This quick and easy to install, billet aluminum plug allows you to clean up your engine bay and get more aggressive turbo sound in minutes by removing the big plastic resonator connected to your OEM intake. 100% warranty and emissions friendly. CNC machined in the USA from 6061 aluminum. Black anodized finish with engraved Wehrli Custom Fabrication logo.

3.5 inch Turbo Intake Horn for the 2020+ L5P Duramax with factory style Turbo. Improves air flow to turbo by removing restriction found in the factory horn right before the turbo inlet. Tuning not required, this horn will work plug and play tuners or OEM calibration.

• NO Tuning required, bolt on!
• Will fit with OEM or any aftermarket intake kit.
• Will fit on stock truck no other modifications or upgrades necessary!

3.5 Inch Turbo Intake Horn for the 2020+ L5P Duramax with factory style (VGT) turbo. 

• Replaces injection molded plastic OEM turbo intake horn
• Improves air flow to turbo by removing restriction found in the factory horn right before the turbo inlet
• Includes breather line hose and fitting
• For use on modified trucks
• Tuning recommended with this part
• See WCF100833 as a bolt on upgrade for stock and lightly modified trucks with no tuning required.

2020+ L5P Duramax Fabricated Aluminum Coolant Tank Kit, mounts in OEM coolant tank location.

• Dress up your engine bay by replacing the ugly clear plastic coolant reservoir with our custom powder coated fabricated aluminum coolant tank with sight glass
• includes black anodized CNC machined billet aluminum cap, mounting hardware, overflow hose and low coolant sensor
• Will fit on stock trucks with no other modifications necessary
• Uses OEM mounting points
• Installs easily with basic hand tools