GM 6.6L Duramax High-Flow Exhaust Manifolds and Up-Pipes Kits-116111000 GM Colorado/Canyon " This forged steel part is

This forged steel part is equipped with a big 7/8 inch bolt assembly and replaceable dual bearings

If you want more air

Part Number: 22400

Includes commonly sourced water separator

Part Number: 1047083

GM 6.6L Duramax High-Flow Exhaust Manifolds and Up-Pipes Kits-116111000 GM Colorado/Canyon " This forged steel part isPPE High Flow Manifolds are made from cast, high sil moly. The PPE Up Pipe bellows are internally sleeved, made from aircraft grade 304 stainless steel, and designed with increased inner diameter for higher flow. The entire Manifold and Up Pipe exhaust system are designed to maximize power and flow characteristics, lower exhaust gas temperatures (EGTs) and accelerate turbo spool up while increasing power, fuel economy, and maintaining reliability.