{"product_id":"rotax-max-water-pump-gear-19t","title":"9. 635850 Rotax Max Water Pump Gear 19 Tooth","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max Water Pump Gear 19 Tooth\u003c\/strong\u003e (R.635850) is the OEM drive gear mounted on the balance shaft that transmits rotation to the water pump pinion gear (R.234415) on all Rotax 125 MAX EVO engines. This gear drives the water pump at a set ratio relative to engine RPM, ensuring adequate coolant circulation across the full RPM range. A worn or damaged water pump gear causes reduced pump speed, inadequate coolant flow at high RPM, and can ultimately lead to overheating under racing conditions.\u003c\/p\u003e\n\u003cp\u003eCompatible with all Rotax 125 MAX EVO variants: \u003cstrong\u003eRotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/strong\u003e. Works with the 16-tooth pinion gear (R.234415) on the water pump shaft.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.635850\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTeeth:\u003c\/strong\u003e 19T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO, Mini MAX EVO, Micro MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks the water pump gear alongside the pinion gear and full Rotax drivetrain gear set.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48168084963549,"sku":"R.635850","price":27.55,"currency_code":"USD","in_stock":true}],"url":"https:\/\/cmckarting.com\/products\/rotax-max-water-pump-gear-19t","provider":"CMC Karting","version":"1.0","type":"link"}