This part by itself may not work. There is pin within the ABS modulator with a weak solder joint.

There is a write up at the link below about bypassing the solder joint (provided you test for a weak solder joint at the modulator as shown in the write up). Another option is to replace the ABS modulator and Land Rover has a kit for this option.

ABS Mod - LAND ROVER CLUB V.I.

We replaced the modulator after testing modulator pin for intermittent conductivity as there was a great deal on ebay for a Land Rover repair kit.

There is a kit on ebay now.

Land Rover Discovery Wabco ABS Module Modulator Repair shuttle valve fault

2003 Discovery 138K with all high miles services complete.