Cummins 89-18 54mm (OEM size)Cam Bushing Set Cam Bushings HC1 - 54 mm Cam bushing set. Standard Size

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.

Specifications

• Durable Construction : Perfect for engines running over 450 lbs of nose pressure or steel camshafts .
• Some Common Rail Engines : One bearing on the first journal and one on the seventh.
• HC-1 : For stock-size cam journals (2.124″ diameter).
• Precise Bore Requirement : Both HC-1 and HC-2 bearings require a 2.333″ (+/− 0.0005″) cam bore.
• 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.