{"product_id":"chevy-big-block-348-409-high-flow-mechanical-water-pump-black","title":"Chevy Big Block 348\/409 High-Flow Mechanical Water Pump - Black","description":"\u003cp\u003eThis Chevy 348\/409 W-Series High-Flow Mechanical Water Pump is designed for Chevrolet Big Block Gen I \"W\" engines. Featuring a high-volume 8-vane anti-cavitation impeller and lightweight aluminum housing, it helps improve coolant circulation while maintaining compatibility with 348 and 409 accessory drive systems.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePulley Alignment\u003c\/strong\u003e\u003cbr\u003e5\/8 In. pilot diameter help position the pulley and fan drive during installation.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eImpeller \u0026amp; Flow Design\u003c\/strong\u003e\u003cbr\u003eThe high-volume impeller setup helps move coolant steadily through the block, heads, and radiator circuit.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003cbr\u003eConfirm gasket requirements, pulley alignment, and hose routing before final assembly.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCOMPATIBLE WITH\u003c\/strong\u003e\u003cbr\u003eCHEVROLET BIG BLOCK V8 GEN. I (W)\u003cbr\u003e• 5.7 L \/ 348 in3\u003cbr\u003e• 6.7 L \/ 409 in3\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003cbr\u003ePump Flow: High-Volume\u003cbr\u003ePump Material: Aluminum\u003cbr\u003ePump Rotation: Clockwise\u003cbr\u003ePilot Diameter: 5\/8 In.\u003cbr\u003eCrank Hub Thickness: 1\/2 In.\u003cbr\u003eGaskets: Included\u003cbr\u003eFinish: Polished\u003cbr\u003e\u003c\/p\u003e","brand":"Top Street Performance","offers":[{"title":"Default Title","offer_id":49983806374184,"sku":"HC8009BK","price":265.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/8356\/5608\/files\/HC8009BK_05.jpg?v=1781126996","url":"https:\/\/www.topstreetperformance.com\/products\/chevy-big-block-348-409-high-flow-mechanical-water-pump-black","provider":"Top Street Performance","version":"1.0","type":"link"}