Specifications
- Brand
- Wehrli
- Part #
- WCF100438-BC
- UPC
- WCF100438-BC

Wehrli 2007.5-2010 Chevrolet Duramax 6.6L LMM Stage 2 High Flow Intake Bundle Kit - Bronze Chrome
$2723.53
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Fits 2007.5-2010 Chevy/GMC 2500HD & 3500HD with 6.6L LMM Duramax. Stage 2 intake bundle in Bronze Chrome with Y-bridge, intake pipe, and intercooler piping.
Key Features
- Fits 2007.5-2010 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD with 6.6L LMM Duramax.
- 4 in. aluminum intake pipe with enclosed air box, dry filter, and Outerwears hydrophobic pre-filter cover.
- 4.8 in. turbo intake horn with PCV port -- 20% airflow improvement over factory.
- 3 in. two-piece Y-bridge with upper crossover and lower intercooler pipes -- 36% flow improvement.
- 3 in. hot side and 3.5 in. cold side intercooler pipes; cold side flows 47% better than factory.
- CNC machined flanges with double O-ring seals eliminate boost leaks.
⚠️ 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
Moderate difficulty to install
Bolt-on install with standard hand tools; expect 3-5 hours covering intake, intercooler pipes, and Y-bridge.
Product Details
Your 2007.5-2010 LMM Duramax was built to work, but the factory intake tract was built to a budget. This Wehrli Stage 2 High Flow Intake Bundle Kit in Bronze Chrome replaces every weak link from air filter to engine with properly sized aluminum components -- and saves over $196 versus piecing it together part by part.
Intake Assembly
A 4 in. aluminum intake pipe with enclosed 14 ga. air box draws cold air through the inner fender, paired with a dry filter and Outerwears hydrophobic pre-filter cover to protect the MAF sensor. The 4.8 in. turbo intake horn flows 20% better than the factory piece and produces a more aggressive turbo sound. All piping uses smooth mandrel bends to keep airflow turbulence to a minimum.
Intercooler Pipes and Y-Bridge
The restrictive 2.5 in. factory hot side pipe and leak-prone plastic cold side pipe are replaced by Wehrli's one-piece 3 in. hot side and 3.5 in. cold side aluminum pipes. The cold side flows 47% better than stock. CNC machined flanges with double O-ring seals and upgraded silicone boots are rated for higher boost pressures, ending the blown-boot failures these trucks are known for.
Wehrli's 3 in. two-piece Y-bridge completes the tract, replacing the slip-fit OEM unit that blows apart under boost. Bolt-together construction with CNC billet flanges flows 36% better than stock while retaining factory grid heater and EGR connections. No tuning required. Bronze Chrome powder coat finish adds a distinctive look under the hood.
Specifications
- Brand
- Wehrli
- Manufacturer Part #
- WCF100438-BC
- UPC
- WCF100438-BC
Frequently Asked Questions
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