The OEM S54 Solenoid Coil pack is known for failure due to the solder joints inside breaking as a result of the vibration from the engine, among other failures.

These rebuilt coil packs by Beisan feature a number of improvements.

Information and replacement procedure can be seen here.

Price is £577.20, £300 of which is refunded upon receipt of your original coil pack. Installation requires part BS024, available seperately. This surcharge is refunded to you upon receipt of your original solenoid coil pack, which must be in a refurbishable condition, meaning no previous tampering and no damage to the body. If your core unit arrives with us and is damaged, then no core refund can be applied. When returning your core unit, include your name and order number – NO DETAILS, NO REFUND.