High-Zinc & Phosphorus Diesel Oil Additive – Ideal for Flat Tappet Cams Boost the protective power of your diesel oil with this ZDDP-rich additive, formulated...
This product has multiple variants. The options may be chosen on the product page
Bolt-On Cam Gear Retainer for Mechanically Injected Engines Secure your helical cut cam gear during high RPM, high fuel-delivery situations with our Bolt-On Cam Gear...
These 1.45-inch tappets provide a larger contact face than the older 1.1-inch design and clear the 12-valve fuel pump eccentric. Check the engine years listed below and match the tappets to your camshaft; follow your cam’s oil and break-in requirements.
Extreme duty pushrods for 1989–1998 12-valve 5.9L Cummins engines. Review the listed specifications and vehicle fitment to confirm compatibility with your engine and valvetrain.
Bronze Cam Retainer / Thrust Plate This bronze cam retainer replaces the factory thrust plate and uses the factory part’s dimensions. Review the listed vehicle...
These 155 lb conical beehive springs include retainers and locks for 12-valve Cummins builds with moderate cams and stock-size valves. Review the installed-height specifications; larger valves, more lift or operation above 4,500 RPM may call for the dual spring kit.
This 12-valve combo pairs the 188/220 cam with 155 lb valve springs, retainers, locks, tappets and extreme duty pushrods. Review the clearance requirements before ordering, especially if the head or block has been machined.
Built around the 178/208 grind for low-RPM response, this combo is for 1989–1998 12-valve Cummins engines. It includes extreme duty pushrods, 155 lb springs, retainers, locks and tappets. Check the clearance and break-in instructions below.
High-Performance Cam Bearings – Made in the USA for Hamilton Cams ($18.99 each) Upgrade your Cummins valvetrain with our premium cam bearings, engineered to withstand...
These 1.45-inch DLC-coated steel tappets are intended for high-RPM builds using 110 lb or heavier valve springs. Choose them as part of a matched camshaft and spring combination; contact us if you need help confirming the setup.
The 12-valve dual spring kit includes retainers and 10-degree locks for builds needing more spring capacity than a single-spring setup. Have your machine shop verify installed height and review the valve-stem seal requirements below.
