Engine valve for Scania D12D

The engine valve 21428655 is a component designed for the Scania D12D, D13A/C, D13A/C EURO, and D13K engine series. This valve manages the intake of air or the discharge of combustion gases from the cylinder head, ensuring that the engine cycles operate within specified parameters. Proper seating of this valve is required to maintain cylinder compression and engine efficiency.

This part is manufactured by Scania for use in their heavy-duty diesel engine applications. It is engineered to fit the valve train assembly of the listed Scania engine models. Maintenance technicians should verify the specific valve position and application requirements for their engine configuration before installation.

In internal combustion engines, valves are responsible for the timed opening and closing of ports in the cylinder head. Intake valves allow the air-fuel mixture or air to enter the combustion chamber, while exhaust valves permit the expulsion of spent gases. The timing and sealing integrity of these valves directly influence the power output, fuel consumption, and overall thermal management of the engine block.