Will this fit a 2007 model year truck?

Check whether your 2007 is an LBZ or LMM engine. The LMM version began mid-2007 (often called 2007.5). Wehrli makes a separate kit for the 2006-2007 LBZ. Confirm your engine code before ordering.

Does this kit save money compared to buying the pieces separately?

Yes. Wehrli states the bundle saves up to $99 versus purchasing the Y-bridge, driver side pipe, and passenger side pipe individually.

Are the silicone boots and clamps reusable if I need to remove the pipes later?

The silicone boots and stainless T-bolt clamps are reusable. They can be loosened, removed, and reinstalled for maintenance or other work.

Specifications

Brand: Wehrli
Part #: WCF100324-GB
UPC: WCF100324-GB

Wehrli 07.5-10 GMC/Chevrolet 6.6L Duramax Stage 1 High Flow Intake Bundle Kit - Gloss Black

Name: Wehrli 07.5-10 GMC/Chevrolet 6.6L Duramax Stage 1 High Flow Intake Bundle Kit - Gloss Black
Brand: Wehrli
SKU: wehrli-wehrli-07-5-10-gmc-chevrolet-6-6l-duramax-stage-1-high-flow-intake-bundle-t14-582530
Price: 1826.75 USD
Availability: BackOrder

$1826.75

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2007.5-2010 GMC/Chevrolet 6.6L Duramax LMM. Stage 1 intake bundle replaces the Y-bridge and both intercooler pipes with larger, bolt-together components.

Key Features

Fits 2007.5-2010 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD with 6.6L LMM Duramax.
3 in. bolt-together Y-bridge flows 36% better than the factory slip-fit design, per Wehrli.
3 in. driver side pipe replaces the undersized 2.5 in. OEM tube.
3.5 in. passenger side pipe flows 47% better than stock. 14 ga. aluminum construction.
CNC machined flanges with double O-ring seals for boost-tight connections.
Retains factory throttle valve, grid heater, and EGR controls.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Moderate difficulty to install

Bolt-on installation with no tuning required, but involves removing factory intake tract and intercooler piping.

About this part

Product Details

Wehrli Custom Fab's Stage 1 intake bundle is their foundational airflow upgrade for the 2007.5-2010 LMM Duramax, and this version comes in Gloss Black powder coat for a clean, understated look. It targets the three weakest links in the factory intake tract: the slip-fit Y-bridge, the undersized driver side intercooler pipe, and the failure-prone plastic passenger side pipe.

The replacement Y-bridge is a 3-inch bolt-together design with CNC machined billet flanges and mandrel-bent tubing. Where the factory piece uses a slip fit that can separate under boost, Wehrli's design creates a sealed connection with the air inlet horn. The driver side intercooler pipe grows from 2.5 to 3 inches, dropping the reverse bead-roll turbo connection that blows off at above-stock pressures. On the passenger side, a 3.5-inch 14-gauge aluminum pipe with CNC flanges, double O-ring seals, and upgraded silicone boots replaces the original plastic component.

Flow gains are 36% on the Y-bridge and 47% on the cold side pipe compared to stock, per Wehrli. The kit retains factory throttle valve, grid heater, and EGR controls. No tuning is needed. All hardware included. Made in the USA.