{"product_id":"sierra-18-3321-water-pump-housing-kit-mercruiser","title":"Sierra 18-3321 Water Pump Housing Kit - Mercruiser","description":"\u003cp\u003eSierra 18-3321 Complete Water Pump Repair Kit for select early MerCruiser No. 1 sterndrives with flush, serial numbers 2495186–2763441. This marine engine cooling and raw-water pump replacement kit includes the water-pump housing, pump base, impeller, wear plate, water-tube guide, seals, O-rings, and installation gaskets. Designed to meet or exceed OEM specifications and restore reliable cooling-water circulation. Fits select 1967–1969 MerCruiser 120 HP, 140 HP, and 160 HP stern-drive applications. Cross-references Mallory 9-48308, GLM 12130, and Recmar 46-96148A8. Ideal for boat maintenance, marine water-pump repair, impeller replacement, sterndrive service, and MerCruiser cooling-system restoration. Verify engine model, drive type, and serial number before ordering.\u003c\/p\u003e","brand":"Base Industries","offers":[{"title":"Default Title","offer_id":45307029356659,"sku":"150537","price":155.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/5827\/2883\/files\/sierra-18-3321-water-pump-kit-18-3321.webp?v=1785871569","url":"https:\/\/www.baseindustries.com\/products\/sierra-18-3321-water-pump-housing-kit-mercruiser","provider":"Base Industries","version":"1.0","type":"link"}