4510K x 1. This is a Complete rear half shaft fitting kit for XK Jaguars with Salisbury 2HA & 4HA axles. It suits to any original Jaguar XK120, XK140, or XK150 - EXCEPT the early XK120 models which were equipped with ENV axles. 
The kit includes  rear hub bearing, high spec. axle half shaft, rear axle nut and split-pin, hub securing key, rear hub outer seal and carrier plate, inner oil seal, x axle shim 0.003", axle shim 0.025", and rear hub gasket.

Our part references are 4510, 4511, 4509, 4352, 4520, 4250, 4523, 4524, 4526, 4522 & L105/12U corresponding to the original references 3846, 3924, 131/201932, C7356, C1481, 3848, 3867, 3870, C1483 respectively.

These are too short for Mk.7s (Thanks to Clemens in Switzerland for the information)