Product Description
Overview
The Wehrli Custom Fab WCF100096 Turbo Resonator Billet Block Off Plate is a clean, simple way to get rid of the bulky factory plastic turbo resonator on your 2011–2016 6.6L LML Duramax while keeping the factory intake path and emissions equipment intact. This CNC machined 6061 billet aluminum plate replaces the resonator at the turbo, giving your engine bay a cleaner, high-end appearance and a more direct airflow path.
Finished in a sleek black anodized coating with the engraved Wehrli Custom Fabrication logo, this plate is built to handle harsh under-hood conditions. It installs in minutes using the supplied stainless hardware and requires no custom tuning or additional modifications – truly a bolt-on upgrade.
Features & Benefits
- CNC machined 6061 billet aluminum for strength, precision, and long-term durability.
- Black anodized finish with engraved Wehrli logo for a premium, OEM-plus look.
- Deletes the factory plastic turbo resonator for a cleaner, less cluttered engine bay.
- Direct bolt-on install – no tuning required and no additional parts needed.
- Emissions-friendly design that retains factory emissions equipment*
- Includes stainless steel mounting hardware to resist rust and corrosion.
- Designed and machined in the USA.
*Always verify local and state emissions regulations for on-road use.
What's Included
- (1) Wehrli WCF100096 turbo resonator billet block off plate
- (1) Stainless mounting hardware set
- Installation instructions (via manufacturer resources or online)
Vehicle Fitment – 2011–2016 6.6L LML Duramax
This turbo resonator block off plate is designed specifically for LML Duramax trucks equipped with the factory turbo resonator on the compressor outlet.
- 2011–2016 Chevrolet Silverado 2500HD 6.6L LML Duramax
- 2011–2016 Chevrolet Silverado 3500HD 6.6L LML Duramax
- 2011–2016 GMC Sierra 2500HD 6.6L LML Duramax
- 2011–2016 GMC Sierra 3500HD 6.6L LML Duramax
Specifications
| Item | Specification |
|---|---|
| Brand | Wehrli Custom Fab (WCFab) |
| Part Number | WCF100096 |
| Application | Turbo resonator block off plate for 2011–2016 6.6L LML Duramax |
| Material | CNC machined 6061 billet aluminum |
| Finish | Black anodized with engraved Wehrli logo |
| Hardware | New stainless steel mounting hardware included |
| Installation | Bolt-on; replaces factory turbo resonator; no tuning required |
| Emission Notes | Emissions-friendly design; verify local laws for street use |
| Country of Origin | USA (CNC machined) |
Recommended Companion Products
Pair this resonator delete with other Wehrli LML upgrades available at CPP Diesel:
- WEHRLI CUSTOM FAB WCF100024 VALLEY CP3 BLOCK OFF PLATE FOR 01-16 CHEVROLET 6.6L DURAMAX – cleans up the CP3 valley area on Duramax platforms.
- WEHRLI CUSTOM FAB WCF100353 11-16 CHEVROLET 6.6L LML DURAMAX DRIVER SIDE 3IN INTERCOOLER PIPE – improves airflow and durability on the cold side.
- WEHRLI CUSTOM FAB WCF100676 LML DURAMAX TWIN TURBO PEDESTAL – foundation for future compound turbo upgrades.
- WEHRLI CUSTOM FAB WCF100121 3IN DOWN PIPE (V-BAND STYLE) FOR 11-15 CHEVROLET 6.6L LML DURAMAX – reduces backpressure and helps EGT control.
- WEHRLI CUSTOM FAB WCF100704 11-15 CHEVROLET 6.6L LML DURAMAX 3IN STAINLESS DOWN PIPE (V-BAND STYLE) – stainless upgrade for long-term durability.
Installation Notes
- Intended to replace the OEM turbo resonator on the compressor outlet of the LML Duramax.
- Truck should be cool before working near the turbocharger and intake plumbing.
- Basic hand tools are typically all that is required.
- No PCM/ECM tuning is required for proper operation.
- Re-check hardware torque after a few heat cycles.
FAQ
Will this turbo resonator block off plate increase turbo or intake sound?Most owners notice a slight increase in turbo whistle and intake sound because the hollow plastic resonator is removed, but it is typically subtle and still very street-friendly. The main benefit is a cleaner look and one less plastic piece that can crack or leak.
Do I need custom tuning or other performance parts to run this plate?
No. The WCF100096 is designed as a direct bolt-on for otherwise stock trucks and does not require any custom tuning. It works great on stock trucks and alongside other bolt-on upgrades like intercooler pipes, downpipes, and turbo kits.
Is this part emissions compliant?
The plate is marketed as an emissions-friendly design that does not remove sensors or core emissions equipment. However, emissions regulations vary by region, especially for on-road use, so you should always verify local and state laws before installation.
Will this help performance or is it mostly cosmetic?
The primary benefits are improved durability over the factory plastic resonator and a cleaner, more professional engine bay appearance. Any airflow change is minor, but removing a resonator cavity can help reduce the chance of leaks or failures at higher boost levels.
Does it work with other Wehrli turbo and intercooler upgrades?
Yes. This resonator block off plate is a natural match for Wehrli LML intercooler piping, downpipes, and turbo kits. If you are planning a full Wehrli charge-air or turbo system, this is a great supporting piece to install at the same time.
