{"product_id":"royal-enfield-bullet-350-500-cast-iron-rocker-cover-kit-597259","title":"Royal Enfield Bullet 350 \u0026 500 Cast Iron Rocker Cover Kit – 597259 Genuine OEM","description":"\u003ch2\u003eGenuine Royal Enfield Rocker Cover Kit – 597259\u003c\/h2\u003e\n\u003cp\u003eRestore the rocker-cover area of a compatible older Royal Enfield cast-iron (CI) Bullet engine with the original-reference \u003cstrong\u003e597259 Rocker Cover Kit\u003c\/strong\u003e. This is an engine rocker-cover product, not a complete rocker arm assembly, cylinder head, valve kit or a cover for modern UCE\/J-Series engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKnow your engine before ordering:\u003c\/strong\u003e Royal Enfield used different cylinder-head and rocker-cover arrangements across cast-iron, AVL\/lean-burn, UCE and later engines. The motorcycle name alone is not sufficient to identify the correct covers.\u003c\/p\u003e\n\u003ch3\u003ePart identification\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eRoyal Enfield\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOEM kit reference\u003c\/th\u003e\n\u003ctd\u003e597259\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFactory catalogue description\u003c\/th\u003e\n\u003ctd\u003eROCKER COVER KIT \/ ROCKER COVER KIT - CI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBuyer name\u003c\/th\u003e\n\u003ctd\u003eBullet cast-iron engine inlet and exhaust rocker cover kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngine family\u003c\/th\u003e\n\u003ctd\u003eOlder cast-iron (pre-UCE) engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupply unit\u003c\/th\u003e\n\u003ctd\u003eOne kit under OEM reference 597259; verify exact current sealed contents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eWhat is this part used for?\u003c\/h3\u003e\u003cp\u003eRocker covers enclose the upper valve-train rocker mechanism on compatible older Royal Enfield engines. Damage, incorrect surfaces or degraded sealing at these covers may allow oil seepage. Check the actual source of leakage before replacing the covers: the gasket, fixing hardware or nearby engine surfaces may instead be responsible.\u003c\/p\u003e\n\u003ch3\u003eMotorcycle and engine fitment\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMotorcycle \/ engine\u003c\/th\u003e\n\u003cth\u003eFitment guidance\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBullet Standard 350, older cast-iron engine\u003c\/td\u003e\n\u003ctd\u003eSupported by retired-model kit catalogue; match existing inlet\/exhaust rocker cover pattern\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBullet Deluxe 350, older cast-iron engine\u003c\/td\u003e\n\u003ctd\u003eRelated older CI Bullet application; verify OEM assembly before ordering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOlder Bullet 500 cast-iron engine\u003c\/td\u003e\n\u003ctd\u003eSupported by retired-model kit and specialist listings; confirm original cover pattern\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMachismo 350, Electra 4S\/5S, Lightning 500\/535\u003c\/td\u003e\n\u003ctd\u003eConflicting aftermarket fitment claims or model-specific variations. Not confirmed for the complete OEM kit; compare original covers and EPC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThunderbird 350\/500, AVL\/lean-burn engines\u003c\/td\u003e\n\u003ctd\u003eDo not assume compatibility; different cover\/oil circuit configurations may apply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClassic 350\/500 UCE, Bullet UCE, J-Series, LS410, 450 and 650 engines\u003c\/td\u003e\n\u003ctd\u003eNot the intended cast-iron rocker-cover kit; do not order without exact OEM confirmation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eRelated cover references and package-content caution\u003c\/h3\u003e\u003cp\u003eOlder specialist catalogues associate \u003cstrong\u003e140567 (inlet)\u003c\/strong\u003e and \u003cstrong\u003e140568 (exhaust)\u003c\/strong\u003e with a rocker-cover replacement set for reference 597259. Those may appear with revisions such as 140567\/5 or 140568\/3 in historical engine diagrams. These older\/seller references do \u003cstrong\u003enot\u003c\/strong\u003e prove that the current sealed genuine kit contains those exact revisions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat you receive:\u003c\/strong\u003e 1 × genuine Royal Enfield rocker cover kit identified as 597259, subject to the actual sealed pack. The sealed packet has not been inspected here. Do not assume that separate gaskets, studs, washers or nuts are included. Some third-party sellers bundle free gaskets with their own replacement sets; those extras are not confirmed as OEM kit contents.