Standard thermostat for later Discovery and Freelander for the lower temperature setting for COOLER engine temperature.
Engine may run as much as 10 degree lower (reported).
New in line thermostat for Discovery II & other Land Rover models that use Part # OEM PEM100990.
Can be replaced with # OEM PEWL500110 that runs @ 82C/180F.
Gray colour housing.
PEM100990 - Cream is 88° With hard Spring (Designed for Diesel and V8 applications)
PEM101020 - Black is 82° With Hard Spring (Designed for a V8 and used as a stopgap with K4 engines)
PEL500110 - Grey is 82° With Light Spring (K4 engines)
**Light spring allows more water to flow at idle through thermostat**
