Wehrli 2011-2016 LML Duramax Stage 1 High Flow Intake Bundle 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.
WCFab's Stage 1 high flow intake bundle opens up the airflow between the turbo and the engine on the 2011-2016 LML Duramax, improving throttle response and spool while removing the weak points in the factory piping that cause boost leaks under load.
- 3" high flow upper crossover intercooler pipe, roughly 20% larger than the OEM part, resonator eliminated
- 3.5" passenger (cold) side intercooler pipe replacing the factory two-piece plastic pipe
- 3" driver (hot) side intercooler pipe replacing the factory two-piece 2.5" pipe
- 14 gauge aluminum, threaded bung for the OEM intake temperature sensor
- Silicone boots, stainless T-bolt clamps and a billet turbo resonator block-off plate included
- Bolt on, no tuning required, made in the USA
Fits 2011-2016 Chevrolet Silverado and GMC Sierra 2500/3500 HD with the 6.6L LML Duramax. Uses the factory Y-bridge and connects to the factory throttle valve and grid heater.
Two-coat finishes carry an upcharge over single-coat colors. Select your color above; see the color chart image for every option and its order code.
This part fits the following vehicles:
| Years | Make & Model |
|---|---|
| 2011–2016 | Chevrolet Silverado 2500 HD |
| 2011–2016 | Chevrolet Silverado 3500 HD |
| 2011–2016 | GMC Sierra 2500 HD |
| 2011–2016 | GMC Sierra 3500 HD |
Fitment is listed by year, make and model. Some applications also depend on cab, bed, drivetrain or engine — if you are not sure, call 636-429-7020 or send us your vehicle details and we will confirm before you order.
