Valve Spring Compressor Set 15pc Air 3/8in Drive Engine Tool

A 15-piece valve spring compressor set for engine valve servicing using air pressure through the spark plug thread. Used with a 3/8in drive T-handle or ratchet, it helps prevent the valve from dropping into the engine while work is carried out.

Useful for garage work, workshop servicing and engine maintenance where valve springs need to be removed or fitted with the cylinder head still in place. This suits mechanics and experienced DIY users working on petrol engines during repair jobs, rebuilds or routine valve train work, especially when access is limited and stripping the head off the engine would add time.

Air is delivered through the supplied spark plug thread adaptors to create counter pressure inside the cylinder, supporting the valve during the job. The set is suitable for M14 x 1.25 and M18 x 1.5 spark plug threads, covering two common thread sizes used across different engines. The 15-piece layout gives you the accessories needed for the task, which helps keep the job straightforward and reduces the need to piece tools together from different kits. For regular servicing work, that can save time when moving between engines or repeating the same repair process.

Valve spring compressor set specifications

• Contents: 15-piece valve spring compressor set for air-assisted valve servicing.
• Drive size: Operates with a 10mm / 3/8in drive T-handle or ratchet.
• Thread fitment: Suitable for spark plug threads M14 x 1.25.
• Covers: Also fits spark plug threads M18 x 1.5.
• Function: Air pressure helps stop the engine valve dropping into the cylinder during servicing.

A practical choice for regular engine maintenance and repair work.