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In other words
The two-inch-diameter PPE up-pipes have a 50% larger flow path than the stock ones
PPE High-Flow Manifold is made from high-sil moly cast iron
Molybdenum dry coating adds wear resistance and endures extreme heat cycles
006'' to +0
2002-2004 (CA LB7) GM 6.6L Duramax High-Flow Exhaust Manifold and Up-Pipe Kit Finish:Silver Ceramic Coating In other wordsHigh Flow Exhaust Manifold and Up Pipe Kit for 2002 2004 (CA LB7) GM 6. 6L Duramax PPE High Flow Manifold is made from high sil moly cast iron. 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
