Fits: 2011 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LML Duramax Diesel

Replace the lightweight 16G, leak prone, 1 5/8" OEM passenger side up pipe on your 2011-2016 6.6L LML Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck with these heavy duty 11 gauge 2" Stainless up pipe kit. HD Stainless Bellows that will not crack and leak like OEM. Improves exhaust flow which increases turbo spool-up and decreases EGT's. Excellent upgrade for hard working, heavy towing trucks or high performance applications equipped with larger upgraded turbocharger and emissions compliant tuning.

Features:

• Fully TIG Welded 11 GA Stainless Steel Construction
  
• Ductile Iron Cast EGR Connection w/ EGT Sensor Port
  
• Compatible with OEM & WCFab Turbo Down Pipes
  
• NO TUNING REQUIRED
  
• Made in USA

Includes:

• Passenger Side Up-Pipe
• Gaskets

Replaces:

• GM Part# 12657012, 12638302, 12644640

Notes:

• Will not work with aftermarket manifolds which alter the exhaust outlet location. 
• Not compatible with LGH Duramax Equipped Express or Savana models. 
• NOT LEGAL FOR SALE OR USE IN CALIFORNIA. THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. § 7522(A)(3))
  
• This product is ONLY designed for closed course racing where it is legal to do so. Any other use will be in violation of local, state, and federal laws. We are not responsible for unlawful use of this product.