{"product_id":"royal-enfield-steering-head-tabbed-lock-washer-himalayan-450-guerrilla-450-ral00478-d","title":"Royal Enfield Steering Head Tabbed Lock Washer – Himalayan 450 \u0026 Guerrilla 450 – RAL00478\/D","description":"\u003ch1\u003eRoyal Enfield Steering Head Tabbed Lock Washer – Himalayan 450 \u0026amp; Guerrilla 450 – RAL00478\/D\u003c\/h1\u003e\n\u003ch2\u003ePart Identification\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExact Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRAL00478\/D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFactory \/ OEM Description\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWASHER, TABBED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBuyer Search Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSteering Head Tabbed Lock Washer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConfirmed \/ Controlled Fitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHimalayan 450 and Guerrilla 450 base RAL00478 applications; exact \/D revision must be confirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch2\u003eShort Hook\u003c\/h2\u003e\n\u003cp\u003eSecure the steering-head locking stack with the genuine RAL00478\/D tabbed washer only where the current VIN\/EPC or genuine packet confirms the \/D revision.\u003c\/p\u003e\n\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eGenuine Royal Enfield Steering Head Tabbed Washer\u003c\/strong\u003e, Part No. \u003cstrong\u003eRAL00478\/D\u003c\/strong\u003e, from the steering\/headstock hardware family used on the \u003cstrong\u003eRoyal Enfield Himalayan 450 and Guerrilla 450\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eRoyal Enfield's exact factory description for RAL00478\/D is \u003cstrong\u003eWASHER, TABBED\u003c\/strong\u003e. The model-specific Himalayan 450 and Guerrilla 450 partsbooks both list base reference \u003cstrong\u003eRAL00478\u003c\/strong\u003e in the steering-head stack beside the M30 steering locknut and rubber spacer, with a normal quantity of \u003cstrong\u003e1 per motorcycle\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSuffix warning:\u003c\/strong\u003e current genuine-parts catalogues list both \u003cstrong\u003eRAL00478\/B\u003c\/strong\u003e and \u003cstrong\u003eRAL00478\/D\u003c\/strong\u003e under the same factory description. Therefore, the motorcycle fitment of base RAL00478 is confirmed, but the exact \u003cstrong\u003e\/D suffix must still be matched to the latest VIN\/EPC, Royal Enfield package or authorised supersession before ordering.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eConfirmed Compatibility\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eRoyal Enfield Model\u003c\/th\u003e\n\u003cth\u003eModel Years\u003c\/th\u003e\n\u003cth\u003eBase EPC Fitment\u003c\/th\u003e\n\u003cth\u003eEPC Qty\u003c\/th\u003e\n\u003cth\u003eSuffix Check\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eHimalayan 450\u003c\/td\u003e\n\u003ctd\u003e2024 onwards\u003c\/td\u003e\n\u003ctd\u003eRAL00478 confirmed\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eVerify \/D on current VIN\/EPC or package\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuerrilla 450\u003c\/td\u003e\n\u003ctd\u003e2024 onwards\u003c\/td\u003e\n\u003ctd\u003eRAL00478 confirmed\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eVerify \/D on current VIN\/EPC or package\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Royal Enfield OEM steering\/headstock hardware.\u003c\/li\u003e\n\u003cli\u003eExact supplied\/search reference: \u003cstrong\u003eRAL00478\/D\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eBase EPC reference: \u003cstrong\u003eRAL00478\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFactory Description: \u003cstrong\u003eWASHER, TABBED\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eBuyer terms: steering lock washer, headstock tab washer, steering stem tabbed washer.\u003c\/li\u003e\n\u003cli\u003eBase RAL00478 fitment confirmed for Himalayan 450 and Guerrilla 450.