2001-2004 LB7 Duramax

Fleece Performance Engineering

Duramax Oil Cooler Adapter

Fleece Performance Engineering

6.6L Duramax Billet Coolant Block Off Plate (2001-2023)

Fleece Performance Engineering

LB7 High Pressure Injection Lines (Complete Set of 8)

Fleece Performance Engineering

All Lights On® (2003-2007 Select GM Models)

Fleece Performance Engineering

LB7 Duramax Intake Air Heater Plug

Fleece Performance Engineering

GM/Allison Kodiak/TopKick Tapshifter

Fleece Performance Engineering

2003-2005 GM/Allison TapShifter

Fleece Performance Engineering

Allison Transmission Cooler Lines for 2001-2005 (LB7-LLY)

Fleece Performance Engineering

AlliLocker

Fleece Performance Engineering

Tie Rod Reinforcement Sleeves for 1999-2010 GM 2500-3500HD Pickups

Fleece Performance Engineering

2001-2002 GM/Allison TapShifter

Fleece Performance Engineering

Remote Turbo Oil Feed Line Kit for 2001-2016 Duramax with 1/4 NPT Turbo Oil Inlet (S300/S400)