{"product_id":"harley-x440-starter-solenoid-switch-assembly-hdh35850-raa-001","title":"Harley-Davidson X440 \/ X440 OBDII \/ X440T Starter Solenoid Switch Assembly OEM | HDH35850-RAA-001","description":"\u003cp\u003e\u003cstrong\u003eReplace a weak, faulty, or non-working starter solenoid with this genuine OEM starter solenoid switch assembly for Harley-Davidson X440 series motorcycles.\u003c\/strong\u003e Part number \u003cstrong\u003eHDH35850-RAA-001\u003c\/strong\u003e is the correct OEM replacement for riders searching for the \u003cstrong\u003estarter solenoid\u003c\/strong\u003e, \u003cstrong\u003eself start relay\u003c\/strong\u003e, \u003cstrong\u003estarter relay\u003c\/strong\u003e, or \u003cstrong\u003estarter switch assembly\u003c\/strong\u003e on the listed X440 models.\u003c\/p\u003e\n\n\u003cp\u003eThis part plays an important role in the electric starting system. When the starter solenoid begins to fail, riders may notice symptoms like a click without cranking, intermittent starting, weak starter engagement, or complete no-crank behaviour even when the battery and starter button seem fine. Replacing the correct OEM solenoid helps restore more reliable starter circuit operation.\u003c\/p\u003e\n\n\u003cp\u003eThis page is written in customer-friendly language so buyers can find the part using the terms they naturally search. Instead of relying only on the factory description, it includes common search terms like \u003cstrong\u003estarter solenoid\u003c\/strong\u003e, \u003cstrong\u003estarter relay\u003c\/strong\u003e, and \u003cstrong\u003eself start relay\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eConfirmed fitment:\u003c\/strong\u003e Harley-Davidson \u003cstrong\u003eX440\u003c\/strong\u003e, \u003cstrong\u003eX440 OBDII\u003c\/strong\u003e, and \u003cstrong\u003eX440T\u003c\/strong\u003e. This SKU is \u003cstrong\u003enot confirmed\u003c\/strong\u003e here for X440X or Hero Mavrick 440, so please do not assume it is shared across all 440-family motorcycles.\u003c\/p\u003e\n\n\u003cp\u003eThis listing is for \u003cstrong\u003eone starter solenoid switch assembly only\u003c\/strong\u003e. It is not the starter motor, not the battery, not the starter button, and not a full starting system kit. Please match the old part number and exact requirement before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eGenuine OEM starter solenoid switch assembly\u003c\/li\u003e\n  \u003cli\u003ePart number: HDH35850-RAA-001\u003c\/li\u003e\n  \u003cli\u003eFactory description: SW ASSY START SOLENOID\u003c\/li\u003e\n  \u003cli\u003eBuyer language: starter solenoid, self start relay, starter relay, starter switch assembly\u003c\/li\u003e\n  \u003cli\u003eConfirmed for Harley-Davidson X440, X440 OBDII, and X440T\u003c\/li\u003e\n  \u003cli\u003eUseful for click-no-crank, intermittent start, or weak starter engagement symptoms\u003c\/li\u003e\n  \u003cli\u003eHelps restore reliable electric start circuit operation\u003c\/li\u003e\n  \u003cli\u003eImportant distinction from starter motor and starter button parts\u003c\/li\u003e\n  \u003cli\u003eOEM-style replacement for the listed applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eMake\u003c\/th\u003e\n      \u003cth\u003eModel \/ Variant\u003c\/th\u003e\n      \u003cth\u003ePlatform\u003c\/th\u003e\n      \u003cth\u003eYears (Approx.)\u003c\/th\u003e\n      \u003cth\u003eFitment Status\u003c\/th\u003e\n      \u003cth\u003eNotes\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHarley-Davidson\u003c\/td\u003e\n      \u003ctd\u003eX440\u003c\/td\u003e\n      \u003ctd\u003eHarley X440\u003c\/td\u003e\n      \u003ctd\u003eSept 2023\u003c\/td\u003e\n      \u003ctd\u003eConfirmed\u003c\/td\u003e\n      \u003ctd\u003eConfirmed for the supplied X440 application.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHarley-Davidson\u003c\/td\u003e\n      \u003ctd\u003eX440 OBDII\u003c\/td\u003e\n      \u003ctd\u003eHarley X440\u003c\/td\u003e\n      \u003ctd\u003eMay 2025\u003c\/td\u003e\n      \u003ctd\u003eConfirmed\u003c\/td\u003e\n      \u003ctd\u003eConfirmed for the supplied X440 OBDII application.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHarley-Davidson\u003c\/td\u003e\n      \u003ctd\u003eX440T\u003c\/td\u003e\n      \u003ctd\u003eHarley X440 T\u003c\/td\u003e\n      \u003ctd\u003eJan 2026\u003c\/td\u003e\n      \u003ctd\u003eConfirmed\u003c\/td\u003e\n      \u003ctd\u003eConfirmed for the supplied X440T application.