If a part is temporarily unavailable, you could substitute it with these parts:
Quality Glow plug control module for Land Rover RANGE ROVER 3.0 D 4x4 256 hp Diesel
Wide selection of new glow plug control module for Sport L320 3.0D 4x4 Diesel 256 hp, priced from £52.24 to £105.48. Choose from 6 trusted manufacturers.
Tried, tested, and top-rated: Glow plug control module for Land Rover Range Rover Sport (L320) 3.0 D 4x4 256 hp Diesel