QualCast Products

Valve Train Specialists

QualCast is a worldwide distributor of engine valves, valve seat inserts, valve guides, valve springs, valve spring inserts, valve keepers (cotters, keys), valve lifters, valve stem seals, rocker components, injector components, push rods and freeze plugs.

Applications are divided into 3 printed catalogs – “Heavy Duty, Agricultural and Industrial” applications are in one catalog, “Light Duty, Medium Duty, and Marine” are in a second, and the 3rd catalog contains “QualFast” and “Black Lightning” performance applications. All catalogs can be downloaded via the Online Catalog page in .pdf form, or the Online Catalog contains all applications for all type of engines. Light Duty applications can also be searched for by Year, Make, Model and Engine.

Valve Springs

QualCast springs are made from super clean carbon steel wire (non-metallic particles can reduce steel strength). We also use chrome, chrome vanadium, or AS-25, depending on the application.

Engineered Features

Single Spring Design - ground flat on top and bottom for straightness and shot-peaned for heat-related fatigue resistance.

Spring With Damper - A flat ribbon damper on the inside diameter of the spring reduces spring "bounce" and "surge". We identify springs with dampers by the part number suffix "-D".

Double Spring Design - Many heavy duty applications have an inner and outer spring; the double springs give additional strength pressure to seat the valve.