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHarley-Davidson\u003c\/td\u003e\n      \u003ctd\u003eX440X\u003c\/td\u003e\n      \u003ctd\u003eHarley X440 family\u003c\/td\u003e\n      \u003ctd\u003e\u003c\/td\u003e\n      \u003ctd\u003eVerify by VIN \/ EPC \/ old part match\u003c\/td\u003e\n      \u003ctd\u003eNot confirmed for this SKU here.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHero\u003c\/td\u003e\n      \u003ctd\u003eMavrick 440\u003c\/td\u003e\n      \u003ctd\u003eHero 440 platform\u003c\/td\u003e\n      \u003ctd\u003e\u003c\/td\u003e\n      \u003ctd\u003eVerify by VIN \/ EPC \/ old part match\u003c\/td\u003e\n      \u003ctd\u003eNot confirmed for this SKU here.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eVariants\u003c\/h3\u003e\n\u003cp\u003eNone.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x HDH35850-RAA-001 – Starter Solenoid Switch Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation \u0026amp; Maintenance Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePlease match the old part number before ordering.\u003c\/li\u003e\n  \u003cli\u003eThis is the starter solenoid \/ relay unit, not the starter motor.\u003c\/li\u003e\n  \u003cli\u003eInspect battery condition, cable terminals, fuse condition, and starting circuit connections during diagnosis.\u003c\/li\u003e\n  \u003cli\u003eIf the bike has repeated no-crank issues, test the battery and charging condition before replacing electrical parts blindly.\u003c\/li\u003e\n  \u003cli\u003eAfter installation, check terminal tightness and starter function before regular use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBefore You Order\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This listing is for \u003cstrong\u003eone starter solenoid switch assembly\u003c\/strong\u003e. It is not the starter motor, not the starter switch button, and not a complete starting system kit.\u003c\/p\u003e\n\n\u003cp\u003ePlease do not assume all X440-family motorcycles use the same electrical parts. Match your bike model and old part number before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy From Under The Hood\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBuyer-friendly naming built around real search terms\u003c\/li\u003e\n  \u003cli\u003eClear distinction between solenoid, relay, starter motor, and switch parts\u003c\/li\u003e\n  \u003cli\u003eFitment kept conservative to reduce costly wrong orders\u003c\/li\u003e\n  \u003cli\u003eUseful for customers solving starting issues with the correct OEM part\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1. What is HDH35850-RAA-001?\u003c\/strong\u003e\u003cbr\u003e\nIt is the OEM starter solenoid switch assembly for the listed Harley-Davidson X440 applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e2. Which bikes is this confirmed for?\u003c\/strong\u003e\u003cbr\u003e\nIt is confirmed for \u003cstrong\u003eHarley-Davidson X440\u003c\/strong\u003e, \u003cstrong\u003eX440 OBDII\u003c\/strong\u003e, and \u003cstrong\u003eX440T\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e3. Is this the starter motor?\u003c\/strong\u003e\u003cbr\u003e\nNo. This listing is for the \u003cstrong\u003estarter solenoid \/ relay assembly\u003c\/strong\u003e, not the starter motor.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e4. Is this the same as a self start relay?\u003c\/strong\u003e\u003cbr\u003e\nYes. Buyers commonly search this part as a \u003cstrong\u003eself start relay\u003c\/strong\u003e, \u003cstrong\u003estarter relay\u003c\/strong\u003e, or \u003cstrong\u003estarter solenoid\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e5. Will it fit X440X or Hero Mavrick 440?\u003c\/strong\u003e\u003cbr\u003e\nThose applications are not confirmed here for this SKU. Please verify by VIN \/ EPC \/ old part match before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e6. When should a starter solenoid be replaced?\u003c\/strong\u003e\u003cbr\u003e\nReplace it when it is faulty and causing click-no-crank behaviour, intermittent starting, or failed starter engagement after proper diagnosis.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e7. What should be checked before ordering?\u003c\/strong\u003e\u003cbr\u003e\nConfirm the bike model, old part number, and diagnose the battery and start circuit properly before purchase.\u003c\/p\u003e","brand":"Harley-Davidson","offers":[{"title":"Default Title","offer_id":51324521218343,"sku":"HDH35850-RAA-001","price":420.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/C527CB2A-7362-4029-AB24-52D2F33D13B9.jpg?v=1777063280","url":"https:\/\/underthehood.co.in\/products\/harley-x440-starter-solenoid-switch-assembly-hdh35850-raa-001","provider":"UNDER THE HOOD","version":"1.0","type":"link"}