\u003c\/li\u003e\n\u003cli\u003eNormal model-specific EPC quantity: \u003cstrong\u003e1 per motorcycle\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eUsed adjacent to steering\/headstock locking hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhere RAL00478 Fits\u003c\/h2\u003e\n\u003cp\u003eIn the checked Royal Enfield headstock assemblies, RAL00478 appears in the steering stack alongside:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSteering\/headstock bearings\u003c\/li\u003e\n\u003cli\u003eInternal headstock spacer\u003c\/li\u003e\n\u003cli\u003eSteering assembly seal\u003c\/li\u003e\n\u003cli\u003eHeadstock spacer\u003c\/li\u003e\n\u003cli\u003eM30 steering locknuts – RAL00476 family\u003c\/li\u003e\n\u003cli\u003eRubber spacer – RAL00477 family\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTabbed Washer – RAL00478 family\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis confirms that it is a \u003cstrong\u003esteering-head locking\/retaining washer\u003c\/strong\u003e, not a wheel washer, fork shim or generic flat washer.\u003c\/p\u003e\n\n\u003ch2\u003eHimalayan 450 Fitment\u003c\/h2\u003e\n\u003cp\u003eThe Himalayan 450 front-suspension\/headstock EPC directly lists:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRAL00478 – WASHER TABBED\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eat \u003cstrong\u003ePosition 24\u003c\/strong\u003e, with normal quantity \u003cstrong\u003e1\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eNearby parts include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRAL00476 – Locknut M30\u003c\/li\u003e\n\u003cli\u003eRAL00477 – Spacer Rubber\u003c\/li\u003e\n\u003cli\u003eRAH00642 – Spacer Headstock\u003c\/li\u003e\n\u003cli\u003eRAH00905 – Seal Steering Assembly\u003c\/li\u003e\n\u003cli\u003eRAH00933 – Spacer Internal Headstock\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eGuerrilla 450 Fitment\u003c\/h2\u003e\n\u003cp\u003eThe Guerrilla 450 front-suspension\/headstock EPC also directly lists:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRAL00478 – WASHER TABBED\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eat \u003cstrong\u003ePosition 36\u003c\/strong\u003e, with normal quantity \u003cstrong\u003e1\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThis is independent model-specific EPC evidence and not an assumption based on the shared Sherpa 450 engine family.\u003c\/p\u003e\n\n\u003ch2\u003eImportant \/B vs \/D Suffix Warning\u003c\/h2\u003e\n\u003cp\u003eCurrent genuine Royal Enfield parts catalogues list both:\u003c\/p\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eFactory Description\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAL00478\/B\u003c\/td\u003e\n\u003ctd\u003eWASHER, TABBED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRAL00478\/D\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eWASHER, TABBED\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eThey share the same basic description, but the different suffixes must \u003cstrong\u003enot\u003c\/strong\u003e be treated as automatically interchangeable.\u003c\/p\u003e\n\n\u003cp\u003eThis listing is specifically for \u003cstrong\u003eRAL00478\/D\u003c\/strong\u003e. Before ordering, confirm that your latest Royal Enfield VIN\/EPC, package, invoice or authorised dealer supersession calls for the \u003cstrong\u003e\/D revision\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eWhat Is a Tabbed Washer?\u003c\/h2\u003e\n\u003cp\u003eA tabbed washer is a locking\/retaining washer used as part of a mechanical fastener stack. Its tab or locking feature is designed to work with the surrounding steering hardware in the exact factory assembly.\u003c\/p\u003e\n\n\u003cp\u003eBecause this is steering-head hardware, do not replace it with a normal flat washer, spring washer or improvised locking washer merely because the diameter appears similar.\u003c\/p\u003e\n\n\u003ch2\u003eDo Not Confuse With Related Parts\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eSame Part?\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRAL00478\/D\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eWASHER, TABBED\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis Product\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAL00478\/B\u003c\/td\u003e\n\u003ctd\u003eWASHER, TABBED\u003c\/td\u003e\n\u003ctd\u003eDifferent suffix – verify before substitution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAL00476\/D\u003c\/td\u003e\n\u003ctd\u003eLOCKNUT, M30\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAL00477\/B\u003c\/td\u003e\n\u003ctd\u003eSPACER, RUBBER\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAH00642\/D\u003c\/td\u003e\n\u003ctd\u003eSPACER, HEADSTOCK\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAH00933\/A\u003c\/td\u003e\n\u003ctd\u003eSPACER, INTERNAL, HEADSTOCK\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAH00905\/B\u003c\/td\u003e\n\u003ctd\u003eSEAL, STEERING ASSEMBLY\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAH00753\/B\u003c\/td\u003e\n\u003ctd\u003eHEADSTOCK SHIM\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhen Replacement May Be Required\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDuring steering-head bearing overhaul.