2001-2016 Duramax S400 3" Down Pipe (WCF100811)

3" down pipe for an S400 turbo on a 2004.5-2016 LLY, LBZ, LMM or LML Duramax. It hangs off the 4.6" flat half-marmon outlet flange on the turbo and drops to the exhaust system V-band, reusing the OEM clamp, so the hot side of an S400 swap bolts together without cutting or welding.

Built for T4 pedestals between 5.5" and 6.5" tall. The pipe is high-temp coated and ships with the V-band clamp plus heat wrap and clamps.

Part Number: WCF100811

• 3" down pipe for the S400 4.6" flat (half marmon) outlet flange
• Mates to the exhaust V-band with the OEM clamp
• V-band clamp, heat wrap and clamps included
• High-temperature coating
• For T4 pedestals 5.5" to 6.5" tall
• Made in USA

• Pedestal height must be between 5.5" and 6.5" for the pipe to line up.
• LB7 trucks use WCF100878.

Don't see your question? Ask us anything about this product.