~(1 lbs. 2X2X2)~ Cummins 99-18 Single 103 Valve Spring 103 Valve Spring - Single one

The Hamilton Cams 07-S-003 valve springs are designed for 1998.5-2024 Dodge 5.9L/6.7L Cummins engines. Stock springs have 78-82 lbs of seat pressure, which may not adequately control the valvetrain under high boost or drive pressure conditions (over 35 psi). This can lead to issues like reversion, which negatively impacts power potential.

These Hamilton springs address this by providing increased seat pressure and a moderate nose pressure (recently lowered from 220lb to 180lb) to ensure proper valvetrain control up to 4500 rpm. Using these springs is recommended for maintaining cam and tappet longevity, especially when running aftermarket cams.