2020-2026 L5P Duramax Stage 1 High Flow Intake Bundle Kit

Stock 2020–2026 L5P hot-side pipes are two-piece 2.5" with a resonator joint, and the cold side is plastic/rubber that fails under boost. Wehrli’s Stage 1 bundle replaces both with a one-piece 3" hot-side and 3.5" cold-side mandrel-bent aluminum setup — CNC flange, billet adapter with double O-rings, and T-bolt clamped silicone boots that hold pressure without a tune on a stock truck.

What you get: hot + cold intercooler pipes, boots, clamps, O-rings, and outlet clip hardware, powder-coated in your color choice. Bundle saves vs buying pipes separately. Factory connection points and sensors stay in place.

Notes:

• Fits 2020–2026 Chevy/GMC 2500/3500 HD L5P Duramax
• SEMA-certified emissions-compliant (Cert No. SC-WCF01-0176)
• Step up later with Stage 2 (adds intake/air box) or Stage 3 bundles — we stock the family
• Cannot ship to California (manufacturer restriction)

Popular colors often ship in a few business days; custom powder has a longer lead. Idaho Falls shop installs available when bay time allows.

Call 208-542-7793 with year/make/model to confirm Stage 1 vs Stage 2 for your build.

Emissions-compliant performance only — Powertech Diesel does not sell deletes or defeat devices.