Description
The Hamilton Cams 07‑S‑003 Valve Springs are heavy‑duty replacement springs for 1998.5–2018 5.9 L / 6.7 L 24‑valve Cummins 5.9L/6.7L 24‑Valve diesel engines. Designed to replace stock springs when your build goes beyond stock boost or performance levels, they ensure the valvetrain remains firmly controlled — reducing risks of valve float or reversion under high boost or elevated RPM.
Features:
- 103 lb seat pressure valve springs (upgraded over stock)
- Complete set for full 24‑valve engine (intake + exhaust springs)
- Reliable valvetrain control under high boost or drive pressure conditions (ideal when over 35–50 psi boost)
- Rated for safe operation up to ~4500 RPM (with stock cam/valvetrain)
- Helps prevent valve float, valve reversion, and associated power loss or engine damage under demanding conditions
*Lately we have seen cams damaged when customers run cheaper aftermarket springs. We ONLY offer warranty on our cams IF you run our springs and tappets. These springs are rated for 4500 rpm. Anything over that will require #110*