The main function of an engine valve is to open and close rapidly. This allows the air and fuel charge to enter the combustion chamber and after ignition, the exhaust valve allows the waste gases to flow out into the exhaust system.Each cylinder has at least one intake and one exhaust valve. Good engine performance depends on valve condition. Worn guides or stems and burned or badly seated valves allow gas to escape under compression, resulting in poor starting and loss of power. Symptoms of a bad or failing engine valve: engine misfire, excessive oil consumption. Be sure to have your engine valves replace with aftermarket replacement engine valves as soon as it starts to give you trouble. Part Number:RB3139,12610603,12610604,12585761,12648787, 12643669,12585762, 12643670,12648786, 12643671, 12585763,12585764,12610931,12621548. Compatibility is just for reference.
Please compare with your one before purchasing. 8 Pcs Main Bearing Set. 12 Pcs Rod Bearing Set. Communication is the best way to solve the problem.Durable, ready to handle tough environments. Factory direct pricing without middleman mark-ups. Limited Lifetime Guarantee against workmanship and defects (for the owner). (except weekends & official holidays). We will be very honored to provide you with quality service. We will try our best to resolve any kind of issue.