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which is better suited to take the heat
7L P1 4" Turbo Back Exhaust w/ Muffler (C6126P)
Incorrect adjustments can affect valve lift and performance
Replaces Cummins part number 4935981 on cylinder 1
2001-2016 Duramax Manton Conical Valve Spring Kit (D-105-KIT-Dmax) 1994 - 2000 GM Exhaust Systems which is better suited to2001 2016 Duramax Manton Conical Valve Spring Kit (D 105 KIT Dmax) Manton proudly presents a high performance valve spring assembly for Duramax platforms. This kit ensures superior valvetrain stability with springs, billet steel retainers, chromoly spring cups, and valve locks. It suits applications from stock rebuilds to race setups. We engineered these springs to handle high boost and increased RPM capability. We optimized the spring shape for