Skip to content
8–23 August: reduced summer staffing. Orders may take up to 5 extra working days to dispatch and emails up to 2 working days to answer. Thanks for your patience.
8–23 Aug: orders may ship up to 5 days later.

STC3338G - Thermostat – M51 2.5 Diesel

Original price - Original price €31,50
Original price
€31,50
€31,50 - €31,50
Current price €31,50
OEM Part
OEM: Made by an Original Equipment Manufacturer. This part is made by an original equipment manufacturer or under their license, ensuring compatibility and quality.
Brand Facet
Thermostat - engine coolant thermostat for the 2.5L 6-cylinder BMW M51 diesel engine, part of the engine cooling circuit.

The thermostat is fitted in the coolant outlet housing at the cylinder head, between the engine and the radiator. Below operating temperature it stays closed, restricting flow to the radiator so coolant circulates through the bypass and the engine warms quickly. As the coolant reaches the rated temperature the wax element expands and opens the valve, admitting flow to the radiator and holding the engine at its regulated running temperature.

A thermostat stuck open gives slow warm-up, a persistently low running temperature and weak cabin heat output; one stuck closed causes rapid overheating. Renew the housing seal on refitting, then refill and bleed the cooling system.
Vehicle Model Range Rover Classic 1994-2001 (P38)
Fitment Notes RANGE ROVER P38 1994-2001 — 2.5L 6 Cyl BMW Diesel (M51)
Alternative Codes
STC3338GSTC3338

Available to order 2–3 weeks

Not currently in stock. Order now — typically ships within 2–3 weeks.

Need it faster? Contact us about express import (2–5 business days).


When will my order arrive?

This item is ordered from our supplier on request. Typical lead time is 2–3 weeks from order confirmation.

  • Netherlands / Belgium / Germany: 2–4 working days after dispatch.
  • Other EU countries + UK: 4–8 working days after dispatch.
  • Outside EU/UK: contact us for an estimate.

Need it faster? Express import available in 2–5 business dayscontact us before ordering.

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What is the STC3338G thermostat?
The STC3338G is the Facet-branded engine coolant thermostat for the 2.5L six-cylinder BMW M51 diesel. It sits in the coolant outlet housing at the cylinder head, holding the engine at its regulated running temperature by opening to the radiator once the wax element reaches temperature.
Why would the STC3338G thermostat need changing?
The STC3338G is renewed when it sticks. Stuck open, the M51 diesel runs cold with poor cabin heat; stuck closed, it overheats quickly. Renew the outlet housing seal when fitting the STC3338G, then refill and bleed the cooling system.
Which vehicle takes the STC3338G thermostat?
The STC3338G fits the Range Rover P38 1994-2001 with the 2.5L six-cylinder BMW M51 diesel. It's the Facet equivalent of the standard M51 thermostat. Confirm your engine is the BMW six-cylinder diesel before ordering.