This is a blanking or sealing plug used in engine applications on the Land Rover Defender, fitted to block off unused ports, galleries, or threaded apertures in the engine block or associated components. On early Defender engines, plugs of this type are commonly used to seal oil or coolant passages, and a failed or missing plug can result in fluid loss, contamination, or loss of pressure within the affected system. Correct replacement ensures the integrity of the sealed circuit is maintained. Key Features Sealing plug designed for engine block or gallery port applications on early Defender engines Compatible with non-magnetic sump variants up to chassis LA935268 on 2.25 Petrol applications Suitable for use on gallery pipe configurations - note: not applicable to Tdi gallery pipe setups on 2.5 Turbo Diesel variants Inspect surrounding threads for corrosion or damage before fitting; replace any degraded sealing compound or tape as required Vehicle Fitment Fits Land Rover Defender (1986–2006) with 2.25 Petrol and 2.5 Diesel NA and 2.5 Turbo Diesel (Less Tdi, Gallery Pipe) engines, with specific chassis and engine serial number restrictions as noted in fitment data. Not sure about fitment? Feel free to get in touch at [email protected]