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3 Inch Extended-Length Down Pipe
The OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing and eventually blown head gaskets
The PPE Turbocharger Resonator Delete kit includes a high-quality Viton O-ring seal
the CNC machining compensates for casting variations
Up-Pipe for 2011-2016 GM 6.6L Duramax LML (For PPE Exh Man) Pacific Performance Engineering GMC 3 Inch Extended-Length Down PipeThis Up Pipe works with the PPE performance exhaust manifold. This Duramax Up pipe will give your GMC Sierra or Chevy Silverado significant reduction in exhaust back pressure and helping increase flow. This Free flowing stainless steel inner liner bellow improves the overall look and performance of your GM 6. 6L Duramax. The Up Pipe is made with stainless steel 11 gauge . 120 inch wall, 2 inch OD and will give faster turbo response with lower exhaust