1998.5-2007 5.9L Cummins Billet Intake Spacer Kit. This high flowing CNC machined billet aluminum plate allows maximum air flow from the intake horn into the cylinder head - increasing turbo spool up and performance. Unlike many other options on the market that utilize frustrating,...

1998.5-2007 5.9L Cummins Billet Intake Spacer Kit. This high flowing CNC machined billet aluminum plate allows maximum air flow from the intake horn into the cylinder head - increasing turbo spool up and performance. Unlike many other options on the market that utilize frustrating,...

1998.5-2007 5.9L Cummins Billet Intake Spacer Kit. This high flowing CNC machined billet aluminum plate allows maximum air flow from the intake horn into the cylinder head - increasing turbo spool up and performance. Unlike many other options on the market that utilize frustrating,...

1998.5-2007 5.9L Cummins Billet Intake Spacer Kit. This high flowing CNC machined billet aluminum plate allows maximum air flow from the intake horn into the cylinder head - increasing turbo spool up and performance. Unlike many other options on the market that utilize frustrating,...

1998.5-2007 5.9L Cummins Billet Intake Spacer Kit. This high flowing CNC machined billet aluminum plate allows maximum air flow from the intake horn into the cylinder head - increasing turbo spool up and performance. Unlike many other options on the market that utilize frustrating,...

Clean up the engine bay of your 1998.5-2023 Cummins truck with this anodized billet aluminum oil fill cap from WCFab. This is a complete cap not a cover. Direct OEM replacement. CNC machined in the USA from billet aluminum. Available in your choice of...

Clean up the engine bay of your 1998.5-2023 Cummins truck with this anodized billet aluminum oil fill cap from WCFab. This is a complete cap not a cover. Direct OEM replacement. CNC machined in the USA from billet aluminum. Available in your choice of...

The factory plastic GM Coolant Heater Core Firewall Fitting is a common failure point on Duramax trucks and other GM vehicles. Our made in the USA, billet aluminum direct-fit replacement is more resistant to heat and vibration. Prevent leaks with this easy to install...

Clean up the engine bay of your 1999-2024 GM 1500/2500/3500 truck with this anodized billet aluminum brake reservoir cap from WCFab. This is a complete cap not a cover. Direct OEM replacement. CNC machined in the USA from billet aluminum. Reuses your OEM diaphragm...

Clean up the engine bay of your 1999-2024 GM 1500/2500/3500 truck with this anodized billet aluminum brake reservoir cap from WCFab. This is a complete cap not a cover. Direct OEM replacement. CNC machined in the USA from billet aluminum. Reuses your OEM diaphragm...

Contains one 2" ID x 3.5" Long Silicone Boot with Logo and two 2" T-Bolt Clamps. 2" ID x 3.5" Long Silicone Boot and Clamp Kit Features: Qty. 1 of 2" ID x 3.5" Long Straight Boot with Logo Qty. 2 of 2" T-Bolt...

Contains one 2.375" x 3" ID Silicone Reducer Boot 4.5" Long with Logo, one 3" T-Bolt Clamp and one 2.375-2.5" T-Bolt Clamp. 2.375" x 3" ID Straight Reducer 4.5" Long Silicone Boot and Clamp Kit Features: Qty. 1 of 2.375" x 3" ID Silicone...

Contains one 2.75" x 3" ID Straight Reducer 4.5" Long Silicone Boot with Logo, one 3" T-Bolt Clamp and one 2.75" T-Bolt Clamp. 2.75" x 3" ID Straight Reducer 4.5" Long Silicone Boot and Clamp Kit Features: Qty. 1 of 2.75" x 3" ID...

Clean up the engine bay of your 2001+ Duramax truck with this anodized billet aluminum oil fill tube cap from WCFab. This is a complete cap not a cover. Direct OEM replacement. CNC machined in the USA from billet aluminum. Available in your choice...

Clean up the engine bay of your 2001+ Duramax truck with this anodized billet aluminum oil fill tube cap from WCFab. This is a complete cap not a cover. Direct OEM replacement. CNC machined in the USA from billet aluminum. Available in your choice...

Replace the light weight, leak prone passenger 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. This up pipe is built...

Replace the light weight, leak prone passenger side OEM up pipe with this heavy duty 11 gauge 2" Stainless up pipe. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo spoolup and decrease EGT's. This up pipe is built with...

Replace the lightweight, leak prone, 1 5/8" OEM up pipes with these heavy duty 11 gauge 2" Stainless up pipe kit. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo spoolup and decrease EGT's. This kit is for use with...

Replace the lightweight, leak prone, 1 5/8" OEM up pipes with these heavy duty 11 gauge 2" Stainless up pipe kit. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo spool-up and decrease EGT's. This kit is for use with...

3 1/2" Turbo Intake Horn for 2001-2004 LB7 Duramax. Compatible with factory IHI Turbo or upgraded drop in IHI Turbos and OEM or aftermarket intakes. Great upgrade offering quicker spool up and more HP! Max-effort tuned trucks can see 10-15HP gains while applications with...