{"product_id":"a-b144s9770033g1-ai-model-44-ztr-repower-25hp","title":"A-B144S9770033G1-AI MODEL 44 ZTR REPOWER-25HP","description":"\u003ch3\u003eOne New Aftermarket Replacement Fits Briggs \u0026amp; Fits Stratton Professional Series 25 HP Vertical Shaft Engine (Model 44 ZTR Repower)\u003c\/h3\u003e\u003cp\u003eThis Fits Briggs \u0026amp; Fits Stratton (B\u0026amp;S) Professional Series 44S977-0033-G1 is a 25 gross HP V-Twin vertical shaft engine designed as a direct repower replacement for zero-turn riders (ZTR) and lawn\/garden tractors. The Model 44 ZTR Repower package replaces worn or failed engines with a modern OHV twin-cylinder unit featuring a Dura-Bore cast iron cylinder sleeve for extended service life and full-pressure lubrication with a spin-on oil filter.\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e  \u003cli\u003eEngine Series: Fits Briggs \u0026amp; Fits Stratton Professional Series V-Twin OHV\u003c\/li\u003e  \u003cli\u003ePower: 25 Gross HP (SAE J1995)\u003c\/li\u003e  \u003cli\u003eDisplacement: 724cc\u003c\/li\u003e  \u003cli\u003eBore x Stroke: 3.12 in x 2.89 in\u003c\/li\u003e  \u003cli\u003eCrankshaft: 1-1\/8 in x 4-19\/64 in, Tapped 7\/16-20, 1\/4 in Straight Keyway\u003c\/li\u003e  \u003cli\u003eValve Train: Overhead Valve (OHV)\u003c\/li\u003e  \u003cli\u003eCylinder Sleeve: Dura-Bore cast iron\u003c\/li\u003e  \u003cli\u003eStarter: 12-Volt Electric Start\u003c\/li\u003e  \u003cli\u003eAlternator: 16 Amp DC\u003c\/li\u003e  \u003cli\u003eCarburetor: Float-feed type with integral fuel pump\u003c\/li\u003e  \u003cli\u003eAir Filtration: Dual-Clean cartridge with foam pre-cleaner\u003c\/li\u003e  \u003cli\u003eIgnition: Maintenance-free Magnetron electronic ignition\u003c\/li\u003e  \u003cli\u003eLubrication: Full-pressure with spin-on oil filter\u003c\/li\u003e  \u003cli\u003eOil Capacity: 2.0 qt (1.9 L)\u003c\/li\u003e  \u003cli\u003eRecommended Oil: Synthetic 5W-30 or 10W-30\u003c\/li\u003e  \u003cli\u003eShaft Orientation: Vertical\u003c\/li\u003e  \u003cli\u003eMounting: Vertical\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatible Applications\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eZero-Turn Riders (ZTR) and Lawn\/Garden Tractors:\u003c\/strong\u003e This engine is specifically designed as a Model 44 ZTR repower replacement for zero-turn mowers and riding tractors requiring a vertical-shaft V-Twin engine with a 1-1\/8 in crankshaft. Verify crankshaft dimensions and mounting pattern before ordering.\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e44S977-0033-G1, 44S9770033G1, B144S9770033G1-AI\u003c\/p\u003e\u003ch4\u003eSupersedes \/ Interchange\u003c\/h4\u003e\u003cp\u003eSupersedes earlier Fits Briggs \u0026amp; Fits Stratton models including: 40H777-0124-G1, 40H777-0241-E1, 445677-0476-E1. Earlier type numbers 44S977-0014-G1 and 44S977-0015-G1 were superseded to this series.\u003c\/p\u003e\u003cp\u003eNew aftermarket replacement part - not remanufactured, not used.\u003c\/p\u003e","brand":"Reliable Aftermarket Parts, Inc® -OD","offers":[{"title":"Default Title","offer_id":40529975672915,"sku":"A-B144S9770033G1-AI","price":2478.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/RAP_ComingSoon_Tractor_9b39084a-4637-4c20-9305-d37807983941.jpg?v=1757879528","url":"https:\/\/www.reliableaftermarketparts.ca\/products\/a-b144s9770033g1-ai-model-44-ztr-repower-25hp","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}