Additional Water Pump / Appendix. Porsche 955 Cayenne / 957 Cayenne  ❭  95510656101

The BOSCH Additional Water Pump / Auxiliary Coolant Pump is a premium OEM-quality electric coolant pump manufactured by Bosch, designed to provide supplementary coolant circulation within the vehicle’s cooling and heating systems. Operating independently of engine speed, this additional water pump helps maintain coolant flow through designated circuits, supporting efficient thermal management, cabin heating performance, and temperature control of critical engine and vehicle systems.

Fits:

• Porsche 955 Cayenne 3.2L V6 2003-06
• Porsche 957 Cayenne 3.6L 2007-10

Used in modern Porsche cooling systems, the auxiliary pump assists during specific operating conditions such as low engine speeds, after-run cooling, and demand-controlled thermal management. Manufactured to Bosch’s exacting standards, it delivers reliable operation, precise coolant circulation, and long-lasting durability.

What This Product Does:

• Provides additional coolant circulation through auxiliary cooling circuits
• Supports the vehicle’s thermal management system
• Operates independently of engine speed when required
• Assists cabin heating and coolant distribution
• Helps regulate temperatures of engine and ancillary components
• Supports after-run cooling and demand-controlled cooling functions

• Reduced cabin heating efficiency
• Cooling system warning messages or fault codes
• Poor coolant circulation through auxiliary circuits
• Inconsistent heating performance at idle
• Whining, buzzing, or unusual electric pump noises
• Coolant leaks around the pump housing
• Thermal management system faults
• Reduced effectiveness of after-run cooling functions

• Restores proper coolant circulation through auxiliary systems
• Supports efficient cabin heating performance
• Maintains stable operating temperatures for critical components
• Improves cooling system reliability and efficiency
• Reduces the risk of overheating and thermal stress
• Prevents cooling system fault codes and warning messages
• Supports after-run cooling and advanced thermal management functions
• Maintains OEM-level performance, comfort, and long-term vehicle reliability