Stage 1 upgrade for the 2020-2025 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 high performance applications. - Kit replaces the restricted 2-piece, resonator equipped, 2.5 in. diameter driver (hot) side intercooler pipe and leak-prone 2-piece plastic / rubber passenger (cold) side pipe with WCFab's heavy duty 3 in. diameter 1-piece Driver (Hot) Side and 3.5 in. diameter Passenger (Cold) Side L5P Intercooler Pipes. Made in the USA from high strength, heavy duty 14 ga. aluminum tube with smooth, aerodynamic mandrel bends for increased durability and optimized flow. 3 in. Driver Side pipe eliminates the OEM resonator and middle boot joint for improved flow and durability and includes high quality reinforced silicone boots and stainless t-bolt clamps for superior temperature resistance and boost pressure holding capabilities. 3.5" Passenger Side pipe features a CNC machined flange with a double o-ring seal and an upgraded silicone boot in order to withstand higher boost pressures than the factory components to increase reliability and eliminate blown factory boots and horsepower robbing boost leaks. Full assembly finished in your choice of WCFab's signature custom powder coat colors for a look as unique as your truck. Installs with basic hand tools. Compatible with stock trucks, no tuning required. Saves $25 vs. buying individually. Installation Instructions
This Part Fits:
Year
Make
Model
Submodel
2021-2025
Chevrolet
Silverado 2500 HD
Custom
2020-2025
Chevrolet
Silverado 2500 HD
High Country
2020-2025
Chevrolet
Silverado 2500 HD
LT
2020-2025
Chevrolet
Silverado 2500 HD
LTZ
2020-2025
Chevrolet
Silverado 2500 HD
WT
2024-2025
Chevrolet
Silverado 2500 HD
ZR2
2020-2025
Chevrolet
Silverado 3500 HD
High Country
2020-2025
Chevrolet
Silverado 3500 HD
LT
2020-2025
Chevrolet
Silverado 3500 HD
LTZ
2020-2025
Chevrolet
Silverado 3500 HD
WT
2020-2025
GMC
Sierra 2500 HD
AT4
2024-2025
GMC
Sierra 2500 HD
AT4X
2020-2021
GMC
Sierra 2500 HD
Base
2020-2025
GMC
Sierra 2500 HD
Denali
2024-2025
GMC
Sierra 2500 HD
Denali Ultimate
2022-2025
GMC
Sierra 2500 HD
Pro
2020-2025
GMC
Sierra 2500 HD
SLE
2020-2025
GMC
Sierra 2500 HD
SLT
2020-2025
GMC
Sierra 3500 HD
AT4
2020-2021
GMC
Sierra 3500 HD
Base
2020-2025
GMC
Sierra 3500 HD
Denali
2024-2025
GMC
Sierra 3500 HD
Denali Ultimate
2022-2025
GMC
Sierra 3500 HD
Pro
2020-2025
GMC
Sierra 3500 HD
SLE
2020-2025
GMC
Sierra 3500 HD
SLT
Delivery Times
Most in‑stock items are typically ready to ship or pick up within 2–3 business days after processing. Standard processing takes about 2–3 business days from when the order is received.Made‑to‑order and special‑order items require additional time. If an item has an extended ETA, it will be noted in the product description. For the most up‑to‑date ETA, please contact sales@smgspeed.com or use our live chat.