Chevrolet Duramax Performance Air Intake - Wehrli - High Flow Intake Bundle Kit Stage 3 - Grey - '17-'19. A complete Stage 3 high-flow kit for 2017–2019 L5P Duramax trucks combining intake, intercooler piping, and downpipe components designed for improved airflow and durability.

This Wehrli WCFab Stage 3 bundle replaces restrictive factory plastic parts with heavy-duty 14 ga. aluminum piping, a 4" fabricated intake pipe and enclosure, and upgraded intercooler and exhaust components. The kit includes a dry filter with Outerwears pre-filter cover, reinforced silicone boots, stainless steel t-bolt clamps, and a CNC-machined flange with double O-rings to reduce boost leaks. The driver (hot) and passenger (cold) intercooler pipes are upsized to 3" and 3.5" respectively, and the bundled 3.5" downpipe comes ceramic-coated and heat-wrapped. The design improves intake volume and velocity, reduces weak factory joints, and is offered in WCFab grey powder coat. Bolt-on installation — no tuning required for fitment — and made in the USA.

Features

• 4" fabricated aluminum intake pipe, intake horn, and sealed air box with dry filter
• 3" driver-side & 3.5" passenger-side mandrel-bent intercooler pipes with reinforced boots
• 3.5" ceramic-coated, heat-wrapped downpipe with OEM sensor bungs
• CNC-machined flange with double O-ring, stainless t-bolt clamps, silicone boots
• Outerwears hydrophobic pre-filter cover and custom WCFab grey powder coat

If you have questions or want help choosing the right parts, call us directly — Austin, TX: 512-982-9393 (TX); Los Angeles, CA area: 562-981-6800 (CA). We offer installation and customization services at both locations in Austin, Texas and the Los Angeles, California area. If you are considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov