Product Description
Upgrade valve control and rpm stability on your 12-valve Cummins with the Hamilton Cams 07-S-001 165# Beehive Valve Springs. Ideal for performance street builds, towing with bigger turbos, or cam upgrades where additional seat/open pressure and improved harmonics are required for safe boost and rpm. Made for the 1989–1998 5.9L Cummins 12V platform.
Fitment
- 1989–1998 Dodge Ram 2500/3500, 5.9L Cummins 12-valve (VE, P-pump)
- Works with OEM-style valves, retainers, and keepers (verify installed height and coil bind on non-OEM setups)
What’s Included
- (Set) 165# beehive valve springs for all 12V cylinders
Recommended Supporting Parts
- Hamilton Extreme Duty Pushrods (12V): 07-P-002
- Hamilton 1.45" Tappets (pair with heavier springs): 07-T-001 or 07-T-002 DLC
- Hamilton Bolt-On Cam Retainer (thrust control): 07-C-002
Cross-Reference / Alternatives
- Hamilton 12V Dual Valve Spring Set (higher control for more rpm/cam): 07-S-002
- CPP Diesel 60 lb Valve Springs (budget 12V upgrade): CPP C14010
- Hamilton Large Valves (pair with cams/port work): 07-H-002
- Hamilton 12V Camshaft Combos (188/220 or 178/208 street sets): 12V Camshaft Category
Installation Notes
- Always measure installed height, check coil bind and retainer-to-seal clearance
- Verify pushrod length and lifter condition with higher spring pressures
- Recommended to use new keepers/locks when changing springs
FAQ
Who should run 165# beehive springs on a 12V?Perfect for trucks with larger turbos, higher boost, or a performance cam that need improved valve control without jumping straight to duals. They improve stability and reduce float at elevated rpm compared to stock springs.
Do I need upgraded tappets with these springs?Stronger springs increase valvetrain loads. Hamilton 1.45" tappets (standard or DLC) are a proven upgrade when running heavier spring pressures or more aggressive cam profiles.
What if I plan to spin more rpm or run big cam timing?Consider the Hamilton 07-S-002 Dual Valve Spring Set for additional control and safety margin at higher lift and rpm.
Which small parts should I refresh during the swap?We recommend fresh keepers and to inspect or replace retainers as needed. See M-3900250 keepers in our catalog.
