Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard working and...

Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard working and...

Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard working and...

Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard working and...

Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard working and...

Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard working and...

Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard working and...

Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard working and...

Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard working and...

Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard working and...

Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard working and...

Replacement O-Ring for Duramax L5P Passenger Side Intercooler Pipe Outlet Flange Connection. Used on the following WCFab Kits: 17-19 L5P Passenger Side Intercooler Pipe, 20-23 L5P Passenger Side Intercooler Pipe. O-Ring Seal WCFab L5P PASSENGER SIDE INTERCOOLER PIPE INTERCOOLER OUTLET FLANGE Features: Sold individually....

Replacement O-Ring for Duramax L5P Passenger Side Intercooler Pipe Throttle Valve Flange Connection. Used on the following WCFab Kits: 20-23 L5P Passenger Side Intercooler Pipe (WCF100381) O-Ring Seal WCFab 2020+ L5P PASSENGER SIDE INTERCOOLER PIPE THROTTLE VALVE FLANGE Features: Sold individually. Intercooler pipe flange...

Replacement O-Ring for S400 Compressor outlet flanges. Used on WCFab S400/stock twin kits and S400 Single Turbo Kits. O-Ring Seal S400 COMPRESSOR OUTLET

Replacement O-Ring for Duramax L5P VGT Turbo Flange. Used on the following WCFab Kits: 2017-2019 L5P Duramax 3.5" Turbo Intake Horn (WCF100721), 2020-2023 L5P Duramax 3.5" Turbo Intake Horn (WCF100833) O-Ring Seal WCFab L5P VGT TURBO FLANGE

Contains one 4" x 4" Straight Hump Boot with Logo and two 4" T-Bolt Clamps 4" ID x 4" Long Silicone Hump Boot and Clamp Kit Features: Qty. 1 of 4" x 4" Straight Hump Boot Qty. 2 of 4" T-Bolt Clamp *Replacement part...

Contains one 5" ID x 2.5" Boot with Logo and two 5" T-Bolt Clamps 5" ID x 2.5" Long Silicone Boot and Clamp Kit Features: Qty. 1 of 5" ID x 2.5" Boot Qty. 2 of 5" T-Bolt Clamp *Replacement part for models WCF100489,...

Contains one 4" ID x 3" ID Straight Boot with Logo and two 4" T-Bolt Clamps. 4" ID x 3" Long Silicone Boot and Clamp Kit Features: Qty. 1 of 4" ID x 3" ID Straight Boot Qty. 2 of 4" T-Bolt Clamp *Replacement...

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...

Contains one 3" x 4" Silicone Reducer Boot with Logo, and two 3" T-Bolt Clamps. 3" ID x 4" Long Silicone Boot and Clamp Kit Features: Qty. 1 of 3" x 4" Silicone Boot Qty. 2 of 3" T-Bolt Clamp *Replacement part for models...