2007.5-2010 LMM Duramax 4" Intake Kit with Air Box Stage 2

Stage 2 airflow for the LMM

This Wehrli kit replaces the restrictive plastic factory intake tube and air box on the 2007.5-2010 LMM with a fabricated aluminum tube, an aluminum air box and a dry filter. It pulls cooler air through the inner fender, and the 4 in. tube with smooth bends raises intake air speed and volume.

It also includes Wehrli's 4.8 in. cast aluminum inlet horn, which Wehrli calls the largest on the market. The horn removes a factory restriction to help spool and top-end power, drops the factory resonator for a cleaner look and stronger turbo sound, and works with stock or drop-in VGT turbos.

No tuning is required.

Who it's for

LMM owners who want more air into a stock or drop-in VGT turbo.

Key specs (per Wehrli)

What's included

• Aluminum intake tube, 4 in.
• Air box with lid
• Dry air filter and pre-filter cover
• 4.8 in. cast aluminum intake horn
• Silicone reducer boot, O-ring seal and stainless T-bolt clamps
• Install hardware; powder-coated finish

Fitment notes

• Fits 2007.5-2010 Chevrolet Silverado / GMC Sierra 2500 HD and 3500 HD with the 6.6L LMM Duramax. Supersedes WCF100638.
• California: Wehrli does not ship this part to California.

Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.