2001-2010 LB7, LLY, LBZ, LMM Crew Cab Duramax Fass Fuel System Relocation Mounting Bracket. Relocates the FASS fuel system to underneath the truck on the inside of the driver side frame rail. Relocation Mount for FASS Lift Pump 2001-2010 Duramax (Crew Cab Only) Features:...

2001-2004 LB7 Injection Lines complete set of 8- Over time LB7 Injection lines corrode and break, they are a leading cause of contamination when changing the Injectors. So if you are changing your injectors, or have a line failure we've got you covered with...

LLY Duramax High Pressure Injection Line (Number 4 and Number 5). Replacement high pressure fuel lines from Fleece Performance. These are a direct replacement for your cracked, broken, or leaking injector lines. Application Notes: Replaces GM Part number 97378827 2004.5-2005 Chevrolet Silverado 2500 2004.5-2005...

LLY Duramax High Pressure Injection Line (Number 3 and Number 6). Replacement high pressure fuel lines from Fleece Performance. These are a direct replacement for your cracked, broken, or leaking injector lines. Application Notes: Replaces GM Part number 97378826 2004.5-2005 Chevrolet Silverado 2500 2004.5-2005...

LLY Duramax High Pressure Injection Line (Number 2 and Number 7). Replacement high pressure fuel lines from Fleece Performance. These are a direct replacement for your cracked, broken, or leaking injector lines. Application Notes: Replaces GM Part number 97378828 2004.5-2005 Chevrolet Silverado 2500 2004.5-2005...

LLY Duramax High Pressure Injection Line (Number 1 and Number 8). Replacement high pressure fuel lines from Fleece Performance. These are a direct replacement for your cracked, broken, or leaking injector lines. Application Notes: Replaces GM Part number 97378825 2004.5-2005 Chevrolet Silverado 2500 2004.5-2005...

LLY Duramax High Pressure Injection Line Kit. Replacement high pressure fuel lines from Fleece Performance. These are a direct replacement for your cracked, broken, or leaking injector lines. Application Notes: Replaces GM Part number 97378825 (qty 2) Replaces GM Part number 97378828 (qty 2)...

Problem: If you are running an aftermarket pump that is mounted external of the fuel tank, you will need to install a draw straw or drill your fuel tank to accommodate a sump. Each of these has some pretty significant drawbacks including the 1/4...

2001-2005 Duramax Twin CP3 Pump Controller to operate dual CP3's. Twin CP3 Controller for 2001-2005 Duramax LB7/LLY Features: Twin CP3 Pump Controller Wire Harness Connectors Vehicle Fitments 2001-2005 GMC 6.6L DURAMAX 2001-2005 CHEVROLET 6.6L DURAMAX

Short Stainless Rail Fitting for LB7 & LLY or LML Fuel Rails. 1/8" ID for increase fuel flow. High Flow Rail Fitting (Short) for 01-05 & 11-16 Duramax Features: Stainless Rail Fitting Vehicle Fitments 2001-2005 & 2011-2016 GMC 6.6L DURAMAX 2001-2005 & 2011-2016 CHEVROLET...

The Fleece Performance Duramax 10mm stroker CP3 is a straight forward, no inflated numbers, CP3 upgrade proven to support 750 RWHP with the proper complimenting modifications. Not only will it support 750 RWHP, but it also eliminates the factory fuel flow restiction that begins...

The Fleece Performance CP3K is a modified Duramax LBZ CP3 designed to eliminate the factory fuel flow restriction that begins at 3,000 RPM. If you have a stock CP3 pump you are losing fuel flow and rail pressure after 3000 RPM, which correlates to...

If you're running an aftermarket positive displacement lift pump like our PowerFlo on your Duramax our fuel primer bulb sealing kit will allow you to eliminate the leak prone primer bulb from your fuel system. The sealing cap includes a 1/8 inch NPT port...

The PowerFlo Lift Pump is the latest OEM replacement performance lift pump from the diesel experts at Fleece Performance. The PowerFlo is the only in-tank lift pump capable of supporting up to 800 hp! Direct OEM In-Tank Replacement: The PowerFlo Lift Pump retains the...

Problem: If you are running an aftermarket pump that is mounted external of the fuel tank, you will need to install a draw straw or drill your fuel tank to accommodate a sump. Each of these has some pretty significant drawbacks including the ?...

The LB7 PowerFlo lift pump is the latest OEM replacement performance lift pump from the diesel experts at Fleece Performance. Direct OEM In-Tank Replacement: The PowerFlo Lift Pump retains the factory fuel lines and installs in less than half the time of other high...

The WCFab 2001-2016 Duramax Up Pipe Bolt Kit is comprised of 6 specially selected high strength 12 point ARP fasteners and matched washers with a pack of assembly lube and are designed as an upgrade to the OEM fasteners employed on the 2001-2016 and...

Replace the light weight, leak prone Driver side OEM up pipe with this heavy duty 11 gauge 2" Stainless up pipe. HD Stainless Bellow that will not crack and leak like OEM. Increase Turbo spool up and decrease EGT's. Will work with ANY Turbo...

4" Twin Turbo Down Pipe for LB7/LLY/LBZ/LMM Duramax Down Pipe 4in. for LB7/LLY/LBZ/LMM Duramax with Twin / Compound Turbo Features: 4" Twin Turbo Down Pipe for LB7/LLY/LBZ/LMM Duramax For custom built racing applications to fabricate your own twin turbo kit Use in conjunction with...