Wehrli Custom 2001-2016 Duramax 2" Stainless Driver Side Up Pipe for OEM or Wehrli Custom Manifold with Gaskets

Replace the light weight, leak prone Driver side OEM up pipe with this heavy duty 11 gauge 2" Stainless up pipe. HD Stainless Bellow that will not crack and leak like OEM. Increase Turbo spool up and decrease EGT's. Will work with ANY Turbo setup single or compound, compatible with factory exhaust manifold only. Includes Up Pipe Gaskets.

NOTE: This up pipe will ONLY fit with OEM exhaust manifold or WCFab Duramax Billet Exhaust Manifolds (WCF100363). 2007.5-2010 LMM Requires Coolant Bypass/Relocation Fitting WCF100798

Compatible with LB7, LLY, LBZ, LMM, and LML Duramax

Replaces the following GM Part Numbers: 98066019, 12637379, 12634564; 12624699; 12650925, 97223167