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LR181521G - Auxiliary Radiator

Original price - Original price €179,20
Original price
€179,20
€179,20 - €179,20
Current price €179,20
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 Nissens
Auxiliary Radiator - a supplementary heat exchanger in the engine cooling circuit, mounted in the front cooling pack alongside the main radiator.

It carries part of the coolant flow through its own core, adding heat-rejection capacity beyond that of the primary radiator so coolant temperature is held under sustained high load, high ambient temperature or towing. The same auxiliary radiator is used across petrol, diesel and plug-in hybrid installations.

Cores are replaced rather than repaired. Impact damage to the fins, corrosion at the tube-to-header joints and seepage at the plastic end tanks all reduce heat transfer well before they show as a visible leak.
Vehicle Model Land Rover Discovery 5 2017+ (L462)
Range Rover 2013-2022 (L405)
Range Rover Sport 2014-2022 (L494)
Fitment Notes DISCOVERY 5 2017+ — Auxiliary cooling radiator; petrol, diesel & PHEV
RANGE ROVER L405 2013+ — Auxiliary cooling radiator; petrol, diesel & PHEV
RANGE ROVER SPORT L494 2014+ — Auxiliary cooling radiator; petrol, diesel & PHEV
Alternative Codes
LR181521GLR181521

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 LR181521G auxiliary radiator and what does it do?
The LR181521G is a supplementary cooling radiator mounted in the front cooling pack alongside the main radiator on the Discovery 5, Range Rover L405 and Range Rover Sport L494. It carries part of the coolant flow through its own core, adding heat-rejection capacity under sustained load, high ambient heat or towing.
What are the signs this auxiliary radiator needs replacing?
Failing auxiliary radiators typically show as reduced cooling before any visible leak. Impact damage to the fins, corrosion at the tube-to-header joints and seepage at the plastic end tanks all cut heat transfer. Cores are replaced rather than repaired.
Does one auxiliary radiator cover petrol, diesel and hybrid?
Yes, the same auxiliary radiator is used across petrol, diesel and plug-in hybrid installations on these models. Engine choice doesn't change the part, though you should confirm your model and build against the fitment list before ordering.