{"product_id":"water-pump-impeller-for-tohatsu-60-70-90-115-140-outboards-replaces-3c7650211m-sierra-18-8924","title":"Sierra Impeller 18-8924, Replaces 3C7650211M, Fits Tohatsu 60\/70 3-Cyl, MD 70, MD 90 TLDI, 115, 140 HP","description":"\u003cp\u003eThe Sierra 18-8924 is a replacement water pump impeller engineered for Tohatsu outboard engines that rely on a rubber-vaned impeller to circulate raw cooling water through the powerhead. As the wear component inside the lower unit's water pump housing, the impeller's flexible vanes draw water in and push it up through the cooling passages; over time heat, running dry, and age cause the vanes to harden, crack, or lose their seal, which leads to overheating alarms and reduced water flow at the tell-tale. Replacing a worn impeller on schedule protects the powerhead from heat damage and restores proper cooling pressure. Sierra manufactures this impeller to meet or exceed the specifications of the original equipment part it replaces, and it is built for direct fitment on the applicable Tohatsu engine families without modification. This part is commonly serviced together with the water pump housing, wear plate, and gasket kit during a routine water pump overhaul. Refer to the fitment and cross-reference details below to confirm this is the correct impeller for your engine before ordering.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-8924\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 2.7 x 2.4 x 2.2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.27 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282265793\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 3C7650211M, 3B7650212M\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTohatsu 60 3-cyl (B \u0026amp; C models)\u003c\/li\u003e\n\u003cli\u003eTohatsu 70 3-cyl (B \u0026amp; C models)\u003c\/li\u003e\n\u003cli\u003eTohatsu MD 70\u003c\/li\u003e\n\u003cli\u003eTohatsu MD 90 (TLDI)\u003c\/li\u003e\n\u003cli\u003eTohatsu 115\u003c\/li\u003e\n\u003cli\u003eTohatsu 140\u003c\/li\u003e\n\u003cli\u003eTohatsu 90 2-Stroke\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e3C7650211M\u003c\/li\u003e\n\u003cli\u003e3B7650212M\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-8924 replace?\u003c\/strong\u003e The Sierra 18-8924 impeller is a direct cross-reference for OEM part numbers 3C7650211M and 3B7650212M.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich Tohatsu engines fit this impeller?\u003c\/strong\u003e This impeller fits Tohatsu 60 3-cyl (B \u0026amp; C models), 70 3-cyl (B \u0026amp; C models), MD 70, MD 90 (TLDI), 115, 140, and 90 2-Stroke engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-8924 a genuine OEM part or aftermarket?\u003c\/strong\u003e The 18-8924 is a Sierra-manufactured aftermarket impeller built to meet or exceed the specifications of the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this impeller?\u003c\/strong\u003e The Sierra 18-8924 measures 2.7 x 2.4 x 2.2 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-8924 impeller weigh?\u003c\/strong\u003e It weighs 0.27 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my old impeller needs replacing?\u003c\/strong\u003e Signs that the 18-8924 or any water pump impeller needs replacing include reduced water flow at the tell-tale stream, overheating alarms, and visibly cracked, curled, or stiff rubber vanes when the old impeller is removed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-8924 come with a housing or gasket?\u003c\/strong\u003e The 18-8924 is the impeller only; it does not include the water pump housing, wear plate, or gasket, which are sold separately for a full water pump rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this impeller fit a Tohatsu MD 90 TLDI?\u003c\/strong\u003e Yes, the Sierra 18-8924 is listed to fit the Tohatsu MD 90 (TLDI) engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there a warranty on the 18-8924 impeller?\u003c\/strong\u003e Sierra parts, including the 18-8924, are covered under Sierra's standard customer satisfaction warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the impeller made of?\u003c\/strong\u003e The 18-8924 is a rubber-vaned water pump impeller designed to seal and pump cooling water through the Tohatsu engines it fits.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988435972315,"sku":"SIE-18-8924","price":35.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-8924_lg__43156.1558132584.500.750.jpg?v=1785188325","url":"https:\/\/www.goodvibesmarina.com\/products\/water-pump-impeller-for-tohatsu-60-70-90-115-140-outboards-replaces-3c7650211m-sierra-18-8924","provider":"Good Vibes Marina","version":"1.0","type":"link"}