This set of 4-off injector blanking plugs is intended to blank (close off) the injector bores in a cylinder head or inlet manifold - often required when fitting carburettors to an engine that was previously fuel injected.

The blanks are supplied with matching O-ring seals to suit the 14mm injector bores. 

Note that the O-ring is only intended as a sealing method and will not reliably retain these bungs in the event of an engine backfire or similar. Therefore bungs MUST be retained via a mechanical means. This can be achieved by either bonding the blanks into the bores or by clamping them in via a clamp plate mounted off your original fuel rail mounting points.