The RUST High Quality Valves are a vehicle component for any of the available modular vehicle engines. Facepunch added the modular vehicles in the Modular Vehicle Component Update on the 3rd of July, 2020.
Engine components, unlike modules themselves, may be added to a car in the field, or you can add them by having the vehicle raised on a powered Modular Car Lift.
All engines require a number of set components of assorted types for the vehicle to function.
Higher quality parts such as the High Quality Carburetor, High Quality Crankshaft, High Quality Pistons, High Quality Spark Plugs, and High Quality Valves greatly improve speed and performance over lesser quality models.
This component promotes the rate of fuel consumption, meaning that it will decrease the amount of fuel required to go the same distance over a part of lower quality.
High quality engine components may be researched and crafted exclusively at the tier 3 workbench.
For more information on modular vehicles, read our RUST Modular Cars Guide.