{"product_id":"water-pump-for-gm-big-block-7-4-8-2-409-454-502-850454-18-3577-18-3574-9-42604","title":"Water Pump for GM Big Block 7.4 8.2 409 454 502 850454 18-3577 18-3574 9-42604","description":"\u003cstrong\u003eThis Water Pump is a replacement water pump compatible with GM Big Block engines including 7.4L, 8.2L, 409, 454, 502 and matches OEM Part# 850454, 18-3577, 18-3574, 9-4264.\u003c\/strong\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis water pump is engineered for GM Big Block engines, covering displacements from 7.4L to 502. It circulates coolant efficiently to prevent overheating in high-performance vehicles, trucks, and marine applications. A direct replacement for part numbers 850454, 18-3577, 18-3574, and 9-4264, this heavy-duty pump restores original cooling system performance.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect fit for GM Big Block 7.4L, 8.2L, 409, 454, and 502 engines\u003c\/li\u003e\n\u003cli\u003eHigh-flow impeller design for superior coolant circulation\u003c\/li\u003e\n\u003cli\u003eDurable construction withstands high operating temperatures\u003c\/li\u003e\n\u003cli\u003eIncludes gasket for straightforward installation\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM specifications for reliable performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGM Big Block 7.4L (454)\u003c\/li\u003e\n\u003cli\u003eGM Big Block 8.2L (502)\u003c\/li\u003e\n\u003cli\u003eGM 409 V8\u003c\/li\u003e\n\u003cli\u003eGM 454 V8\u003c\/li\u003e\n\u003cli\u003eGM 502 V8\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Uses\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReplacing worn or leaking water pumps on Chevrolet\/GMC big block trucks and SUVs\u003c\/li\u003e\n\u003cli\u003eCooling high-performance big block engines in hot rods and muscle cars\u003c\/li\u003e\n\u003cli\u003eMarine engine cooling in boats equipped with GM big block power\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Cast iron housing with steel impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet\/Outlet:\u003c\/strong\u003e Standard big block hose connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e 850454, 18-3577, 18-3574, 9-4264\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this pump fit a 454 in a 1970 Chevelle?\u003cstrong\u003e A:\u003c\/strong\u003e Yes, it is designed for 454 big block engines used in many classic Chevrolet vehicles, but verify pulley alignment and bracket fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does it come with a gasket?\u003cstrong\u003e A:\u003c\/strong\u003e Yes, a gasket is typically included for a complete installation. Always check the package contents upon receipt.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eProduct appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"DURAFORCE","offers":[{"title":"Default Title","offer_id":53676767314193,"sku":"ZZ2Y02349","price":215.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/57_a55fa828-8585-4cc7-85b9-ae934785d5f6.jpg?v=1781577919","url":"https:\/\/www.duraforce.com\/products\/water-pump-for-gm-big-block-7-4-8-2-409-454-502-850454-18-3577-18-3574-9-42604","provider":"DURAFORCE","version":"1.0","type":"link"}