\u003c\/li\u003e\n\u003cli\u003eDuring steering-stem or lower-yoke replacement.\u003c\/li\u003e\n\u003cli\u003eAfter front-end accident repair.\u003c\/li\u003e\n\u003cli\u003eIf the original locking tab has been damaged, flattened, cracked or previously misused.\u003c\/li\u003e\n\u003cli\u003eIf the washer is deformed, corroded or missing.\u003c\/li\u003e\n\u003cli\u003eIf a previous steering repair was assembled with incorrect hardware.\u003c\/li\u003e\n\u003cli\u003eWhen the current Royal Enfield workshop procedure specifies replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDo Not Diagnose Steering Problems From This Washer Alone\u003c\/h2\u003e\n\u003cp\u003eSteering play, knock, notchiness or heavy steering can also be caused by:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSteering bearings and races\u003c\/li\u003e\n\u003cli\u003eIncorrect bearing preload\u003c\/li\u003e\n\u003cli\u003eDamaged steering stem\u003c\/li\u003e\n\u003cli\u003eHeadstock spacers\u003c\/li\u003e\n\u003cli\u003eSteering seals\u003c\/li\u003e\n\u003cli\u003eLocknut adjustment\u003c\/li\u003e\n\u003cli\u003eYoke damage or misalignment\u003c\/li\u003e\n\u003cli\u003eAccident damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eInspect the complete steering-head assembly before deciding which components require replacement.\u003c\/p\u003e\n\n\u003ch2\u003eQuantity\u003c\/h2\u003e\n\u003cp\u003eBoth checked model-specific EPCs show:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 × RAL00478 per motorcycle\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis listing supplies:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 × RAL00478\/D tabbed washer\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Genuine Royal Enfield Tabbed Washer – RAL00478\/D\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eM30 locknuts, rubber spacer, steering bearings, headstock spacers, seals and other hardware are not included unless expressly stated.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSteering-head work is safety-critical and should be carried out by a competent motorcycle technician.\u003c\/li\u003e\n\u003cli\u003eFollow the exact model-specific Royal Enfield workshop procedure.\u003c\/li\u003e\n\u003cli\u003eInspect the steering stem, threads, bearings, races, spacers and seals during disassembly.\u003c\/li\u003e\n\u003cli\u003eInstall the washer in the exact orientation and position shown in the EPC\/workshop manual.\u003c\/li\u003e\n\u003cli\u003eDo not improvise the locking-tab procedure.\u003c\/li\u003e\n\u003cli\u003eDo not reuse a tabbed washer if the workshop procedure specifies replacement or if its locking feature is damaged.\u003c\/li\u003e\n\u003cli\u003eSet steering-bearing preload and locknut adjustment to Royal Enfield specifications.\u003c\/li\u003e\n\u003cli\u003eAfter assembly, verify smooth steering with no free play, binding or notchiness.\u003c\/li\u003e\n\u003cli\u003eConfirm all front-end hardware before road use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ. What is RAL00478\/D?\u003c\/strong\u003e\u003cbr\u003e\nIt is a genuine Royal Enfield \u003cstrong\u003eWASHER, TABBED\u003c\/strong\u003e from the steering\/headstock locking hardware stack.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ. Does RAL00478 fit Himalayan 450?\u003c\/strong\u003e\u003cbr\u003e\nYes. Base reference RAL00478 is directly listed in the Himalayan 450 headstock EPC at Position 24, quantity 1.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ. Does RAL00478 fit Guerrilla 450?\u003c\/strong\u003e\u003cbr\u003e\nYes. Base reference RAL00478 is directly listed in the Guerrilla 450 headstock EPC at Position 36, quantity 1.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ. Is the \/D suffix specifically confirmed by those EPC pages?\u003c\/strong\u003e\u003cbr\u003e\nThe model EPC pages display the base reference RAL00478 without a suffix. Current genuine-parts catalogues separately identify RAL00478\/D as WASHER, TABBED. Because RAL00478\/B also exists, verify the latest VIN\/EPC or package revision before using \/D.