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7L 4" Cat & DPF Race Pipe w/ Muffler (421036)
and a reduced overlay thickness to prevent overlay fatigue
engine radiators or other universal applications
Although this is considered a drop in cam it is important to check clearances (You can use our clearance calculator to make it a little easier)
2001-2016 Duramax PPE Valve & Spring Kit (110090080) 2011 - 2016 GM Engine Components 7L 4" Cat & DPF2001 2016 Duramax PPE Valve & Spring Kit (110090080) The intake exhaust valve, valve seal, spring, spring seat retainer keeper kit comes standard with each PPE Duramax Cast Iron Cylinder head. This kit is specially designed for the GM 6. 6L Duramax and contains the components for both driver and passenger side cylinder heads. The valves are fully nitridated and reinforced for superior durability and reliability. The tapered valve springs higher spring
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