2011-2016 LML Duramax 4" Cold Air Intake Kit with Air Box

More air for the LML

This Wehrli kit replaces the restrictive plastic factory intake tube and air box on the 2011-2016 LML with a fabricated 14 ga aluminum tube, a 10 ga aluminum air box and a dry filter.

It pulls cooler air in through the inner fender, and the 4 in. tube with smooth bends raises intake air speed and volume. Wehrli says that means more horsepower and torque, quicker throttle response, cooler intake temperatures and a stronger turbo sound.

The air box lid comes off for an easy look at the filter, and the water-shedding pre-filter helps keep dirt away from the MAF sensor, turbo and engine.

Wehrli measured a 37% airflow gain over stock.

Supersedes WCF100337. It is not compatible with the discontinued WCF100641, WCF100691 or WCF100716 unless the truck has a compatible aftermarket intake horn.

Who it's for

LML owners who want a bolt-on intake upgrade.

Key specs (per Wehrli)

What's included

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

Fitment notes

• Fits 2011-2016 Chevrolet Silverado / GMC Sierra 2500 HD and 3500 HD with the 6.6L LML Duramax.
• California: Wehrli does not ship this part to California.

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