Wehrli WCF100530-GB 3.5" Passenger Side Intercooler Pipe for 17-19 GM Durama

Vehicle Fitment

• 2017-2019 GM 6.6L Duramax L5P (Chevrolet Silverado 2500HD/3500HD, GMC Sierra 2500HD/3500HD)

Features

• 3.5" mandrel-bent aluminum intercooler pipe replacing restrictive factory plastic section
• Passenger (cold) side orientation
• CNC-machined flange with double O-rings for superior sealing
• Upgraded silicone boot and stainless steel T-bolt clamps for secure boost-resistant fit
• Integrated threaded bung for reinstalling the OEM intake temperature sensor
• Eliminates boost leaks common with factory clip-ring design
• Bolt-on installation with no tuning required
• Durable gloss black powder-coat finish

Specifications

• Part Number: WCF100530-GB
• Intercooler Pipe Diameter: 3.5" (89 mm)
• Material: 14 ga aluminum
• Finish: Gloss black powder coat
• Orientation: Passenger side (cold side)
• Seal: Double O-ring CNC flange
• Hose Boot: High-pressure silicone
• Installation: Direct bolt-on, no tuning required

Included Components

• 1x 3.5" passenger side intercooler pipe
• 1x High-pressure silicone boot
• 2x Stainless steel T-bolt clamps
• O-rings and hardware

Product Description

The Wehrli WCF100530-GB 3.5" Passenger Side Intercooler Pipe is a high-flow upgrade for 2017-2019 GM 6.6L Duramax L5P trucks. This gloss black-finished aluminum pipe replaces the factory plastic two-piece section on the passenger (cold) side of the intercooler system with a robust one-piece 3.5" design, improving airflow and helping eliminate weak points in the stock setup that can lead to boost leaks and blown boots. The CNC-machined flange with double O-rings ensures a reliable seal, and the included threaded bung allows you to reinstall the OEM intake temperature sensor.

Designed as a direct bolt-on component with no tuning required, this intercooler pipe fits stock trucks without modifications. Premium silicone boots and stainless steel T-bolt clamps provide secure, boost-resistant connections that outperform the OEM clip-ring design. Finished in durable gloss black powder coat, the WCF100530-GB enhances both performance and engine bay aesthetics for Duramax owners seeking improved reliability and airflow.