Carburetter Jet Needle & Seat Spanner

What Is This Tool?

This box spanner is designed for removing and installing the jet needle valve seat in SU carburettor float chambers. It allows the seat to be removed without damaging the flats, which can easily happen when using incorrect tools.

Key Benefits

• Box-spanner design helps prevent rounding of the valve seat flats.
• Suitable for use in the restricted space around the float chamber.
• Useful when replacing worn needle valves or correcting float chamber fuel level issues.

Fitment & Compatibility

Suitable for SU carburettor installations using a genuine valve float seat that matches this spanner profile.

This box spanner will only fit genuine valve float seat

The below part number valve seats will require the use of a 3/8” box spanner:

XFCH1264

Aftermarket valve seats or alternative designs may require a different spanner size.

What’s Included

• 1 × carburettor jet needle and seat box spanner

Why Choose This Tool

A correctly fitting box spanner reduces the risk of damaging the valve seat during carburettor servicing. Using the proper tool helps maintain the condition of the seat and simplifies future maintenance.