Wehrli 17-19 Chevrolet L5P Duramax High Flow Intake Bundle Kit - Gloss Black

For 2017-2019 L5P Duramax owners looking to upgrade the full air path from filter to exhaust, this Wehrli Stage 3 bundle in Gloss Black puts it all in one box. It pairs their cold air intake and intercooler pipe upgrades with a 3.5-inch ceramic coated down pipe.

The intake assembly centers on a 4-inch aluminum pipe with an enclosed air box, dry filter, and Outerwears hydrophobic pre-filter. The intake horn is over an inch larger than stock and features a PCV port and surge ring, while 14-gauge mandrel-bent aluminum piping draws cold air from the hood ram air duct and inner fender. After the turbo, a one-piece 3-inch driver side intercooler pipe replaces the factory 2.5-inch two-piece resonator tube, and a 3.5-inch passenger side pipe with a CNC machined flange and double O-ring seal handles the cold charge.

On the exhaust side, the 3.5-inch down pipe is ceramic coated with heat wrap already installed. It replaces the crushed factory part and connects to the DOC outlet flange using the OEM 4-bolt pattern, with bungs for all factory sensors. All connections use silicone boots and stainless T-bolt clamps. No tuning needed. Made in the USA.