{"product_id":"sierra-18-3570-water-pump-kit-for-mercury-outboards-replaces-mercury-817275a2-817275a1-impeller-housing-face-seal-plate","title":"Sierra 18-3570 Water Pump Kit - Replaces Mercury Marine 817275A1, 817275A2 - Fits MerCruiser Alpha I Generation II \u0026 Vazer","description":"\u003cp\u003eThe Sierra 18-3570 Water Pump Kit is a complete rebuild kit for MerCruiser Alpha I Generation II and Vazer outdrives, serial number 0D494569 and above. Rather than sourcing individual water pump components separately, the kit bundles every part needed for a full water pump service into a single part number: a face seal and installation tool, impeller, impeller plate, O-ring, and the full set of gaskets required for reassembly, including the seal ring gasket, drain screw gasket, water pump gasket, and cover gasket. This kit cross-references to the Mercury Marine 817275A1 and 817275A2 water pump assembly, making it a direct match for boaters replacing a worn or failing pump on covered Alpha I Generation II and Vazer drives.\u003c\/p\u003e\u003cp\u003eThe impeller included in the kit is the Sierra 18-3056, engineered to move cooling water through the drive and engine to prevent overheating. A worn impeller is one of the most common causes of overheating and reduced cooling flow, and Sierra recommends replacing the entire pump kit together so that the impeller, seals, and gaskets are refreshed as a set rather than individually. Each Sierra part is built to meet or exceed the quality of the original equipment part it replaces. The kit is finished in white and weighs 1.55 pounds as packaged.\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 18-3570\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.55 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e 18-2599 Face Seal and Tool, 18-3056 Impeller, 18-3122 Impeller Plate, 18-7420 O-Ring, 18-2944 Seal Ring Gasket, 18-2945 Drain Screw Gasket, 18-2564 Water Pump Gasket, 18-2566 Cover Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e MerCruiser Alpha I - Generation II \u0026amp; Vazer, serial number 0D494569 and above\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e Mercury Marine 817275A1, 817275A2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282112905\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMerCruiser Alpha I - Generation II \u0026amp; Vazer, serial number 0D494569 and above\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e817275A1 (Mercury Marine)\u003c\/li\u003e\n\u003cli\u003e817275A2 (Mercury Marine)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3570 Water Pump Kit include?\u003c\/strong\u003e The kit includes a face seal and installation tool (18-2599), impeller (18-3056), impeller plate (18-3122), O-ring (18-7420), seal ring gasket (18-2944), drain screw gasket (18-2945), water pump gasket (18-2564), and cover gasket (18-2566).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat MerCruiser drives does the 18-3570 fit?\u003c\/strong\u003e It fits MerCruiser Alpha I - Generation II and Vazer drives with serial number 0D494569 and above.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3570 a direct replacement for Mercury Marine 817275A1?\u003c\/strong\u003e Yes, the Sierra 18-3570 Water Pump Kit cross-references to Mercury Marine 817275A1 and 817275A2 and is built to meet or exceed the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3570 Water Pump Kit weigh?\u003c\/strong\u003e The kit weighs 1.55 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-3570 kit finished in?\u003c\/strong\u003e The Sierra 18-3570 Water Pump Kit is finished in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3570 kit include the impeller?\u003c\/strong\u003e Yes, the kit includes the Sierra 18-3056 impeller as one of its components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the kit come with a face seal for installation?\u003c\/strong\u003e A face seal and installation tool, part number 18-2599, is included in the 18-3570 kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat gaskets are included in the 18-3570 water pump kit?\u003c\/strong\u003e Four gaskets are included: the 18-2944 seal ring gasket, 18-2945 drain screw gasket, 18-2564 water pump gasket, and 18-2566 cover gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-3570 a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e It is a genuine Sierra part, manufactured to meet or exceed the quality of the original equipment component it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3570 Water Pump Kit?\u003c\/strong\u003e The UPC for the 18-3570 kit is 808282112905.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3570 kit include an O-ring?\u003c\/strong\u003e Yes, an 18-7420 O-ring is included as part of the 18-3570 water pump kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat serial number range does the 18-3570 cover on Alpha I Generation II drives?\u003c\/strong\u003e The 18-3570 kit covers MerCruiser Alpha I - Generation II and Vazer drives with serial number 0D494569 and above.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988154101979,"sku":"SIE-18-3570","price":72.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-3570__70309.1722360759.500.750.jpg?v=1785188021","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3570-water-pump-kit-for-mercury-outboards-replaces-mercury-817275a2-817275a1-impeller-housing-face-seal-plate","provider":"Good Vibes Marina","version":"1.0","type":"link"}