{"product_id":"1212603-gear-a-fits-caterpillar-models","title":"1212603 Gear A Fits Caterpillar Models","description":"\u003ch3\u003eOne New Aftermarket Replacement Transmission Input Shaft Gear for Caterpillar (Cat) Construction Equipment\u003c\/h3\u003e\u003cp\u003eThis aftermarket replacement gear is a 24-tooth two wheel drive (2WD) transmission input shaft gear for Caterpillar (Cat) heavy construction equipment. Seated within the transmission assembly, the input shaft gear transfers engine power into the drivetrain and is a critical component for proper gear engagement and power delivery. This part replaces OEM Caterpillar part number 121-2603 (also referenced as 1212603).\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTooth Count: 24 teeth\u003c\/li\u003e\n\u003cli\u003eType: Transmission Input Shaft Gear\u003c\/li\u003e\n\u003cli\u003eDrivetrain: Two Wheel Drive (2WD)\u003c\/li\u003e\n\u003cli\u003eAssembly: Transmission - Drivetrain\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar:\u003c\/strong\u003e Please verify compatibility by serial number with your Cat dealer or parts catalog. This is a 2WD-specific transmission input shaft gear - confirm drivetrain configuration before ordering.\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e121-2603, 1212603\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":42453953445971,"sku":"1212603","price":265.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/1212603_01.jpg?v=1757703030","url":"https:\/\/www.reliableaftermarketparts.ca\/products\/1212603-gear-a-fits-caterpillar-models","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}