Spark Plug Socket 21mm 3/8in Drive Extra Long 250mm Magnetic

A 21mm spark plug socket with a 3/8in drive, extra-long 250mm body and internal magnet for holding the plug securely during removal and refitting. Built for reaching spark plugs set deeper into cylinder heads, this long spark plug socket gives better access where a standard socket may come up short.

Used for servicing cars and motorbikes, this socket suits routine maintenance, spark plug changes and general engine work. The long reach is useful in tighter engine bays and on engines where plugs sit low down, helping when access is awkward or when working around surrounding components. For garage work, workshop use or home vehicle maintenance, it is a practical option when you need controlled access to a 21mm spark plug.

The 12 point design helps the socket engage the plug fitting cleanly, while the internal magnet helps keep the plug in place as you lift it out or guide it back in. Made from steel with a chrome finish, it is straightforward to wipe down after use and store with the rest of your service tools. The 27mm outside diameter is worth noting where clearance is limited around the plug recess. For regular servicing, the extra length and magnetic hold help avoid fumbling in deeper plug holes and make repeated plug changes more straightforward.

Spark plug socket specifications

• Size: 21mm spark plug socket with 250mm overall length.
• Drive: Fits 3/8in drive ratchets, extensions and related tools.
• Design: 12 point socket pattern for spark plug removal and refitting.
• Function: Internal magnet helps retain the spark plug during handling.
• Finish: Steel construction with chrome finish and 27mm outside diameter.

A practical 12 point spark plug socket for regular vehicle servicing and plug replacement work.