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Porsche // 997 (911) MK2 2009-2012 // 911 (997) GT3 CUP 2010
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The BOSCH Auxiliary Coolant Pump Rear End is a premium OEM-quality electric coolant pump manufactured by Bosch, designed to support coolant circulation within the vehicle’s rear-mounted cooling and thermal management systems. Operating independently of engine speed, this auxiliary pump helps maintain consistent coolant flow to critical components, supporting temperature regulation, heating performance, and overall cooling system efficiency.
Fits:
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Diagram Ref No 22
Commonly used in modern Porsche thermal management systems, the auxiliary coolant pump assists with coolant circulation during specific operating conditions, including engine shutdown phases, low engine speeds, and demand-controlled cooling strategies. Manufactured to Bosch’s exacting standards, it delivers reliable operation, efficient coolant flow, and long service life.
What This Product Does:
- Circulates coolant through designated rear cooling circuits
- Supports the vehicle’s thermal management system
- Operates independently of engine speed when required
- Helps regulate temperatures of critical vehicle systems
- Maintains coolant flow during specific operating conditions
- Supports efficient heating and cooling system performance
Symptoms Of Wear Or Failure:
- Cooling system warning messages or fault codes
- Reduced coolant circulation efficiency
- Inconsistent cabin heating performance
- Elevated operating temperatures in certain systems
- Electric pump noise, whining, or buzzing sounds
- Coolant leaks around the pump housing
- Thermal management system faults
- Reduced performance of auxiliary cooling functions
Why Replacement Matters:
- Restores efficient coolant flow through auxiliary circuits
- Supports proper operation of the vehicle’s cooling system
- Helps maintain stable operating temperatures
- Improves heating and thermal management performance
- Reduces the risk of overheating-related component stress
- Prevents cooling system fault codes and warning messages
- Supports long-term reliability of engine and ancillary systems
- Maintains OEM-level performance, efficiency, and driving comfort
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A796556700
The product you are viewing cross references to these numbers