1989-2018 Cummins 5.9L/6.7L Hamilton Cams 54mm (OEM) Camshaft Bushing Set (07-c-HC1)

Upgrade your Cummins valvetrain with our premium cam bearings, engineered to withstand higher pressures and extended RPM use. Ideal for replacing worn or damaged OEM bearings, these made-in-the-USA components provide long-lasting durability in both stock and performance builds.

Why Choose Hamilton High-Performance Cam Bearings?

• Durable Construction: Perfect for engines running over 450 lbs of nose pressure or steel camshafts.
• Versatile Fit:
• 12V Engines: One bearing on the first journal.
• Some Common Rail Engines: One bearing on the first journal and one on the seventh.
• For extreme builds, machine your block to run bearings on all seven journals.
• Two Size Options:
• HC-1: For stock-size cam journals (2.124″ diameter).
• HC-2: For large-journal cams (2.165″ diameter).
• Precise Bore Requirement: Both HC-1 and HC-2 bearings require a 2.333″ (+/− 0.0005″) cam bore.

Installation & Performance Tips

• Stock Replacement or Upgrades: Directly replace factory bearings to restore reliability or add extra durability for performance builds.
• Improved Load Handling: Designed to handle the stress of higher valve spring pressures and aggressive cam profiles.
• Peace of Mind: Machine your block for all seven journals if you’re pushing higher RPM or running higher-than-standard seat pressures.

Invest in our High-Performance Cam Bearings to extend the life of your valvetrain and confidently push your Cummins engine to new performance levels.