Wehrli High Flow Bundle Kit Stage 1 — Bronze Chrome for 2017-2019 Chevrolet L5P Duramax. This Stage 1 air intake/intercooler pipe bundle replaces the factory weak points between the turbo and engine to improve airflow, throttle response, and turbo spool characteristics without requiring tuning.

Designed as a direct bolt‑on for stock trucks, the kit swaps the OEM 2.5" driver-side and plastic/rubber passenger-side pipes for heavy‑duty, single‑piece aluminum pipes sized 3.0" (hot side) and 3.5" (cold side). Constructed from 14‑ga. aluminum with smooth mandrel bends and finished in Wehrli’s custom powder coat Bronze Chrome, the assembly retains factory connection points and sensors while replacing the clip ring Y‑bridge with high‑quality silicone boots and stainless T‑bolt clamps. The passenger side includes a CNC‑machined flange with double O‑rings for improved sealing under higher boost pressures. Installs with basic hand tools and is made in the USA.

Features

• 3.0" driver (hot) and 3.5" passenger (cold) intercooler pipes
• 14‑ga. aluminum construction with mandrel bends
• Reinforced silicone boots and stainless steel T‑bolt clamps
• CNC machined flange with double O‑ring seal
• Custom Bronze Chrome powder coat finish; retains factory sensors
• Bolt‑on fit for 2017–2019 L5P Duramax; no tuning required

This Wehrli Stage 1 kit is built for enthusiasts who want a durable, higher‑flow path between turbo and engine while maintaining factory interfaces. 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 of our locations in Austin, Texas and the Los Angeles, California area.

If you are thinking about purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

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