2011-2024 Powerstroke 6.7L Manton Conical Valve Spring Kit (D-105-6.7SF) 2001 - 2004 GM Fuel Systems Smooth mandrel bends will give

Smooth mandrel bends will give you the best flowing Ford down pipes in the industry

- No more than 1” of tire poke

and less current is more

The Super Damper provides balanced dampening of torsional crankshaft vibrations at all RPM

less breakdowns and provides excellent pulling power

2011-2024 Powerstroke 6.7L Manton Conical Valve Spring Kit (D-105-6.7SF) 2001 - 2004 GM Fuel Systems Smooth mandrel bends will give2011 2024 Powerstroke 6. 7L Manton Conical Valve Spring Kit (D 105 6. 7SF) New Conical Valve Spring for the Ford 6. 7L Powerstroke . Designed to allow for increased Lift and Boost while providing better total valve control. Sold as a set of 32.