This is a brand - new, state - of - the - art rocker arm with an 8mm hole size. The new - style design offers enhanced performance and durability, making it a top - notch choice for your engine.

Using this rocker arm is quite easy. First, make sure your engine is turned off and cooled down. Then, carefully install the 8mm rocker arm in the appropriate position. During installation, be gentle to avoid any damage. When the engine is running, keep an eye on it for the first few hours to ensure everything is working smoothly. As for maintenance, it's a good idea to check the rocker arm periodically for wear and tear. Clean it regularly to prevent dirt and debris from building up. If you notice any abnormal noises or performance issues, stop using the engine and inspect the rocker arm right away.