HAMILTON CAMS 07-S-003 103# VALVE SPRINGS FOR 98.5–18 CUMMINS 5.9L/6.7L 24V

Hamilton 103 lb seat pressure springs are a proven upgrade for high boost/drive pressure and elevated RPM on 24-valve Cummins. They reduce valve float and reversion while maintaining streetable manners on tuned daily/tow trucks.

Fitment

• 1998.5–2002 Ram 2500/3500 5.9L Cummins 24V (VP44)
• 2003–2007 Ram 2500/3500 5.9L Cummins 24V (Common Rail)
• 2007.5–2018 Ram 2500/3500/4500/5500 6.7L Cummins 24V

Tech note: 103# springs are commonly used up to ~4,500 RPM. For sustained higher RPM or high-lift cams, pair with tool-steel retainers.

What’s Included

• (24) Hamilton Cams 103# valve springs for 24-valve Cummins

Retainers are not included—see recommended items below.

Cross-Reference / Alternatives

• Hamilton Tool-Steel Retainers (recommended above ~4,500 RPM): 07-S-004
• Hamilton Competition 110# Springs (more RPM/boost headroom): 07-S-110
• CPP 115# 24V Valve Springs (CPP alternative): CPP-115#
• Fleece 24V Spring & Retainer Set (kit w/ retainers): FPE-34797
• Industrial Injection 95 lb 24V Springs (milder option): PDM-160-1484S-24

Helpful Tools & Related Parts

• CPP 24V Valve Spring Compressor Tool: CPP-VST-24V
• Hamilton 12mm Extreme Duty Pushrods: 07-P-004
• Hamilton Billet Valve Bridges (24V): 07-B-001
• Hamilton 178/208 Cam Combo (popular match): 07-CC-24V178

FAQ

If you’re running more than ~35 psi boost or elevated drive pressure, or you’re adding RPM with a cam/tuning, 103# springs help maintain valve control and reduce float.

They’re strongly recommended for sustained operation beyond ~4,500 RPM or with high-lift cams. See Hamilton 07-S-004 retainers linked above.

Yes. They pair well with stock cams on higher-boost trucks and also with performance grinds that demand more control.

Set of 24 for 24-valve cylinder heads.

Use a 24V-specific spring compressor. We stock an easy, affordable option linked above.