Cooling & Heating

Cooling & Heating

Land Rover Discovery 1

Discovery 1 Cooling & Heating Parts

Keep your Discovery 1 engine at the correct temperature and the cabin heating system working with radiators, water pumps, thermostats, hoses, fan components and heater parts.

What you will find in this category

Radiators & Coolers

Radiators, engine-oil coolers, expansion components and related fittings.

Water Pumps & Thermostats

Replacement pumps, thermostats, gaskets and temperature-control components.

Hoses & Pipework

Top and bottom radiator hoses, heater-hose sets, clips and coolant fittings.

Fans & Sensors

Viscous fan couplings, temperature sensors, switches and selected cooling upgrades.

Identify the engine and cooling layout

Cooling parts differ between 200Tdi, 300Tdi and V8 engines. Check hose routing, connection sizes, engine type and model-year information before ordering.

Quality choices for your Discovery 1

Choose from Direct Replacement, Britpart, Genuine Land Rover, OEM, Proflow, Nissens and other established cooling-system suppliers.

Ordering tip: Discovery 1 specifications vary by engine, model year, body style, gearbox, axle and previous modifications. Always check the complete individual product listing and part number before ordering.
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  • Direct Replacement Thermostat for Defender & Discovery 1 300TDi, automotive thermostat with metal housing and spring mechanism for engine cooling system. Direct Replacement Thermostat for Defender & Discovery 1 300TDi, automotive thermostat with metal housing and spring mechanism for engine cooling system.

    Thermostat for Defender & Discovery 1 300TDi

    (14)

    Direct Replacement

    £5.99 Inc. VAT
    £4.99 Ex. VAT
    A replacement standard 88c engine coolant thermostat. Comes complete with sealing rubber gasket. A quality replacement part, equivalent to Land Rover part number: ERR3291Suitable for the following models: Land Rover: Defender, 300TDi, 1994-1998 Land...
    ERR3291
    £5.99 Inc. VAT
    £4.99 Ex. VAT
    Qty in Cart: 0
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  • Quinton Hazell XS Water Pump OE Quality for Discovery 1 300TDi, automotive water pump with gasket, packaged in orange box. Quinton Hazell XS Water Pump OE Quality for Discovery 1 300TDi, automotive water pump with gasket, packaged in orange box.

    XS Water Pump OE Quality for Discovery 1 300TDi

    (10)

    BRITPARTXS

    £32.99 Inc. VAT
    £27.49 Ex. VAT
    Reliable Cooling for Your Land Rover The water pump is the heart of your engine’s cooling system. If it fails, your engine can overheat very quickly. This water pump is a high-quality replacement that ensures your coolant keeps moving, even in the...
    PEB500090G
    £32.99 Inc. VAT
    £27.49 Ex. VAT
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  • Direct Replacement Water Pump Metal P Gasket for Defender & Discovery 1 300TDi, black metal gasket for water pump repair.

    Water Pump Metal P Gasket for Defender & Discovery 1 300TDi

    (9)

    Direct Replacement

    £1.69 Inc. VAT
    £1.41 Ex. VAT
    This is the gasket that fits behind the water pump on All Land Rover 300TDi engines and is commonly known as the 'P' gasket. This is the modified metal type gasket that replaces the original fibre type gasket. It is common for this gasket to fail causing...
    PET100790G
    £1.69 Inc. VAT
    £1.41 Ex. VAT
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  • Product: Direct Replacement Thermostat for Defender & Discovery 1 200TDi, image showing the thermostat with a gasket on a white background.

    Thermostat for Defender & Discovery 1 200TDi

    (6)

    Direct Replacement

    £6.49 Inc. VAT
    £5.41 Ex. VAT
    A brand new replacement standard engine coolant thermostat and gasket. A quality replacement part, equivalent to Land Rover part number: ERR2803Suitable for the following models: Land Rover: Defender, 200TDi, 1989-1994 Land Rover: Discovery 1, 200TDi,...
    ERR2803K
    £6.49 Inc. VAT
    £5.41 Ex. VAT
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  • Direct Replacement Water Temperature Sensor - Green Top for Defender/Discovery 1 300 Tdi, close-up of the brass sensor with a green top and threaded section for engine coolant temperature detection.

    Water Temperature Sensor - Green Top for Defender/Discovery 1 300 Tdi

    (5)

    Direct Replacement

    £4.89 Inc. VAT
    £4.07 Ex. VAT
    Defender/Discovery 1 water temperature sensor - green top. SUITABLE FOR THE FOLLOWING LAND ROVER MODELS:Defender, 300 Tdi, 1994-1998Discovery, 300 TDi, 3.9V8, 1994-1998Range Rover Classic, 300 TDi, 3.9V8, 1994-1995Range Rover P38, 4.0, 4.6 V8, 1994-2002...
    AMR1425
    £4.89 Inc. VAT
    £4.07 Ex. VAT
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  • Direct Replacement Water Pump & P Gasket for Defender & Discovery 1 300TDi, image of water pump gasket and gasket set.