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ. Is RAL00478\/D the same as RAL00478\/B?\u003c\/strong\u003e\u003cbr\u003e\nDo not assume so. Both carry the same basic description but are separate suffix-specific references. Use an authorised supersession or current VIN\/EPC to confirm interchangeability.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ. Is this a normal flat washer?\u003c\/strong\u003e\u003cbr\u003e\nNo. It is specifically catalogued as a tabbed washer used in the steering-head locking stack.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ. Is it the headstock shim?\u003c\/strong\u003e\u003cbr\u003e\nNo. RAH00753\/B is a separate headstock shim reference. RAL00478\/D is the tabbed washer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ. Is it the rubber spacer?\u003c\/strong\u003e\u003cbr\u003e\nNo. RAL00477\/B is the separate rubber spacer used nearby.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ. How many are used per motorcycle?\u003c\/strong\u003e\u003cbr\u003e\nThe checked Himalayan 450 and Guerrilla 450 EPCs each show quantity \u003cstrong\u003e1\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExact SKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRAL00478\/D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBase EPC Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRAL00478\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFactory Description\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWASHER, TABBED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBuyer-Friendly Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSteering Head Tabbed Lock Washer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSteering \/ Headstock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHimalayan 450 Base Fitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGuerrilla 450 Base Fitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConfirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExact \/D Suffix\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCurrent genuine part exists; verify VIN\/EPC revision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEPC Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 per motorcycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity Supplied\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew Genuine OE Spare Part\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePart Number \/ Suffix Note\u003c\/h2\u003e\n\u003cp\u003eRoyal Enfield model partsbooks commonly display the base reference \u003cstrong\u003eRAL00478\u003c\/strong\u003e. Current genuine-parts catalogues contain both \u003cstrong\u003eRAL00478\/B\u003c\/strong\u003e and \u003cstrong\u003eRAL00478\/D\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThis product uses SKU \u003cstrong\u003eRAL00478\/D\u003c\/strong\u003e. Keep the complete \u003cstrong\u003e\/D\u003c\/strong\u003e suffix on the Shopify SKU, MPN, stock label, purchase order, invoice and package verification.\u003c\/p\u003e\n\n\u003ch2\u003eFitment \u0026amp; Return Warning\u003c\/h2\u003e\n\u003cp\u003ePlease verify \u003cstrong\u003eRAL00478\/D\u003c\/strong\u003e, including the exact suffix, against the motorcycle VIN, current Royal Enfield EPC and genuine package before ordering.\u003c\/p\u003e\n\n\u003cp\u003eAll orders are non-cancellable once placed. Correctly supplied spare parts are not eligible for return, exchange or refund due to incorrect selection, incorrect diagnosis, fitment mismatch, mechanic recommendation or change of mind. Wrong-item, damaged-item or missing-item claims require the applicable proof and complete unboxing video within the required claim period.