Wehrli 11-16 Duramax LML Stainless 2in Up Pipe Kit w/ Gaskets

Replace the lightweight 16G, leak prone, 1 5/8" OEM driver and passenger side up pipes on your 2011-2016 6.6L LML Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck with this 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. Compatible with OEM style exhaust manifolds or WCFab Billet Exhaust Manifold (Part Number WCF100363). INCLUDES GASKETS! - NO Tuning required, bolt on! -Will fit on stock truck no other modifications or upgrades necessary! Replaces the following GM part numbers: 12657012, 12638302, 12644640, 12650925, 12637379. Will not work with aftermarket manifolds which alter the exhaust outlet location. Not compatible with LGH Duramax Equipped Express or Savana models.

This Part Fits:

Year	Make	Model	Submodel
2015-2016	Chevrolet	Silverado 2500 HD	High Country
2011-2016	Chevrolet	Silverado 2500 HD	LT
2011-2016	Chevrolet	Silverado 2500 HD	LTZ
2011-2016	Chevrolet	Silverado 2500 HD	WT
2015-2016	Chevrolet	Silverado 3500 HD	High Country
2011-2016	Chevrolet	Silverado 3500 HD	LT
2011-2016	Chevrolet	Silverado 3500 HD	LTZ
2011-2016	Chevrolet	Silverado 3500 HD	WT
2015-2016	GMC	Sierra 2500 HD	Base
2011-2016	GMC	Sierra 2500 HD	Denali
2011-2016	GMC	Sierra 2500 HD	SLE
2011-2016	GMC	Sierra 2500 HD	SLT
2011-2014	GMC	Sierra 2500 HD	WT
2015-2016	GMC	Sierra 3500 HD	Base
2011-2016	GMC	Sierra 3500 HD	Denali
2011-2016	GMC	Sierra 3500 HD	SLE
2011-2016	GMC	Sierra 3500 HD	SLT
2011-2014	GMC	Sierra 3500 HD	WT