Hamilton Cams 07-p-004 24 Valve Extreme Duty Pushrods 12mm (1998.5-2018 5.9/6.7L Cummins)

Fitment

Fits 24-valve Cummins engines from 1998.5 through 2018:

• 1998.5-2002 5.9L 24-valve, Dodge Ram 2500/3500
• 2003-2007 5.9L common rail, Dodge Ram 2500/3500
• 2007.5-2009 6.7L, Dodge Ram 2500/3500
• 2010-2018 6.7L, Ram 2500/3500

These are not listed for 12-valve engines or for 2019 and newer 6.7L trucks. Ram 3500, 4500 and 5500 chassis cabs share the 6.7L but use different frames and routing, so verify chassis-cab fitment with us. Send your VIN or call the shop and we'll confirm. More parts for your engine are under Cummins.

Why this part

Pushrods carry the cam's motion up to the rocker arms. In engines over 500 horsepower, Hamilton says, high cylinder pressure starts to bend and buckle factory pushrods. When a pushrod deflects, you lose valve lift and the cam timing ends up retarded. Hamilton built these to solve that problem.

The numbers: a 12mm diameter with a .120″ wall, compared with the OEM 3/8″ pushrod or a standard performance 7/16″ pushrod. Hamilton rates buckling strength at up to 6,600 lbs against 1,780 lbs for OEM pushrods, and has tested them in builds exceeding 3,000 horsepower. Thicker walls and a larger diameter keep them stable under intense cylinder pressure, so valve lift stays consistent. Hamilton pitches them for everything from mild performance upgrades to full-blown race engines, and as the answer to OEM pushrod failures.

Pushrods are a standard part of the top-end package once power goes up. On 2003-2004 5.9L trucks, upgraded valve springs, pushrods, head studs and fire-ring gasket kits are the usual heads-and-studs path once boost and fueling are raised. On the 6.7L, the high-boost valvetrain list includes stiffer valve springs, upgraded pushrods, billet rocker-arm bridges and oversize valve seats.

What you get

• Hamilton Cams 07-p-004 24 Valve Extreme Duty Pushrods
• 3-piece construction
• 12mm diameter, .120″ wall thickness

Specifications

• Engineered for Power: Tested in builds exceeding 3,000 horsepower, ensuring reliable performance at extreme power levels.
• Superior Strength: With a buckling strength of up to 6,600 lbs (compared to OEM pushrods at 1,780 lbs), you’ll get consistent valve lift and avoid retarded cam timing.
• Precision & Reliability: Thicker walls and a larger diameter provide improved stability under intense cylinder pressures, reducing the risk of deflection.

Design: 3-piece, 12mm diameter, .120″ wall thickness. For comparison, OEM pushrods are 3/8″ and standard performance pushrods are 7/16″.

About Hamilton Cams

Hamilton Cams builds valvetrain and top-end parts for the 5.9L and 6.7L Cummins out of Lampasas, Texas. The line is built around two cam grinds, a milder 178/208 cast cam and a bigger 188/220 steel cam, sold bare or as complete Camshaft Combos, plus fire ring head gaskets, top end gasket kits and forged valve bridges. Everything we carry from Hamilton fits a Cummins. See the full line at Hamilton Cams.

Frequently asked questions

Do I need these on my engine?

Hamilton built them for engines over 500 horsepower, where high cylinder pressure starts bending and buckling pushrods. They work on a mild performance upgrade as well as a full race engine. If you're adding power and want consistent valve lift and cam timing, they're the piece to look at.

How much stronger are they than stock?

Hamilton rates them at up to 6,600 lbs of buckling strength, compared to 1,780 lbs for OEM pushrods. They're 12mm with a .120″ wall, against the OEM 3/8″ pushrod.

Will these fit my 2019 or newer 6.7L?

No. They're listed for 1998.5-2018 24-valve engines only. For 2019-2024 trucks, Hamilton offers a Flat Tappet Conversion that changes the factory roller lifter setup. Call us with your VIN and we'll tell you what fits your truck.

Questions on fitment? Call the shop at the number in the header. We install everything we sell.