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Collection:

2001-2004 GM 2500/3500

302 products
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Regular price $729.00
Sale price $729.00
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Fleece Performance billet rocker arm bridges for the GM 6.6L Duramax.   FEATURES These bridges offer a massive 2.5-time strength improvement over factory bridges. Machined from billet 8620 steel, t...
Regular price $141.00
Sale price $141.00
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Dress up your Allison Transmission with our Billet PTO Cover Kit. Complete kit includes covers, gaskets, and button head bolts to give your transmission a clean look. 
Regular price $79.00
Sale price $79.00
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Upgrade your rear engine cover and stop the coolant leaks for good! Our blocking plate is thicker than the stock plate and has an integral square cut O-ring with no gasket required. OE covers are p...
Regular price $57.00
Sale price $57.00
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Fleece Performance 01-16 GM 2500/3500 Duramax Billet Oil Cap Cover - Red
Regular price $568.00
Sale price $568.00
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The Fleece Performance TapShifter allows you to shift your 2003-2005 GM Allison Transmission with the touch of a button just like the 2006 and newer trucks. Perfect for towing, drag racing, daily d...
Regular price $57.00
Sale price $57.00
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Dress up your engine bay with our billet aluminum oil cap for the 2001-2016 Duramax!  Includes o-ring and cam-lock and is a direct replacement for your OEM cover.