Wehrli 20-26 Chevy 2500HD/3500HD GMC 2500HD/3500HD 6.6L Duramax L5P 3.5" Passenger Side Intercooler Pipe Kit
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Description
Description
Why Choose the WCFab 3.5" Passenger Side Intercooler Pipe Kit?
- High Flow 3.5" Design – Replaces the restrictive OEM rubber/plastic intercooler pipe with a larger one-piece 14 ga. aluminum pipe for improved airflow and durability.
- Increased Boost Reliability – Helps reduce the possibility of blown boots and boost leaks that can rob horsepower and performance.
- Heavy Duty Construction – Built from 14 ga. aluminum with upgraded connection points designed to handle increased pressure and temperature.
- Precision Billet Connections – Includes CNC machined billet aluminum adapter with a double O-ring seal for improved sealing performance.
- Upgraded Hardware – Features an upgraded silicone boot and stainless T-bolt clamps for a secure connection.
- Factory Compatible – Designed to work with stock trucks with no tuning required.
- Bolt-On Installation – Provides an easy upgrade using factory mounting locations.
Kit Includes
- 3.5" passenger side intercooler pipe
- Black anodized CNC machined billet aluminum adapter
- Upgraded silicone boot
- Stainless T-bolt clamps
Installation Highlights
The WCFab 3.5" Passenger Side Intercooler Pipe Kit is a direct bolt-on upgrade that requires no tuning. The kit replaces the factory intercooler piping with a high-flow aluminum design while maintaining compatibility with stock trucks.
Fits These Models
2020-2026 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD equipped with the 6.6L L5P Duramax engine.
Specifications
- Pipe Diameter – 3.5"
- Material – 14 ga. Aluminum
- Connection Type – CNC Machined Flange with Double O-Ring Seal at Intercooler Connection
- Replacement GM Part Numbers – 23420958, 84682179
Key Features at a Glance
- 3.5" High Flow Pipe - Improves airflow while replacing restrictive factory piping.
- Billet Aluminum Adapter - Provides a secure connection with double O-ring sealing.
- Boost Leak Protection - Helps prevent blown boots and lost boost pressure.
- No Tune Required - Installs on stock trucks without calibration changes.
- Custom Powder Coat Finish - Available in the color of your choice.
Notes
- Compatible with stock trucks.
- Custom powder coated in the color of your choice.
- MPN: Not provided.
Questions? We’re Here to Help.
Have questions about upgrades for your vehicle? Contact FASS Motorsports and we’ll get you dialed:
Phone: 636-429-7020
Email: info@fassmotorsports.com
