Performance Water Pump & Thermostat Kit for Land Rover Range Rover Sport (2010-2018) 5.0L

Heavy-Duty Water Pump & Thermostat Cooling Overhaul Kit for 2010-2018 Land Rover Range Rover Sport (L320 / L494)

What it Does: The Performance Water Pump & Thermostat Kit replaces brittle factory cooling components on the 2010-2018 Range Rover Sport to eliminate catastrophic coolant leaks and maintain stable operating temperatures under high thermal loads.

The Stock Land Rover Range Rover Sport Plastic Coolant Pipe Weakness

Factory cooling systems on the supercharged AJ133 5.0L V8 are plagued by rapid embrittlement of the OEM composite crossover pipes and thermostat housing. Tucked beneath the supercharger, these plastic pipes endure intense heat cycles that cause their welded seams to degrade, crack, and fail catastrophically without warning. Furthermore, the factory mechanical water pump seals frequently weep under pressure, while OEM plastic bleeder screws strip out during routine servicing. In the L320 and L494 engine bays, sudden coolant loss causes near-instantaneous thermal runaway, warping aluminum cylinder heads and risking total engine failure.

The Engineering Solution

This comprehensive overhaul kit addresses OEM design flaws by replacing fragile molded plastic coolant paths with upgraded aluminum crossover pipes that resist extreme engine valley heat soak. The assembly includes a direct-fit replacement water pump engineered for cavitation resistance and continuous flow, paired with an OE-spec thermostat and pre-installed temperature sensor. High-grade copper bleeder hardware and heavy-duty outlet hoses with copper fittings replace factory plastic failure points, restoring high-pressure cooling reliability across the entire operating range.

What's Included

• 1 Thermostat with Integrated Sensor
• 1 Aluminum Coolant Crossover Pipe Set
• 1 Replacement Water Pump
• 1 Thermostat Outlet Hose with Copper Fittings
• 1 Copper Bleeder Screw & Crossover Plug
• 1 Heater Outlet Hose

Technical Specifications

Compatibility

• 2010-2013 Land Rover Range Rover Sport Supercharged (L320 Chassis, 5.0L Supercharged V8)
• 2014-2018 Land Rover Range Rover Sport Supercharged / HSE Dynamic (L494 Chassis, 5.0L Supercharged V8)
• Fits AJ126 3.0L Supercharged V6 and AJ133 5.0L Supercharged V8 applications matching listed OE references

Frequently Asked Questions & Fitment Warnings

Does this fit the L320 and L494 Range Rover Sport?

Yes, this is a direct fit for the 2010-2018 Land Rover Range Rover Sport equipped with the AJ133 5.0L supercharged engine and AJ126 3.0L supercharged applications. Does not fit naturally aspirated engines.

Do I need to bleed the cooling system after installing this kit?

Yes, a full coolant vacuum fill or thorough mechanical bleed via the included copper bleeder screw is required to prevent trapped air pockets inside the supercharger cooling jackets.

The Land Rover Precision Standard

Designed to maintain strict European operating tolerances, this cooling package eliminates common thermal faults while ensuring precise sensor integration without triggering check engine lights or ECU cooling circuit codes.