The 3" High Flow Driver side Intercooler pipe for the 2020-2025 L5P Duramax. Replaces the OEM two piece design with a high flow one piece 3" pipe. It also includes upgraded silicone boots that withstand higher pressure and temperature than the factory boots to increase reliability and eliminate blown factory boots.
Replaces GM Part Numbers: 84660608, 84870726
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Reviewed by: tradd07/30/2021 03:47PM
Product ownership: Less than 1 month
Purchased from: Wehrli Custom Fabrication - WCFab
Comments:
For to anyone thinking about this, you'll see an instant difference in intercooler performance and in turbo whistle. Instead of blowing up like a balloon, this solid pipe delivers pressure as soon as the turbo spins up.
To install, be sure to unplug the ECU connectors just above the lower intercooler input to give you room to work without damaging the wiring harnesses. I did my best and took my time and I still ended up with a few battle scars on the pipe, but I didn't do this for looks.
Great product and I plan to buy anything these guys make for the '21 L5P!
Reviewed by: James08/09/2024 10:15PM
Product ownership: Less than 1 week
Purchased from: Wehrli Custom Fabrication - WCFab
Comments:
Happy with the single hot side pipe. Shipping was fast. Installation was a breeze with the included instructions. Maybe an hour taking my time. (Be sure to disconnect the ECU plugs for additional space). Note* be sure to disconnect the battery before unplugging the ECU harness or you will get a CEL. Leaving the bubble wrap on definitely saved me a few scratches when fitting it up the wheel well. Clamps tighten down great. Happy with the purchase and install experience!!