Earn Boost Points on Every Purchase — Join Free & Save!

Hooligan Turbochargers In Stock Ready To Ship!

Contamination Kits In Stock!

Now Offering Vehicles For Sale!

2001-2004 GM 2500/3500

294 products
Fleece | 2001-2007 GM Duramax / 2011-2016 GM 2500 / 3500 Duramax Oil Cooler Adapter Kit Fleece | 2001-2007 GM Duramax / 2011-2016 GM 2500 / 3500 Duramax Oil Cooler Adapter Kit
$99.00
$99.00
Fleece Performance 01-07 GM Duramax / 11-16 GM 2500/3500 Duramax Oil Cooler Adapter Kit.
Fleece | 2001-2004 GM Duramax LB7 Freedom Cylinder Head With Cupless Injector Bore (Passenger Side) Fleece | 2001-2004 GM Duramax LB7 Freedom Cylinder Head With Cupless Injector Bore (Passenger Side)
$1,199.00
$1,199.00
Fleece Performance 01-04 GM Duramax LB7 Freedom Cylinder Head w/Cupless Injector Bore (Passenger Side)
Fleece | 2001-2004 GM Duramax LB7 Freedom Cylinder Head With Cupless Injector Bore (Driver Side) Fleece | 2001-2004 GM Duramax LB7 Freedom Cylinder Head With Cupless Injector Bore (Driver Side)
$1,199.00
$1,199.00
Fleece Performance 01-04 GM Duramax LB7 Freedom Cylinder Head w/Cupless Injector Bore (Driver Side)
Fleece | 2001-2004 GM Duramax 6.6L LB7 High Flow LB7 Intake Horn Fleece | 2001-2004 GM Duramax 6.6L LB7 High Flow LB7 Intake Horn
$99.75
$99.75
Increase your LB7's potential with this simple, but effective upgrade. Back-to-back dyno pulls showed an increase of 15hp with this Fleece Performance Modified LB7 Intake Horn ? that?s about the ch...
FLEECE PERFORMANCE | 2001-2004 GM DURAMAX 6.6L LB7 63MM BILLET LB7 CHEETAH TURBOCHARGER Fleece | 2001-2004 GM Duramax 6.6L LB7 63MM Billet LB7 Cheetah Turbocharger
$1,999.00
$1,999.00
Wake up your 2001-2004 LB7 with the drop in replacement Fleece Performance LB7 Cheetah Turbocharger. Featuring a Fleece Performance custom 63mm compressor wheel and high flow Inconel turbine wheel,...
Fleece | 2001-2002 GM 6.6L LB7 Duramax Allison Tapshifter Fleece | 2001-2002 GM 6.6L LB7 Duramax Allison Tapshifter
$399.00
$399.00
The Fleece Performance TapShifter allows you to shift your 2001-2005 GM Allison Transmission with the touch of a button just like the 2006 and newer trucks. Perfect for towing, drag racing, daily d...