2006-2010 LBZ/LMM Duramax 3.5" Passenger (Cold) Side Intercooler Pipe Kit

A cold side pipe that holds boost

Wehrli replaces the failure-prone factory LBZ/LMM passenger (cold) side pipe with a larger one-piece 3.5 in. pipe in 14 ga aluminum, which Wehrli says flows 47% better than stock.

Its CNC-machined flanges use twin O-ring seals, it comes with new wire clip rings for both slip flanges, and a heavy-duty silicone double-hump boot with stainless T-bolt clamps handles more boost than the factory parts.

Wehrli says the better flow between the turbo and engine improves efficiency, throttle response and spool. It fits stock trucks with no other changes or tuning and installs with basic hand tools.

Who it's for

LBZ/LMM owners, stock or modified, who are tired of blown cold side boots and boost leaks.

Key specs (per Wehrli)

What's included

• 3.5 in. cold side intercooler pipe
• Silicone double-hump boot and stainless T-bolt clamps
• O-rings and new wire clip rings; powder-coated finish

Fitment notes

• Fits 2006-2010 Chevrolet Silverado / GMC Sierra 2500 HD and 3500 / 3500 HD with the 6.6L LBZ or LMM Duramax.
• Replaces GM part number 15102148.
• CSF aftermarket intercoolers need the outlet lip modified or ground for installation.
• California: Wehrli does not ship this part to California.

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