{"product_id":"ford-small-block-billet-aluminum-underdrive-pulley-set-black","title":"Ford Small Block Billet Aluminum Underdrive Pulley Set - Black","description":"\u003cp\u003eThis billet aluminum underdrive pulley set is built for Ford Small Block Windsor 302 (5.0L) and 351 Windsor (5.8L) engines running a factory-style 6-rib serpentine accessory drive. Reducing accessory drive speed frees up usable engine horsepower by lowering the energy needed to spin the water pump and alternator, while the lightweight billet aluminum construction cuts rotating mass compared to stock steel pulleys.\u003c\/p\u003e\n\u003cp\u003eThe set includes a 6-groove serpentine crankshaft pulley, a non-ribbed water pump pulley, a 6-groove serpentine alternator pulley, and the crankshaft pulley bolts needed for installation. Power steering, A\/C, and idler pulleys are not included, which keeps this kit compatible with a range of existing accessory configurations rather than requiring a full accessory drive swap.\u003c\/p\u003e\n\u003cp\u003eThis kit is designed for 1979–1996 serpentine-equipped 302 and 351W applications, with one exception: it does not fit 1994–1995 Ford Mustang applications. Confirm your accessory configuration, belt alignment, and clearance before installation, since serpentine routing varies across Windsor-powered platforms.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003cbr\u003eFits Ford Small Block Windsor 302 (5.0L) and 351W (5.8L) engines using a factory-style 6-rib serpentine belt system, 1979–1996, excluding 1994–1995 Ford Mustang applications. Common uses include Fox Body–era Mustang performance builds (1979–1993), F-150 and Bronco 5.0L\/5.8L projects, LTD and Crown Victoria 5.0L upgrades, street rods, and restomod Windsor-powered builds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003cbr\u003eSet includes crankshaft, water pump, and alternator pulleys along with crankshaft pulley bolts. Power steering, A\/C, and idler pulleys are not included — verify your existing accessory configuration, belt alignment, and clearance before installing, since compatibility depends on how your current accessory drive is set up.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBLE WITH\u003c\/strong\u003e\u003cbr\u003eFORD SMALL BLOCK WINDSOR V8\u003cbr\u003e• 4.9 L \/ 302 in3 generally referred to as 5.0 L\u003cbr\u003e• 5.8 L \/ 351 in3 generally referred to as 351W\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTES\u003c\/strong\u003e\u003cbr\u003e• Fits Ford Small Block Windsor 302 (5.0L) and 351W (5.8L) engines.\u003cbr\u003e• Designed for factory-style 6-rib serpentine belt systems.\u003cbr\u003e• Verify accessory configuration, belt alignment, and clearance before installation.\u003cbr\u003e• Does not fit 1994–1995 Ford Mustang applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMMON VEHICLE APPLICATIONS\u003c\/strong\u003e\u003cbr\u003e• Ford Mustang 5.0L performance builds (1979–1993)\u003cbr\u003e• Ford F-150 5.0L and 5.8L performance projects\u003cbr\u003e• Ford Bronco 5.0L and 5.8L builds\u003cbr\u003e• Ford LTD and Crown Victoria 5.0L upgrades\u003cbr\u003e• Street rods and hot rods using Small Block Ford Windsor engines\u003cbr\u003e• Restomod and custom Ford performance builds\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSPECIFICATIONS\u003c\/b\u003e\u003cbr\u003ePulley Style: Serpentine\u003cbr\u003ePulley Set Style: Performance Ratio\u003cbr\u003ePulley Material: Aluminum\u003cbr\u003eCrankshaft Pulley Grooves: 6-Groove Serpentine\u003cbr\u003eWater Pump Pulley Grooves: Non-Ribbed\u003cbr\u003eAlternator Pulley Grooves: 6-Groove Serpentine\u003cbr\u003ePower Steering Pulley: Not Included\u003cbr\u003eAir Conditioning Pulley: Not Included\u003cbr\u003eIdler Pulley: Not Included\u003cbr\u003eHardware: Crankshaft Pulley Bolts\u003cbr\u003eQuantity: Sold as a Set Of 3\u003c\/p\u003e","brand":"Top Street Performance","offers":[{"title":"Default Title","offer_id":52322425307432,"sku":"JM5005BK","price":78.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/8356\/5608\/files\/jm5005bk_1.jpg?v=1732637145","url":"https:\/\/www.topstreetperformance.com\/products\/ford-small-block-billet-aluminum-underdrive-pulley-set-black","provider":"Top Street Performance","version":"1.0","type":"link"}