1092903
Engine Valve
Volvo

Engine valves govern the flow of air and fuel into and out of the combustion chamber, making them a core element of a Volvo engine’s breathing and performance. This valve features a precisely machined head and stem, heat-treated construction, and a tight seal against the valve seat to maintain compression and prevent leakage. Its shape and material choice are designed to withstand high temperatures, repeated thermal cycling, and corrosive combustion byproducts, contributing to stable idle, strong throttle response, and efficient fuel usage. Proper seating and valve lash adjustments are critical for consistent ignition timing and engine longevity. Replacement becomes necessary when signs of burning, bending, or excessive wear appear, as continued use can lead to reduced power, misfires, or costly cylinder damage. When selecting an engine valve, it’s important to verify the valve stem diameter, seating surface finish, and compatibility with the cylinder head design. Source One Parts Center reminds technicians to verify OEM specs for seating height and material grade.