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AMR3321LUCAS - Temperature Transmitter – Black by LucasElectrical Part Land Rover Range Rover Defender, Discovery, Range Rover

AMR3321LUCAS - Temperature Sensor – Black

- €20,10
€20,10
€20,10 - €20,10
€20,10
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 Lucas
Coolant Temperature Transmitter - Black mounted at the thermostat housing, supplying the coolant temperature signal to the instrument cluster temperature gauge.

This sender converts coolant temperature to a variable resistance signal. The black body colour identifies this specific calibration variant, distinguishing it from other colour-coded coolant temperature senders in the Land Rover range - using the incorrect colour variant will cause an inaccurate gauge reading.
Vehicle Model Land Rover Defender up to 2016
Fitment Notes DEFENDER 1987-2006 — 300TDi (black sensor at thermostat housing)
Alternative Codes
AMR3321LUCASAMR3321AMR2273

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 days — contact 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 AMR3321LUCAS temperature sensor and what does it do?
The AMR3321LUCAS is the coolant temperature transmitter that drives the temperature gauge in the instrument cluster. It's mounted at the thermostat housing and converts coolant temperature into a variable resistance signal for the gauge. This is the OEM Lucas sender, Land Rover part number AMR3321.
Where is this temperature sender fitted on the engine?
This sender fits at the thermostat housing. On the Defender it's the 300Tdi engine; on the Discovery 1 and Range Rover Classic it's the 3.9 V8 petrol. It reads coolant temperature at that point and sends the signal to the dash gauge, so it's not the same as an ECU coolant sensor.
Why is this sensor black, and does the colour matter?
The black body colour marks this sender's specific calibration, and yes it matters. Fitting a different colour-coded coolant sender changes the resistance curve and gives an inaccurate gauge reading. Match the black variant to the one you're removing so the gauge reads correctly.
How do I confirm this sensor fits my Land Rover?
This fits the Defender 1987 to 2006 with the 300Tdi, the Discovery 1 1989 to 1998 with the 3.9 V8 petrol, and the Range Rover Classic 1970 to 1994 with the 3.9 V8 petrol. Check your engine and match the black colour variant to your existing sender before ordering.

Alternative & Related Options

Same part, different brands or quality grades. Click any option to view full details.

1 option
AMR3321 - Temperature Sensor – Black
Aftermarket AMR3321 - Temperature Sensor – Black
Stock 18
€8,90 excl. VAT
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