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Porsche > 991 (911) MK1 2012-2016 > 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16 > Engine Cooling >

Water / Coolant Pumps

Water / Coolant Pumps

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DISPLAYING 17 to 20 (of 20 products)
1 2
Water pump tube. Porsche 991.1 - 9A110602502, 0PB121512A, 0PB121512
4
Water pump tube. Porsche 991.1
Special Order item
0PB121512A
Product Information
Product Information
Water pump tube.



Fits:
Porsche 991.1 Carrera 2012-16
Porsche 991 Turbo 2014-20

Click 'Zoom in' for large parts diagram.
Diagram ref no 13

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Related, superseded, cross reference or alternative numbers for comparison.

0PB121512A
9A110602502
0PB121512A
0PB121512

The product you are viewing cross references to these numbers
Water pump. Porsche 987/981 Boxster / 987/981 Cayman / 997 / 991 / 992 - 9A110603800, 9A110603802, 9A110603803, 9A110603804, 9A110603807, 9A110603808, 9A110604800, 9A110604801, 9A110604802, 0PB121035A
5
Water pump. Porsche 987/981 Boxster / 987/981 Cayman / 997 / 991 / 992
0PB121035A/8
Product Information
Product Information

OE Match water pump with a mounting gasket for selected Porsche Boxster, Cayman and 911 applications. Match the vehicle specification against the detailed applications below.


Fits:

  • Porsche Boxster 987 MKII 2.9L 2009-2012
  • Porsche Boxster S 987 MKII 3.4L 2009-2012
  • Porsche Boxster 981 2.7L 2012-16
  • Porsche Boxster 981 S / GTS 3.4L 2012-16
  • Porsche Boxster 981 Spyder 3.8L 2016
  • Porsche Boxster 718 Spyder RS 4.0L (420 Bhp)
  • Porsche 997 MKII Carrera C2 3.6L 2009-12
  • Porsche 997 MKII Carrera C4 3.6L 2009-12
  • Porsche 997 MKII Carrera C2S 3.8L 2009-12
  • Porsche 997 MKII Carrera C4S 3.8L 2009-12
  • Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
  • Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
  • Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
  • Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
  • Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
  • Porsche 992.1 GT3 RS 4.0L 2022-24
  • Porsche 992.2 GT3 2025>>
  • Porsche Cayman 2.9L 987C MKII 2009-12
  • Porsche Cayman S / R 3.4L 987C MKII 2009-12
  • Porsche Cayman 2.7L 981 2013-16
  • Porsche Cayman S / GTS 3.4L 981 2013-16
  • Porsche Cayman GT4 3.8L 2015-16
  • Porsche Cayman 718 GT4 RS 718 4.0L


NOTE: Water Pump COMES WITH MOUNTING GASKET.


What This Product Does

The pump moves coolant through the engine and cooling circuit, transferring heat towards the radiators and supplying the heater circuit.


Functions

  • Circulates coolant through the cooling system.
  • Supports heat transfer away from the engine.
  • Supplies coolant flow to the cabin heater.


Symptoms of Fault

  • Wetness or dried coolant deposits near the pump.
  • A whining or grinding sound around the pump bearing.
  • Movement or wobbling at the pulley.
  • Unstable coolant temperature or overheating.
  • Repeated coolant-level warnings.
  • Reduced heater output where coolant circulation is inadequate.


Why Replacement Matters

Seal deterioration, bearing damage or an impaired impeller can cause coolant loss or insufficient circulation. Renewing a confirmed faulty pump addresses these faults; inspect the surrounding cooling components to identify any additional causes.


OE Reference

  • 0PB121035A
  • 9A110604802


FAQs

Is a gasket included?
Yes. A mounting gasket is supplied with the pump.

Must a failing pump leak?
No. Bearing deterioration or restricted circulation can occur without an obvious coolant leak.

Can another component cause similar symptoms?
Yes. Thermostat faults, radiator restrictions, trapped air or cooling-fan problems can also cause overheating. Confirm the cause before replacing the pump.

