Product Description
The HAMILTON CAMS 07-P-004 EXTREME DUTY 12MM PUSHRODS are engineered for Cummins owners who demand maximum valvetrain strength and reliability. Designed for 1998.5–2018 24-valve Cummins 5.9L and 6.7L engines, these pushrods are the next step beyond standard heavy-duty pushrods and are ideal for high-boost, high-horsepower, towing, competition, and performance street applications.
Featuring a massive 12mm diameter and thick .120-inch wall construction, the 07-P-004 pushrods are significantly stronger than factory 3/8-inch pushrods and even exceed the strength of many aftermarket 7/16-inch alternatives. Hamilton's proven 3-piece chromoly design delivers exceptional stiffness and durability while maintaining accurate valve motion under extreme cylinder pressures.
With an impressive buckling strength of approximately 6,600 lbs compared to roughly 1,780 lbs for OEM pushrods, these Extreme Duty pushrods help prevent pushrod deflection, maintain proper cam timing, preserve valve lift, and reduce valvetrain instability in engines producing over 500 horsepower. Tested in applications exceeding 3,000 horsepower, they are trusted by performance builders throughout the diesel industry.
FEATURES
- Extreme Duty 12mm pushrod upgrade
- Fits 1998.5–2018 Cummins 24-valve engines
- Massive 12mm diameter construction
- .120-inch wall thickness
- Heavy-duty 3-piece chromoly design
- Approximately 6,600 lb buckling strength
- Maintains accurate valve timing under load
- Reduces pushrod flex and valvetrain deflection
- Recommended for engines exceeding 500 HP
- Tested in applications exceeding 3,000 HP
- Direct replacement for factory pushrods
- Made in the USA
FITMENT
- 1998.5–2002 Dodge Ram 2500/3500 5.9L Cummins 24V
- 2003–2007 Dodge Ram 2500/3500 5.9L Cummins Common Rail
- 2007.5–2018 Ram 2500/3500 6.7L Cummins
- 2008–2018 Ram 4500/5500 6.7L Cummins
- 24-Valve Cummins engines only
WHAT'S INCLUDED
- (12) Hamilton Cams 07-P-004 Extreme Duty 12mm Pushrods
CROSS-REFERENCE AND RELATED PRODUCTS
- Hamilton 07-S-003 103# Valve Springs
- Hamilton 07-S-004 Tool Steel Retainers
- Hamilton 07-T-001 Tappets
- Hamilton 07-T-002 DLC Billet Tappets
- Hamilton 07-CC-24V178 178/208 Camshaft Combo
- Hamilton 07-CC-24V188 188/220 Camshaft Combo
- Hamilton 07-C-178/208 Cast Camshaft
- Hamilton 07-C-188/220 Cast Camshaft
SPECIFICATIONS
- Manufacturer: Hamilton Cams
- Part Number: 07-P-004
- UPC: 857340008544
- Engine Compatibility: Cummins 5.9L & 6.7L 24-Valve
- Pushrod Diameter: 12mm
- Wall Thickness: .120"
- Construction: 3-Piece Chromoly
- Buckling Strength: Approximately 6,600 lbs
- OEM Buckling Strength Comparison: Approximately 1,780 lbs
- Recommended Power Level: 500+ HP
- Quantity Included: Set of 12
- Country of Origin: USA
FAQ
Why should I upgrade to Hamilton 12mm pushrods?
Factory pushrods can flex or bend under high cylinder pressure, causing lost valve lift and inaccurate cam timing. Hamilton's 12mm pushrods dramatically reduce deflection and maintain valvetrain stability.
How strong are these pushrods?
The 07-P-004 pushrods offer approximately 6,600 lbs of buckling strength compared to roughly 1,780 lbs for OEM pushrods.
What horsepower level are these designed for?
Hamilton recommends these pushrods for engines producing over 500 horsepower, although they have been successfully tested in builds exceeding 3,000 horsepower.
Will these work with a stock camshaft?
Yes. These pushrods can be used with stock or aftermarket camshafts and are commonly installed before major power modifications.
Do these require special valve springs?
No, but Hamilton recommends pairing them with upgraded valve springs and retainers when running increased boost, aftermarket tuning, or performance camshafts for maximum reliability.
Are these a direct replacement for factory pushrods?
Yes. The 07-P-004 pushrods are designed as a direct-fit replacement for OEM pushrods in 1998.5–2018 Cummins 24-valve applications.
