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.
Order Processing Time:
Orders are typically processed within 24-48 hours after the order has been placed.
Custom or special order items may take longer to process, typically 3-5 business days depending on the product and customization required.
Shipping Methods:
Standard Shipping (3-7 business days - location dependent)
Express Shipping (1-2 business days- location dependent)
Packaging:
All parts are securely packaged to better prevent any damage during transit. Fragile or high-value parts will be packaged with additional protective materials, such as bubble wrap or foam padding.
Shipping Rates:
Shipping rates vary based on the size, weight, and destination of the package. You can view the estimated shipping costs for your order during the checkout process before placing your order.
Order Tracking:
Once your order has been shipped, you will receive an email with the tracking number and carrier information. You can also track your order status by logging into your OCDiesel account.
USA Shipping:
We ship to the USA! (Except California) Please note that USA shipping rates and delivery times may vary based on destination. Customers are responsible for any customs fees, import taxes, or additional charges that may apply.
Not all products are stocked in-house. To ensure you receive your desired items promptly, please check for availability before placing your order. Some products may be backordered due to high demand or supply chain constraints, which could result in longer delivery times.
We strive to keep our inventory updated regularly, but availability can change quickly. For the most accurate information, contact the OCDiesel customer service team using either this link, or the chat bubble on the bottom right of this page.
Most items are eligible for return within 30 days of shipping, provided they are unused, in original manufacturer packaging, and in resalable condition. All returns & cancellations are subject to restocking and cancellation fees.
Returns must include a Return Authorization Number (RA #) and be shipped with tracking. Return shipping costs are the responsibility of the customer.
Custom/special orders, electronics, and digital goods are final sale—no returns, refunds, or exchanges.
For full return instructions, fee details, and conditions, click here.
