Spark Plug Socket 16mm 3/8in Drive Extra Long 250mm Magnetic

A 16mm spark plug socket built for removing and fitting spark plugs where access is awkward. The extra long 250mm body, 3/8in drive fitment and magnetic insert make it a practical choice for vehicle servicing on cars and motorbikes.

Used for spark plug changes, routine servicing and fault-finding work, this socket helps when plugs sit deep in the cylinder head or behind surrounding engine components. It suits garage work, home vehicle maintenance and workshop use, especially where a standard length socket does not give enough reach. The 16mm 12-point socket is compatible with 5/8in spark plugs, making it useful across a wide range of common applications.

The slim outside diameter of 20.9mm helps with access in tighter plug wells, while the knurled section gives better grip when starting the socket by hand or adjusting it in confined areas. An internal magnet helps hold the spark plug securely during removal and refitting, which can make the job more controlled and helps reduce the chance of dropping the plug into awkward spaces. For regular servicing, the long reach and secure hold are useful where space is limited and repeated access is needed.

Spark plug socket specifications

• Drive size: 3/8in drive for use with compatible ratchets and extensions.
• Socket size: 16mm 12-point socket, compatible with 5/8in spark plugs.
• Length: Extra long 250mm body for reaching plugs set deeper in the engine.
• Outside diameter: 20.9mm design helps with access in narrow spark plug recesses.
• Handling: Knurled body and internal magnet help grip the socket and hold the plug more securely.

A practical choice for regular vehicle maintenance where access is tight.