Replace the lightweight, leak-prone passenger side OEM up pipe with this heavy-duty 11 gauge 2" Stainless up pipe. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo spool-up and decrease EGTs. This up pipe is built with more sweeping, less aggressive bends for use in COMPOUND / TWIN TURBO STYLE APPLICATIONS ONLY. It WILL NOT clear a conventional downpipe behind the engine off of the turbocharger in the valley. - - Compatible with only factory exhaust manifolds or WCFab Duramax Billet Exhaust Manifolds (WCF100363). - - NOTE: This up pipe will ONLY fit with OEM exhaust manifold.. Full flow design eliminates clearance dent and tight bends required for engine valley mount single turbo down pipes. Wehrli 01-04 Chevrolet 6.6L Duramax LB7 2in Stainless Passenger Side Up Pipe w/Gaskets (Twin Turbo). Heavy Duty 2" Passenger Side Up Pipe Passenger Side Up Pipe for Compound / Twin Turbo Applications. Wehrli Custom Fab Passenger Up Pipe w/ Gaskets (Twin Turbo), 2in, 01-04 LB7 Duramax, Stainless. Passenger Up Pipe w/ Gaskets (Twin Turbo), 2in, 01-04 LB7 Duramax, Stainless. WILL NOT CLEAR a Conventional Single Turbo down pipe!. Fully TIG Welded 11 GA Stainless Steel Construction. Pass Up Pipe (TTurbo) 01-04 LB7 Dmax SS. P UpPipe TT 01-04 SS. Turbocharger Up Pipe. Up Pipe Gaskets (2). Made in USA

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