Wehrli · New
Wehrli 2020-2024 Chevrolet 6.6L L5P Duramax 4in Intake Pipe (Use w/OEM Air Box) - WCFab Grey
MPN WCF100720-GRY · Store SKU wcfWCF100720-GRY
Supplier stock checked 11/7/2026, 12:35:17 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
WCFab's 4" Intake Resonator Pipe for the Factory (VGT) Turbo on 2020-2025 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD trucks dresses up your engine bay and removes the ugly stock plastic turbo resonator box. Reduces air restriction allowing more air flow to turbo. Removes silencers for more aggressive turbo and engine sound. Retains OEM air filter panel and filter box for ease of maintenance / serviceability. No tuning required, bolt on! Will fit on stock trucks with no other modifications necessary. Installs easily with basic hand tools. Replaces the following GM Part Numbers: 84841229, 84841225, 84262962. Wehrli Custom Fab Intake Resonator Pipe, 4in., 20-25 Duramax L5P OEM Air Box, WCFab Grey Intake Resonator Pipe, 4in., 20-25 Duramax L5P OEM Air Box, WCFab Grey
Manufacturer fitment & guides
Check WCF100720-GRY against the manufacturer’s application information below.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y