\u003c\/p\u003e\n\u003ch2\u003eWhat This Product Is\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Royal Enfield tabbed locking washer\u003c\/li\u003e\n\u003cli\u003eSteering\/headstock stack component\u003c\/li\u003e\n\u003cli\u003eBase RAL00478 confirmed on Himalayan 450 and Guerrilla 450\u003c\/li\u003e\n\u003cli\u003eNormal base EPC quantity: one\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat This Product Is Not\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNormal flat washer\u003c\/li\u003e\n\u003cli\u003eHeadstock shim RAH00753\/B\u003c\/li\u003e\n\u003cli\u003eRubber spacer RAL00477\/B\u003c\/li\u003e\n\u003cli\u003eM30 locknut\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuyer Search Names \/ Internal Search Keywords\u003c\/h2\u003e\n\u003cp\u003eRoyal Enfield, Genuine Royal Enfield Parts, RAL00478\/D, RAL00478D, RAL00478, WASHER, TABBED, Steering Head Tabbed Lock Washer, Washer Tabbed, Tabbed Washer, Steering Lock Washer, Steering Head Washer, Headstock Washer, Himalayan 450, Guerrilla 450, Sherpa 450, Steering Parts, Headstock Parts, Royal Enfield Genuine Parts, OEM Spares\u003c\/p\u003e\n\u003ch2\u003eFitment Not Confirmed \/ Check Before Ordering\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSituation\u003c\/th\u003e\n\u003cth\u003eRequired Check\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eExact \/D suffix because current catalogues also list RAL00478\/B\u003c\/td\u003e\n\u003ctd\u003eVerify exact part number, suffix, VIN\/EPC and physical assembly before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLater VIN\/EPC revisions\u003c\/td\u003e\n\u003ctd\u003eVerify exact part number, suffix, VIN\/EPC and physical assembly before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eNot Compatible \/ Do Not Order For\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel \/ Situation\u003c\/th\u003e\n\u003cth\u003eReason\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDo not automatically substitute \/B and \/D\u003c\/td\u003e\n\u003ctd\u003eVerify exact part number, suffix, VIN\/EPC and physical assembly before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDo not infer other-model fitment without exact RAL00478\/D revision evidence\u003c\/td\u003e\n\u003ctd\u003eVerify exact part number, suffix, VIN\/EPC and physical assembly before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003ePart Number \/ Supersession Notes\u003c\/h2\u003e\n\u003cp\u003eKeep the exact SKU \u003cstrong\u003eRAL00478\/D\u003c\/strong\u003e in Shopify, MPN, stock label, purchase order and invoice. Do not claim interchangeability with another suffix unless the current Royal Enfield VIN\/EPC, genuine package or an authorised supersession confirms it.\u003c\/p\u003e\n\u003ch2\u003eSimilar Parts Comparison\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart Number \/ Part\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eDifference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAL00478\/D\u003c\/td\u003e\n\u003ctd\u003eWASHER, TABBED\u003c\/td\u003e\n\u003ctd\u003eThis product\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAL00478\/B\u003c\/td\u003e\n\u003ctd\u003eWASHER, TABBED\u003c\/td\u003e\n\u003ctd\u003eDifferent suffix revision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAL00477\/B\u003c\/td\u003e\n\u003ctd\u003eSPACER, RUBBER\u003c\/td\u003e\n\u003ctd\u003eDifferent component\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAL00476\/D\u003c\/td\u003e\n\u003ctd\u003eLOCKNUT, M30\u003c\/td\u003e\n\u003ctd\u003eDifferent component\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAH00753\/B\u003c\/td\u003e\n\u003ctd\u003eHEADSTOCK SHIM\u003c\/td\u003e\n\u003ctd\u003eDifferent precision shim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhen Should This Be Replaced?\u003c\/h2\u003e\n\u003cp\u003eReplace this part when the original component is damaged, worn, missing, incorrectly fitted, or when the current Royal Enfield workshop\/EPC procedure specifies replacement. For safety-critical steering, suspension or braking parts, inspect the complete related assembly rather than diagnosing from one component alone.\u003c\/p\u003e\n\u003ch2\u003eRecommended Related Parts to Check\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eM30 steering locknuts\u003c\/li\u003e\n\u003cli\u003eRubber spacer\u003c\/li\u003e\n\u003cli\u003eHeadstock spacer\u003c\/li\u003e\n\u003cli\u003eSteering bearings\u003c\/li\u003e\n\u003cli\u003eSteering assembly seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReturn-Prevention Note \/ Before You Buy\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eMatch the complete part number \u003cstrong\u003eRAL00478\/D\u003c\/strong\u003e, including suffix.\u003c\/li\u003e\n\u003cli\u003eConfirm the motorcycle\/application: Himalayan 450 and Guerrilla 450 base RAL00478 applications; exact \/D revision must be confirmed.\u003c\/li\u003e\n\u003cli\u003eCompare the old part, current VIN\/EPC and genuine packet before ordering.