    Water Pump & P Gasket for Defender & Discovery 1 300TDi

    (7)

    Direct Replacement

    £2.29 Inc. VAT
    £1.91 Ex. VAT
    A new replacement water pump gasket AND 'P' gasket that fits behind the water pump and timing cover.Quality replacement parts, equivalent to Land Rover part numbers: ERR3284 & PET100790Suitable for the following models: Land Rover: Defender, 300TDi,...
    ERR3284_PET100790G
    £2.29 Inc. VAT
    £1.91 Ex. VAT
    Qty in Cart: 0
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  • JGS 4X4 EGR Valve Blanking Delete Kit With Intercooler Hose for Discovery 1 300TDi, black rubber hose, gasket, and mounting screws for engine pipe replacement. JGS 4X4 EGR Valve Blanking Delete Kit With Intercooler Hose for Discovery 1 300TDi, black rubber hose, gasket, and mounting screws for engine pipe replacement.

    EGR Valve Blanking Delete Kit With Intercooler Hose for Discovery 1 300TDi

    (7)

    JGS4X4

    £10.59 Inc. VAT
    £8.82 Ex. VAT
    Complete EGR removal kit. Kit Contains:Laser cut 4mm steel EGR Blanking PlateReplacement GasketNew Steel BoltsReplacement Top Inlet/Intercooler Hose Benefits:Reduce SmokeIncrease PowerIncrease TorqueIncrease MPGImproves Drivability An easy way to remove...
    ESR3025_EGR2SS
    £10.59 Inc. VAT
    £8.82 Ex. VAT
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  • Direct Replacement Radiator And Engine Oil Cooler - BTP1823S for Defender & Discovery 1 200TDi, automotive radiator and oil cooler with metal fins and hoses. Direct Replacement Radiator And Engine Oil Cooler - BTP1823S for Defender & Discovery 1 200TDi, front view of vehicle radiator and oil cooler showing cooling fins and connection ports.

    Radiator And Engine Oil Cooler for Defender & Discovery 1 200TDi

    (6)

    Direct Replacement

    £144.99 Inc. VAT
    £120.82 Ex. VAT
    A new replacement radiator with integrated engine oil cooler. This is a quality replacement aluminium cored radiator. Aluminium is lighter and also offers better heat transfer so will be more efficient at cooling over the standard radiator. A quality...
    BTP1823S
    £144.99 Inc. VAT
    £120.82 Ex. VAT
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  • Direct Replacement Viscous Fan Coupling Unit for Defender Discovery 1 300 TDi, metallic fan clutch with fins and central mounting hub. Direct Replacement Viscous Fan Coupling Unit for Defender Discovery 1 300 TDi, metallic fan clutch with fins and central mounting hub.

    Viscous Fan Coupling Unit for Defender Discovery 1 300 TDi

    (9)

    Direct Replacement

    £37.99 Inc. VAT
    £31.66 Ex. VAT
    Quality replacement radiator fan viscous coupling unit. A quality replacement part, equivalent to Land Rover part number: ERR2266Suitable for the following models: Land Rover: Discovery 1, 300 TDi, 1994-1998 Land Rover: Defender, 300 TDi, 1994-1998
    ERR2266
    £37.99 Inc. VAT
    £31.66 Ex. VAT
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  • Thermostat & Radiator Brass Bleed Screw Plug for Discovery 1 Tdi from JGS4x4

    Thermostat & Radiator Brass Bleed Screw Plug for Discovery Tdi

    (1)

    Direct Replacement

    £4.99 Inc. VAT
    £4.16 Ex. VAT
    A replacement brass bleed plug that fits the thermostat housing and radiator bleed screw hole, much tougher than the original black plastic plug. Comes complete with new rubber O-ring. It can also be used to replace the plastic filler level plugs on the...
    ERR4686B-1
    £4.99 Inc. VAT
    £4.16 Ex. VAT
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  • Airtex Water Pump OEM for Discovery 1 200TDi, metal water pump with pulley and mounting flange for engine cooling system.

    Water Pump OEM for Discovery 1 200TDi

    (4)

    Airtex

    £52.89 Inc. VAT
    £44.07 Ex. VAT
    Discovery 1/Range Rover Classic 200Tdi OEM engine coolant water pump. SUITABLE FOR THE FOLLOWING LAND ROVER MODELS:Discovery 1, 200Tdi, 1989-1994Range Rover Classic, 200Tdi, 1971-1994 EQUIVALENT TO LAND ROVER PART NUMBER(S): RTC6395...
    RTC6395G
    £52.89 Inc. VAT
    £44.07 Ex. VAT
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  • Direct Replacement Radiator Top Hose for Discovery 1 300TDi, black rubber radiator hose with a curved shape.

    Radiator Top Hose for Discovery 1 300TDi

    (5)

    Direct Replacement

    £2.59 Inc. VAT
    £2.16 Ex. VAT
    A new replacement rubber top radiator hose. A quality replacement part, equivalent to Land Rover part number: ESR2491Suitable for the following models:Land Rover: Discovery 1, 2.5 300TDi, 1994-1998. Land Rover: Range Rover Classic, 2.5 300TDi, 1994-1995
    ESR2491
    £2.59 Inc. VAT
    £2.16 Ex. VAT
    Qty in Cart: 0
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    £2.59 Inc. VAT
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JGS4x4 is an independent supplier of parts and accessories. We are not affiliated with or endorsed by Jaguar Land Rover Limited. All references to vehicle models are used for identification and compatibility purposes only.