Water pump. Porsche 971 Panamera 4.0L / 9YA Cayenne 4.0L  ❭  PAB121014C

Water pump. 
This is an original equipment (OE) water pump supplied by Porsche for the coolant circulation system of high-performance petrol engines. The engine water pump drives coolant flow through the engine’s cooling passages, radiator, and associated components. It ensures that heat generated by the engine is effectively moved out of the combustion chambers and out through the radiator, maintaining stable engine temperatures and preventing overheating during all driving conditions - from daily street use to spirited driving and highway cruising.

Fits
Porsche 971.1 Panamera turbo 4.0ltr V8 - 2018 to 2020
Porsche 971.1 Panamera turbo S E-Hybrid 4.0ltr V8 - 2018 to 2020
Porsche 971.2 Panamera turbo 4.0ltr V8 - 2021 to 2023
Porsche 971.2 Panamera turbo S 4.0ltr V8 - 2021 to 2023
Porsche 971.2 Panamera turbo S E-Hybrid 4.0ltr V8 - 2021 to 2023
Porsche 971.2 Panamera GTS 4.0ltr V8 - 2021 to 2023

Porsche 9YA Cayenne GTS 4.0ltr V8 - 2018 to 2023
Porsche 9YA Cayenne turbo 4.0ltr V8 - 2018 to 2023
Porsche 9YA Cayenne turbo S E-Hybrid 4.0ltr V8 - 2018 to 2023

Diagram ref no 1

Function:
•  Circulates coolant throughout the engine cooling system.
•  Supports stable engine operating temperatures to prevent thermal stress.
•  Facilitates heat exchange between the engine and radiator.
•  Protects the engine from temperature-related wear and heat-induced failure.
•  Often includes the pump impeller, shaft, bearings, and seal optimized for longevity and performance.

A failing water pump can lead to coolant leaks, overheating, strange noises from the drive area, and eventually engine damage if not addressed.

The engine water pump is a critical component in maintaining the performance and durability of your Porsche’s engine. Because it constantly circulates coolant, its bearings and internal seals are subject to wear over time. A failing pump can lead to:
•  Coolant leakage
•  Overheating engine
•  Erratic temperature gauge readings
•  Unusual noises from the cooling system
•  Increased stress on the thermostat and radiator.

When to replace. Replace the water pump when:
•  There is visible coolant leakage around the pump or weep hole
•  The engine overheats or cooling performance degrades
•  You hear noise or roughness from the pump area
•  You are servicing the cooling system or replacing the timing belt/drive components
•  The pump shows age-related wear or operational irregularities
•  Timely replacement helps avoid costly engine damage and ensures reliable heat management.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PAB121014C

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