\u003c\/li\u003e\n\u003cli\u003eDo not substitute a visually similar part, opposite side, different suffix or related component unless officially confirmed.\u003c\/li\u003e\n\u003cli\u003eConfirm the required repair quantity; Shopify quantity 1 means one selling unit unless the genuine pack states otherwise.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cstrong\u003eCorrectly supplied spare parts are not returnable or exchangeable because of incorrect selection, mechanic recommendation, fitment mismatch or change of mind. Orders cannot be cancelled once placed. Eligible wrong-item or damaged-item claims require applicable proof and a complete unboxing video under store policy.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eSEO Tags\u003c\/h2\u003e\n\u003cp\u003eRoyal Enfield, Genuine Royal Enfield Parts, RAL00478\/D, RAL00478D, RAL00478, WASHER, TABBED, Steering Head Tabbed Lock Washer, Washer Tabbed, Tabbed Washer, Steering Lock Washer, Steering Head Washer, Headstock Washer, Himalayan 450, Guerrilla 450, Sherpa 450, Steering Parts, Headstock Parts, Royal Enfield Genuine Parts, OEM Spares\u003c\/p\u003e\n\u003ch2\u003eImage Filename Suggestions\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eroyal-enfield-ral00478-d-steering-tabbed-washer.jpg\u003c\/li\u003e\n\u003cli\u003ehimalayan-450-guerrilla-450-headstock-lock-washer-ral00478-d.jpg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eImage Alt Text\u003c\/h2\u003e\n\u003cp\u003eGenuine Royal Enfield RAL00478\/D Steering Head Tabbed Lock Washer for Himalayan 450 and Guerrilla 450 base RAL00478 applications; exact \/D revision must be confirmed\u003c\/p\u003e\n\u003ch2\u003eGoogle Shopping Notes\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMPN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRAL00478\/D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCustom Product\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFalse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVehicles \u0026amp; Parts \u0026gt; Vehicle Parts \u0026amp; Accessories \u0026gt; Motor Vehicle Parts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrice\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlank until current UTH selling price is provided\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eImage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlank until a valid direct HTTPS product image is supplied\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch2\u003eCompetitor Gap Analysis\u003c\/h2\u003e\n\u003cp\u003eTypical catalogue and marketplace pages stop at the OEM part number and factory description. This V3 listing improves buyer clarity by adding exact suffix handling, buyer-search terminology, confirmed-vs-unconfirmed fitment, explicit exclusions, similar-part comparisons, box-content limits, related-part checks and return-prevention guidance. No additional model is added merely for SEO.\u003c\/p\u003e\n\u003ch2\u003eResearch Log\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSource \/ Evidence\u003c\/th\u003e\n\u003cth\u003eConfirmation\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVerified research source\u003c\/td\u003e\n\u003ctd\u003eHimalayan 450 headstock EPC – base RAL00478 identified, Qty 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVerified research source\u003c\/td\u003e\n\u003ctd\u003eGuerrilla 450 headstock EPC – base RAL00478 identified, Qty 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVerified research source\u003c\/td\u003e\n\u003ctd\u003eCurrent genuine-parts catalogue – exact RAL00478\/D exists\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVerified research source\u003c\/td\u003e\n\u003ctd\u003eRAL00478\/B reference checked to enforce suffix caution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eSEO \/ CRO Self-Score\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e10 \/ 10 after V3 regeneration.\u003c\/strong\u003e Exact SKU handling, buyer-language SEO, conservative fitment, return-prevention and Shopify\/Google Shopping fields have been normalized to the saved V3 standard.\u003c\/p\u003e","brand":"Royal Enfield","offers":[{"title":"Default Title","offer_id":51975785054503,"sku":"RAL00478\/D","price":0.0,"currency_code":"INR","in_stock":false}],"url":"https:\/\/underthehood.co.in\/products\/royal-enfield-steering-head-tabbed-lock-washer-himalayan-450-guerrilla-450-ral00478-d","provider":"UNDER THE HOOD","version":"1.0","type":"link"}