\u003c\/p\u003e\n\u003ch3\u003eNot included or not represented\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eComplete rocker arm shafts, rockers or valve gear\u003c\/li\u003e\n\u003cli\u003eComplete cylinder head, valves, pushrods or tappets\u003c\/li\u003e\n\u003cli\u003eSeparate gasket or fastener pack unless specifically supplied and confirmed\u003c\/li\u003e\n\u003cli\u003eAVL, UCE or J-Series engine conversion components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBefore ordering\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eConfirm that the engine is the older cast-iron type rather than UCE, AVL\/lean-burn or J-Series.\u003c\/li\u003e\n\u003cli\u003eCompare inlet and exhaust cover shapes, oil passage configuration and fixing positions with the existing parts.\u003c\/li\u003e\n\u003cli\u003eMatch the motorcycle VIN\/engine number with the appropriate OEM exploded parts catalogue.\u003c\/li\u003e\n\u003cli\u003eCheck whether you need a complete cover or only the sealing gasket.\u003c\/li\u003e\n\u003cli\u003eFor restoration projects or swapped engines, identify the installed engine rather than relying on the motorcycle registration\/model name.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eInstallation guidance\u003c\/h3\u003e\u003cp\u003eHave a competent Royal Enfield mechanic check the cover mating surfaces, gasket condition, studs and nut condition. Clean the mating surfaces correctly and use only the gasket and tightening specifications appropriate to that engine. Do not overtighten older castings. Torque values are intentionally not provided because the exact engine configuration has not been established.\u003c\/p\u003e\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003ch4\u003eIs 597259 for a Royal Enfield cast-iron engine?\u003c\/h4\u003e\u003cp\u003eYes. The original catalogue calls it a CI rocker cover kit. Confirm the actual engine design before purchase.\u003c\/p\u003e\n\u003ch4\u003eWill this fit my Bullet Standard 350?\u003c\/h4\u003e\u003cp\u003eIt is listed for older cast-iron Bullet Standard 350 applications. Match the rocker cover shape and EPC.\u003c\/p\u003e\n\u003ch4\u003eWill it fit my Bullet 500?\u003c\/h4\u003e\u003cp\u003eOlder cast-iron Bullet 500 applications are supported; verify the engine and cover pattern.\u003c\/p\u003e\n\u003ch4\u003eWill it fit a Classic 350 UCE?\u003c\/h4\u003e\u003cp\u003eNo UCE compatibility is established. The newer UCE rocker\/cylinder-head construction is different.\u003c\/p\u003e\n\u003ch4\u003eCan it fit my Machismo?\u003c\/h4\u003e\u003cp\u003eNot without an individual engine and cover check. Specialist sellers disagree and oil circuit revisions differ.\u003c\/p\u003e\n\u003ch4\u003eIs it suitable for Thunderbird or Electra?\u003c\/h4\u003e\u003cp\u003eDo not assume so. Some older submodels have different rocker cover arrangements. Use VIN\/engine-based EPC matching.\u003c\/p\u003e\n\u003ch4\u003eDoes the kit include both inlet and exhaust covers?\u003c\/h4\u003e\u003cp\u003eSpecialist replacement sets under this reference are described with inlet\/exhaust covers, but the exact current sealed OEM packet contents require inspection.\u003c\/p\u003e\n\u003ch4\u003eDoes it include rocker cover gaskets?\u003c\/h4\u003e\u003cp\u003eNot verified. Aftermarket retailers sometimes add complimentary gaskets; do not assume those are included in genuine sealed 597259.\u003c\/p\u003e\n\u003ch4\u003eDoes it contain rocker arms?\u003c\/h4\u003e\u003cp\u003eNo rocker arm mechanism is established as part of this kit. This is a rocker cover reference.\u003c\/p\u003e\n\u003ch4\u003eDo you provide studs and nuts?\u003c\/h4\u003e\u003cp\u003eThese are not confirmed as part of the OEM retail packet. Check separately before ordering.\u003c\/p\u003e\n\u003ch4\u003eWill replacing the covers cure an oil leak?\u003c\/h4\u003e\u003cp\u003eOnly if the source of the leak involves the covers or their mating surfaces. Gaskets, fasteners and other issues may be responsible.\u003c\/p\u003e\n\u003ch4\u003eHow do I identify the correct kit for a restoration?\u003c\/h4\u003e\u003cp\u003eUse engine type and number, current cover photographs, mounting and oil-circuit details, and the correct period catalogue.\u003c\/p\u003e\n\u003ch3\u003eImportant purchase \/ claims information\u003c\/h3\u003e\u003cp\u003eConfirm the engine type and exact OEM application before purchase. Incorrectly selected spare parts are generally not returnable under store policy. For missing-item, damage or wrong-item claims, preserve a complete unboxing video and contact Under The Hood within 24 hours of delivery. Applicable statutory rights remain unaffected.\u003c\/p\u003e\n\u003ch3\u003eUseful buyer search names\u003c\/h3\u003e\u003cp\u003eRoyal Enfield 597259, Bullet 350 cast iron rocker cover kit, Bullet 500 CI rocker covers, old Bullet inlet exhaust rocker covers, Royal Enfield head rocker cover set, genuine Royal Enfield rocker lid kit.\u003c\/p\u003e","brand":"Royal Enfield","offers":[{"title":"Default Title","offer_id":52487005274407,"sku":"597259","price":0.0,"currency_code":"INR","in_stock":false}],"url":"https:\/\/underthehood.co.in\/products\/royal-enfield-bullet-350-500-cast-iron-rocker-cover-kit-597259","provider":"UNDER THE HOOD","version":"1.0","type":"link"}