TD5 Engine Cooling Parts
TD5 engine cooling parts for Defender TD5 and Discovery 2 TD5, including radiators, thermostats, water pumps, coolant hoses and pipes, expansion tanks, fans, temperature sensors, oil cooler parts, fuel coolers, bleed screws and OAT coolant.
Start with the vehicle and component being replaced, then match the original part number and any early/late or EU2/EU3 notes. Defender and Discovery 2 share many core TD5 engine components, but radiators, expansion tanks, hose layouts and several surrounding cooling parts are vehicle-specific.
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Find the right TD5 cooling parts
TD5 cooling parts are normally identified by the job, vehicle and exact position in the cooling system. Larger components such as radiators, water pumps, thermostats and expansion tanks are usually straightforward to identify, while smaller hoses, seals, elbows and washers need closer part-number and location checks.
| Job | Best place to start | Check before ordering |
|---|---|---|
| Water pump replacement | Water pumps, pump covers, seal kits, housing O-rings and fixing bolts | Original pump reference and whether seals or fixings are included |
| Temperature control | Thermostats, coolant outlet elbows and temperature sensors | Part number, brand or quality level and any vehicle-specific fitment |
| Radiator and cooling airflow | Vehicle-specific radiators, viscous fan assemblies and Discovery 2 electric fans | Defender or Discovery 2 fitment, early or late radiator and the purpose of the fan |
| Coolant hose replacement | Top and bottom radiator hoses, thermostat hoses, heater hoses and cooler hoses | Vehicle, hose position, early or late layout and original part number |
| Coolant pipes and heater circuit | Heater feed pipes, heater matrices, coolant rails and connecting hoses | Vehicle fitment, pipe orientation and the connection points at each end |
| Expansion tank service | Expansion tanks, pressure caps, bleed screws and drain plug washers | Defender or Discovery 2, EU2 or EU3 where stated, and the original tank or cap number |
| Oil and fuel cooling | Oil cooler repair kits, complete oil cooler housings, fuel coolers and connecting hoses | Repair kit or complete assembly, cooler type and the exact hose or pipe arrangement |
| Coolant replacement | OAT antifreeze and coolant concentrate | Required coolant type, pack size and the manufacturer’s mixing instructions |
Check TD5 cooling fitment before ordering
Defender TD5 and Discovery 2 TD5 use the same engine but not the same complete cooling-system layout. Use the vehicle, original part number, component position and any early/late notes together rather than ordering from the TD5 engine name alone.
Defender or Discovery 2
Radiators, expansion tanks and many coolant hoses are specific to the vehicle rather than shared across both TD5 installations.
Radiators, expansion tanks and many coolant hoses are specific to the vehicle rather than shared across both TD5 installations.
Early, late, EU2 or EU3
Check every stated production, engine-management or cooling-layout split, particularly for Discovery 2 tanks and Defender or Discovery 2 hose assemblies.
Check every stated production, engine-management or cooling-layout split, particularly for Discovery 2 tanks and Defender or Discovery 2 hose assemblies.
Part number and position
Several TD5 coolant hoses look similar. Match the original part number and confirm where the hose connects at both ends.
Several TD5 coolant hoses look similar. Match the original part number and confirm where the hose connects at both ends.
Assembly or repair kit
Check whether the product is a complete component, a sealing kit or an individual supporting part, and confirm exactly what is included.
Check whether the product is a complete component, a sealing kit or an individual supporting part, and confirm exactly what is included.
Genuine, OEM and aftermarket TD5 cooling parts
Several core TD5 cooling components are available in more than one brand or quality level. Individual product pages identify the manufacturer, Genuine, OEM or OE-quality status where confirmed, and any differences in kit contents or component scope.
| Part type | How it is shown on Twinwoods 4x4 |
|---|---|
| Genuine Land Rover | Factory-branded parts are identified as Genuine Land Rover on the individual product page. |
| OEM or OE-quality | OEM, OE-supplier and OE-quality wording is used only where the product or supplier information supports it. |
| Branded aftermarket | Branded water pumps, thermostats, radiators, sensors, fans and other cooling components are identified by manufacturer. |
| Selected replacement | Other replacement parts are described by their exact fitment, component type and included parts without unsupported quality claims. |
Related TD5 cooling sections
| Section | Use it for |
|---|---|
| Defender cooling system parts | Defender-specific radiators, hoses, expansion tanks, heater parts and cooling components across the wider engine range. |
| Discovery 2 cooling parts | Discovery 2 TD5 and V8 cooling parts, including vehicle-specific radiators, tanks, hoses and fans. |
| TD5 thermostats | Compare the available thermostat brands and quality levels for Defender TD5 and Discovery 2 TD5. |
| TD5 water pumps | Compare TD5 water pumps and the associated seals, fixings and pump components. |
| Land Rover antifreeze and coolant | Coolant and antifreeze products for cooling-system servicing and refilling. |
| TD5 thermostat guide | Thermostat operation, temperature information and common fault symptoms. |
