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055 Bore (197952455)
Ideal for flat tappet and aggressive roller valve trains
and the latest original equipment production technology is used
Air-Boss 67 elevated intake plenums are compatible with all stock style intake manifolds and the increased airflow provided by the Air-Boss 67 greatly reduces EGT's
2007-2010 Duramax LMM Performance Aluminized 4" DPF Back Exhaust (S6026P) 2007.5 - 2009 Dodge Transmission & Drivetrains 055 Bore (197952455)Built from heavy duty aluminized steel MBRP's performance Series exhaust systems offer a value price without compromising on the quality build to every component. While the seams are a major point of rust through with some budget systems, MBRP's fully sealed tubing adds years to your system. Constructed to the same specifications as our top of the line Pro Series. we back this with a 1 year warranty. MBRP exhaust systems are as much fun to install as