Socket is designed to fit in the cylinder head on M42 and M50 engines to remove and install cylinder head bolts.

Spring loaded detent ball holds bolt in place.

Works with 1/2 inch ratchet, breaker bar, or torque wrench.

Socket size is E12 for external TORX® bolts.

No. 5940 - BMW head bolt socket. Wt., 8 oz.