Performance Water Pump Kit for Audi RS5 (2018-2025) 2.9L

Complete Water Pump Service Kit for 2018-2025 Audi RS5 (B9/B9.5)

What it Does: The Performance Water Pump Kit replaces the failure-prone factory mechanical coolant pump, thermostat, and thermal control valves on the 2018-2025 Audi RS5 to prevent overheating and maintain consistent thermal regulation across the twin-turbocharged system.

The Stock Audi RS5 Cooling System Weakness

Factory cooling systems on the B9/B9.5 RS5 equipped with the EA839 2.9L twin-turbo V6 are prone to failure from prolonged heat cycling. OEM water pumps utilize internal vacuum-actuated control sleeves and composite components that warp, degrade, and leak over time. This design flaw leads to internal coolant migration into vacuum lines, seized regulating sleeves, weeping drive bearings, and premature thermostat failure under elevated cylinder head temperatures.

The Engineering Solution

This coordinated service kit addresses common EA839 cooling bottlenecks by coupling a heavy-duty mechanical water pump with an aluminum impeller to resist high-RPM cavitation and thermal distortion. Featuring an OE-spec thermostat, rigid replacement coolant transfer pipe, fresh pulley, dual solenoid valves, and an upgraded thermal pneumatic valve, this kit restores full factory flow dynamics and isolates vacuum controls from coolant contamination.

What's Included

• 1 Engine Water Pump Assembly with Pulley
• 1 Thermostat
• 1 Water Pipe
• 1 Pulley
• 2 Solenoid Valves
• 1 Thermal Pneumatic Valve
• O-Ring and Fixing Bolt Hardware Set

Technical Specifications

Compatibility

• 2018-2019, 2021-2025 Audi RS5 Coupe (2.9L Gas Turbo)
• 2019, 2021-2025 Audi RS5 Sportback (2.9L Gas Turbo)
• 2022 Audi RS5 Coupe (2.9L Mild Hybrid Gas Turbo)
• 2022 Audi RS5 Sportback (2.9L Mild Hybrid Gas Turbo)

Frequently Asked Questions & Fitment Warnings

Does this fit the B9/B9.5 RS5?

Yes, this is a direct fit for the 2018-2025 Audi RS5 equipped with the EA839 2.9L twin-turbo engine. Does not fit earlier B8/B8.5 naturally aspirated 4.2L V8 models or 3.0T supercharged engines.

Do I need to perform a vacuum bleed after installing this kit?

Yes, the cooling system must be vacuum-filled and bled using the factory diagnostic service procedure to purge trapped air from the complex twin-turbo and intercooler circuits.

The Audi Precision Standard

Engineered to exact OEM tolerances, this comprehensive kit ensures strict European cooling performance, eliminates thermal degradation fault codes, and maintains optimal boost efficiency across all driving conditions.