Radiator cap expansion bottle (NTC7161)

This is an expansion tank cap for the cooling system, from the Allmakes 4x4 brand.

It seals the cooling system and keeps it under pressure, and is usually replaced when its seal deteriorates, causing coolant loss or overheating.

Compatible with Land Rover Defender (200/300 TDI), Discovery 1 (200/300 TDI, V8) and Range Rover Classic (200/300 TDI).

Reference: NTC7161