{"product_id":"hero-standard-engine-piston-13101aaf00099s","title":"Hero Genuine Standard Engine Piston for HF Deluxe | 13101AAF00099S","description":"\u003ch2\u003eHero Genuine Standard Engine Piston – 13101AAF00099S\u003c\/h2\u003e\n\u003cp\u003eThis listing is for the Hero Genuine \u003cstrong\u003eStandard Engine Piston\u003c\/strong\u003e identified by exact part number \u003cstrong\u003e13101AAF00099S\u003c\/strong\u003e. Select this component by complete part number and chassis\/VIN-based EPC confirmation—not by visual similarity, shared engine capacity or a broad model-family name.\u003c\/p\u003e\n\n\u003ch3\u003eConfirmed Compatibility\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility is limited to the exact EPC-supported applications listed below.\u003c\/strong\u003e Do not assume compatibility with another model, generation or variant merely because the component looks similar or shares an engine family.\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eHero HF Deluxe (Dec 2022)\u003c\/li\u003e\u003c\/ul\u003e\n\n\u003ch3\u003eFitment Note \/ Return Prevention Note\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatch every letter, number and suffix in the SKU.\u003c\/li\u003e\n\u003cli\u003eConfirm the exact motorcycle or scooter model, variant, production generation and applicable EPC assembly.\u003c\/li\u003e\n\u003cli\u003eCompare the old part's side, connector, mounting points, dimensions and surrounding components before opening the package.\u003c\/li\u003e\n\u003cli\u003eDo not install, energise, fill, lubricate, machine or modify the component merely to test compatibility.\u003c\/li\u003e\n\u003cli\u003eInstalled, electrically tested, fuel-exposed, oil-exposed, marked, scratched or modified parts cannot be treated as unused returns.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat This Product Is\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHero Genuine standard-size engine piston\u003c\/li\u003e\n\u003cli\u003eOfficial description: \u003cstrong\u003ePiston\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHero retail part number: \u003cstrong\u003e13101AAF00099S\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCatalogue-format part number: \u003cstrong\u003e13101-AAF-00099\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCommon buyer names: standard piston, engine piston, piston STD and bare piston\u003c\/li\u003e\n\u003cli\u003eEngine location: cylinder bore and crankshaft\/connecting-rod assembly\u003c\/li\u003e\n\u003cli\u003eSize specification: standard \/ STD\u003c\/li\u003e\n\u003cli\u003eCatalogue quantity: one piston per compatible engine\u003c\/li\u003e\n\u003cli\u003eSupply form: one manufacturer-packed bare piston\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hero internal-engine component\u003c\/li\u003e\n\u003cli\u003eStandard-size specification for compatible original-bore applications\u003c\/li\u003e\n\u003cli\u003eDesigned for the matching AAF-series piston ring, pin and cylinder arrangement\u003c\/li\u003e\n\u003cli\u003eTransfers combustion force through the piston pin and connecting rod\u003c\/li\u003e\n\u003cli\u003eMachined ring grooves for the specified matching piston ring set\u003c\/li\u003e\n\u003cli\u003eSuitable replacement when the original matching piston is worn, damaged or outside service limits\u003c\/li\u003e\n\u003cli\u003eExact OEM part-number matching reduces standard-versus-oversize ordering errors\u003c\/li\u003e\n\u003cli\u003eBetter fitment confidence than choosing a piston only by visual appearance\u003c\/li\u003e\n\u003cli\u003eOne bare standard piston supplied\u003c\/li\u003e\n\u003cli\u003eCurrent Hero MRP reference: ₹410 inclusive of taxes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat You Will Receive\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 × Hero Genuine standard-size piston\u003c\/li\u003e\n\u003cli\u003ePart number: \u003cstrong\u003e13101AAF00099S\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOne manufacturer-packed bare piston\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePiston ring set\u003c\/li\u003e\n\u003cli\u003ePiston pin\u003c\/li\u003e\n\u003cli\u003ePiston-pin clips\u003c\/li\u003e\n\u003cli\u003eCylinder block\u003c\/li\u003e\n\u003cli\u003eConnecting rod\u003c\/li\u003e\n\u003cli\u003eCrankshaft assembly\u003c\/li\u003e\n\u003cli\u003eConnecting-rod bearings\u003c\/li\u003e\n\u003cli\u003eTiming sprocket or Woodruff key\u003c\/li\u003e\n\u003cli\u003eCylinder-head gasket\u003c\/li\u003e\n\u003cli\u003eCylinder-base gasket\u003c\/li\u003e\n\u003cli\u003eEngine oil\u003c\/li\u003e\n\u003cli\u003eCylinder honing, boring or machining\u003c\/li\u003e\n\u003cli\u003eInstallation labour\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHero Genuine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHero MotoCorp Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13101AAF00099S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCatalogue Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13101-AAF-00099\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOfficial Description\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommon Buyer Terms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard piston, engine piston, piston