Wehrli Custom Fab Stage 2 High Flow Intake Bundle Kit for 2017-2019 Chevrolet/GMC 2500/3500 HD (6.6L L5P) - Gloss Black - WCF100441-GB

Fits select 2017-2019 Chevrolet Silverado and GMC Sierra 2500 HD / 3500 HD models (6.6L L5P Duramax).

The Wehrli Custom Fab (WCFab) Stage 2 High Flow Intake Bundle Kit is a comprehensive performance upgrade designed to eliminate the most restrictive components of the L5P Duramax air track. This kit replaces the factory 2.5-inch resonator-equipped hot-side pipe and the failure-prone plastic/rubber cold-side pipe with heavy-duty 14-gauge mandrel-bent aluminum tubing. The result is a significant increase in durability and airflow efficiency for your heavy-duty truck.

The system features a 4-inch aluminum intake pipe paired with a custom air box enclosure and a high-flow dry filter protected by a hydrophobic Outerwears pre-filter. For maximum sealing reliability under high boost, WCFab replaces the OEM clip ring design at the Y-bridge with a high-quality silicone boot and stainless steel T-bolt clamps. The 3.5-inch cold side pipe utilizes a CNC-machined flange with a double O-ring seal to prevent boost leaks, ensuring your engine receives consistent, pressurized air even in demanding conditions.

• Air Intake: 4-inch aluminum intake pipe with intake horn and surge ring
• Hot Side Pipe: 1-piece 3-inch diameter 14 ga. aluminum construction
• Cold Side Pipe: 3.5-inch diameter 14 ga. aluminum construction
• Air Box: Enclosed design with removable lid for easy filter inspection
• Sealing: CNC machined flange with double O-rings and stainless steel T-bolt clamps
• Finish: Durable Gloss Black powder coat
• Installation: True bolt-on design; retains factory sensors and requires no tuning
• Included: Air intake, air box, dry filter, pre-filter cover, intercooler pipes, silicone boots, and hardware
• MPN: WCF100441-GB