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Wehrli GMC/Chevrolet LLY/LBZ/LMM Duramax 6.6L w S400 Single Turbo 3in Down Pipe - Black

Wehrli · New

Wehrli GMC/Chevrolet LLY/LBZ/LMM Duramax 6.6L w S400 Single Turbo 3in Down Pipe - Black

MPN WCF100811 · Store SKU wcfWCF100811

$259.00
IN STOCK1 ready to ship

Supplier stock checked 11/7/2026, 8:35:54 PM UTC. Adding a part does not reserve it.

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Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.

Product details

LLY/LBZ/LMM/LML Duramax 3" Down pipe for S400 turbo with 4.6" Diameter flat exhaust outlet flange (Half marmon). This down pipe mates to the exhaust system v-band flange with OEM clamp for easy install. Must be used with a T4 pedestal between 5.5-6.5" tall. Wehrli Custom Fab Down Pipe, 3in., for LLY/LBZ/LMM/LML Duramax w S400 Single Turbo Down Pipe, 3in., for LLY/LBZ/LMM/LML Duramax w S400 Single Turbo

Manufacturer fitment & guides

Check WCF100811 against the manufacturer’s application information below.

A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.

Part-specific notes

  • Not CARB approved. Destination and intended-use restrictions must be checked before sale.
  • Emissions acknowledgement required before purchase.
  • California Proposition 65: Y
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