STD, bare piston\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize Specification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard \/ STD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCylinder bore and crankshaft\/connecting-rod assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCatalogue Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 piston per compatible engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Retail Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eListed Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e98 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eListed Package Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.5 × 5.5 × 8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMRP Reference\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e₹410 inclusive of taxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRing Set Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston Pin Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston-Pin Clips Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGoogle Shopping MPN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13101AAF00099S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Note\u003c\/h3\u003e\u003cp\u003ePiston replacement requires complete internal-engine dismantling, precision measurement and correct component orientation. Installation should be performed by a trained motorcycle engine technician.\u003c\/p\u003e\n\u003ch4\u003eBefore Installation\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the old and new piston part numbers\u003c\/li\u003e\n\u003cli\u003eConfirm that the engine requires the standard-size piston\u003c\/li\u003e\n\u003cli\u003eMeasure the cylinder bore at the prescribed heights and directions\u003c\/li\u003e\n\u003cli\u003eCheck bore wear, taper, ovality and scoring\u003c\/li\u003e\n\u003cli\u003eMeasure the replacement piston at the specified measuring point\u003c\/li\u003e\n\u003cli\u003eCalculate piston-to-cylinder clearance\u003c\/li\u003e\n\u003cli\u003eInspect and measure the piston ring grooves\u003c\/li\u003e\n\u003cli\u003eCheck the matching ring set and ring end gaps\u003c\/li\u003e\n\u003cli\u003eInspect the piston pin and connecting-rod small end\u003c\/li\u003e\n\u003cli\u003eCheck crankshaft and connecting-rod condition\u003c\/li\u003e\n\u003cli\u003eIdentify the piston’s correct installation direction and markings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDuring Installation\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eUse only the matching standard-size ring set\u003c\/li\u003e\n\u003cli\u003eInstall rings in the correct grooves and orientation\u003c\/li\u003e\n\u003cli\u003eDo not force, hammer or drop the piston\u003c\/li\u003e\n\u003cli\u003eLubricate the piston, pin, rings and cylinder with clean specified engine oil\u003c\/li\u003e\n\u003cli\u003eFit the piston in the correct direction\u003c\/li\u003e\n\u003cli\u003eUse a serviceable or new model-correct piston pin where required\u003c\/li\u003e\n\u003cli\u003eInstall new piston-pin clips according to the service procedure\u003c\/li\u003e\n\u003cli\u003eConfirm each clip is fully seated and correctly oriented\u003c\/li\u003e\n\u003cli\u003eUse a proper ring compressor when inserting the piston into the cylinder\u003c\/li\u003e\n\u003cli\u003eReplace disturbed gaskets and seals\u003c\/li\u003e\n\u003cli\u003eFollow all model-specific tightening sequences and torque values\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAfter Installation\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRotate the engine manually before starting\u003c\/li\u003e\n\u003cli\u003eRefill with the specified engine oil\u003c\/li\u003e\n\u003cli\u003eConfirm adequate lubrication\u003c\/li\u003e\n\u003cli\u003eCheck engine compression\u003c\/li\u003e\n\u003cli\u003eListen for piston slap, knocking or abnormal mechanical noise\u003c\/li\u003e\n\u003cli\u003eCheck for blue smoke and oil leakage\u003c\/li\u003e\n\u003cli\u003eMonitor engine temperature\u003c\/li\u003e\n\u003cli\u003eFollow the technician’s recommended running-in procedure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBuyer-Focused FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow should fitment be confirmed?\u003c\/strong\u003e\u003cbr\u003eMatch the complete part number with the motorcycle's chassis\/VIN-based Hero EPC. A shared model name, appearance or engine capacity is not enough.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the part be installed only to check compatibility?\u003c\/strong\u003e\u003cbr\u003eNo. Confirm the EPC, physical design and related assembly before opening or installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat will be supplied?\u003c\/strong\u003e\u003cbr\u003eOne Hero Genuine component under part number \u003cstrong\u003e13101AAF00099S\u003c\/strong\u003e, subject to the exact contents of the sealed manufacturer package.\u003c\/p\u003e","brand":"Hero MotoCorp","offers":[{"title":"Default Title","offer_id":51785842688295,"sku":"13101AAF00099S","price":410.0,"currency_code":"INR","in_stock":true}],"url":"https:\/\/underthehood.co.in\/products\/hero-standard-engine-piston-13101aaf00099s","provider":"UNDER THE HOOD","version":"1.0","type":"link"}