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Product Description
About Valve Rocker Arm
A rocker arm is an oscillating lever that conveys radial movement from the cam lobe into linear movement at the poppet valve to open it. One end is raised and lowered by a rotating lobe of the camshaft (either directly or via a tappet (lifter) and pushrod) while the other end acts on the valve stem. When the camshaft lobe raises the outside of the arm, the inside presses down on the valve stem, opening the valve. When the outside of the arm is permitted to return due to the camshafts rotation, the inside rises, allowing the valve spring to close the valve.
Part Adaptability:
2008-2010 F-ord F-250 Super Duty
2008-2010 F-ord F-350 Super Duty
2008-2010 F-ord F-450 Super Duty
2008-2010 F-ord F-550 Super Duty
- with 6.4L Powerstroke Diesel Engine
OEM Part Numbers:
- 8C3Z-6564-D
- 8C3Z6564D
Replace Your Bad Rocker Arm On Time
Rocker arms are typically located between the pushrod and intake and exhaust valves. They are pushed and pulled by pushrods to “rock” up and down, opening and closing the exhaust valve and intake valve of the combustion chamber on engines with a camshaft below the engine.
Your engine may exhibit one or more of the following symptoms if one or more rocker arms is failing:
- Clicking or Ticking Noises: Unusual noises involving valves often sound like a rapid clicking or ticking, similar to a sewing machine.
- Weak Engine Performance or Stalling: For maximum efficiency, valves must open and close at just the right time. If the vehicle’s faulty rocker arm is getting in the way of this process, you’ll notice decreased power and poor acceleration.
- Check Engine Light On: The vehicle will recognize weak engine performance as well, and will warn the driver by illuminating the check engine light.
- Physical Deterioration: Visual inspection of the rocker arms can also reveal any cracks or wear.
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Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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