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you can customize your transmission settings to match your driving style
providing superior clamping force and durability
2003-2007 Cummins 5
For dedicated tow rigs and daily drivers
2003-2010 Powerstroke 6.0/6.4 Performance HD Valve Spring Set of 32 (360-1021) KC Turbo View Average Injector Flow Data2003 2010 Powerstroke 6. 0 6. 4 Performance HD Valve Spring Set of 32 (360 1021) Upgrade your valve springs with these performance springs that are designed and manufactured using the Highest Quality Grade Wire, resulting in exceptional endurance of high loads produced by racing cams. Our Valve Springs are heat treated and stress relieved to increase Spring Performance, longevity and provide the stability needed for High Loads and RPM. Treated with an