Pneumatic engine valve spring compressor designed for removing and installing the valve spring and valve stem seals without removing the cylinder head from the engine. This on-engine valve spring compressor helps reduce the disassembly required for many engine service jobs.
Comes with carbon steel support rods, slotted mounting brackets and the adjustable holder form a solid working platform over the target spring. Threaded pressure screws convert hand-tool torque into smooth, controlled downward force for valve spring removal and installation.
Compressed air is used to keep the valves from falling in to the combustion chamber. Suitable for use on European models such as Mercedes, BMW, also Asian and American models.