Should the thermostat also be renewed?
Assess its condition during the repair. Overlapping access may make inspection practical, but thermostat replacement depends on the diagnosis.



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

0PB121035A
9A110603800
9A110603802
9A110603803
9A110603804
9A110603807
9A110603808
9A110604800
9A110604801
9A110604802
0PB121035A

The product you are viewing cross references to these numbers
Water Pump. Porsche 987/981/718 Boxster / 987/981/718 Cayman / 997 / 991 / 992 - 9A110604800, 9A110604801, 9A110604802, 0PB121035A, 9A110603800, 9A110603802, 9A110603803, 9A110603804, 9A110603807, 9A110603808
5
Water Pump. Porsche 987/981/718 Boxster / 987/981/718 Cayman / 997 / 991 / 992
Special Order item
0PB121035A
Product Information
Product Information
Water Pump.

Fits:

  • Porsche Boxster 987 MKII 2.9L 2009-2012
  • Porsche Boxster S 987 MKII 3.4L 2009-2012
  • Porsche Boxster 981 2.7L 2012-16
  • Porsche Boxster 981 S / GTS 3.4L 2012-16
  • Porsche Boxster 981 Spyder 3.8L 2016
  • Porsche Boxster Spyder RS 718 4.0L (420 Bhp)
  • Porsche 997 MKII Carrera C2 3.6L 2009-12
  • Porsche 997 MKII Carrera C4 3.6L 2009-12
  • Porsche 997 MKII Carrera C2S 3.8L 2009-12
  • Porsche 997 MKII Carrera C4S 3.8L 2009-12
  • Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
  • Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
  • Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
  • Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
  • Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
  • Porsche 992.1 GT3 RS 4.0L 2022-24
  • Porsche 992.2 GT3 2025>>
  • Porsche Cayman 2.9L 987C MKII 2009-12
  • Porsche Cayman S / R 3.4L 987C MKII 2009-12
  • Porsche Cayman 2.7L 981 2013-16
  • Porsche Cayman S / GTS 3.4L 981 2013-16
  • Porsche Cayman GT4 3.8L 2015-16
  • Porsche Cayman GT4 RS 718 4.0L



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

0PB121035A
9A110604800
9A110604801
9A110604802
0PB121035A
9A110603800
9A110603802
9A110603803
9A110603804
9A110603807
9A110603808

The product you are viewing cross references to these numbers
Water pump. Porsche 987/981/718 Boxster / 987/981/718 Cayman / 997 / 991 / 992 - 9A110603800, 9A110603802, 9A110603803, 9A110603804, 9A110603807, 9A110603808, 9A110604800, 9A110604801, 9A110604802, 0PB121035A
5
Water pump. Porsche 987/981/718 Boxster / 987/981/718 Cayman / 997 / 991 / 992
0PB121035A/1
Product Information
Product Information
Replacement water pump with gasket.

Fits:

  • Porsche Boxster 987 MKII 2.9L 2009-2012
  • Porsche Boxster S 987 MKII 3.4L 2009-2012
  • Porsche Boxster 981 2.7L 2012-16
  • Porsche Boxster 981 S / GTS 3.4L 2012-16
  • Porsche Boxster 981 Spyder 3.8L 2016
  • Porsche Boxster 718 Spyder RS 4.0L (420 Bhp)
  • Porsche 997 MKII Carrera C2 3.6L 2009-12
  • Porsche 997 MKII Carrera C4 3.6L 2009-12
  • Porsche 997 MKII Carrera C2S 3.8L 2009-12
  • Porsche 997 MKII Carrera C4S 3.8L 2009-12
  • Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
  • Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
  • Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
  • Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
  • Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
  • Porsche 992.1 GT3 RS 4.0L 2022-24
  • Porsche 992.2 GT3 2025>>
  • Porsche Cayman 2.9L 987C MKII 2009-12
  • Porsche Cayman S / R 3.4L 987C MKII 2009-12
  • Porsche Cayman 2.7L 981 2013-16
  • Porsche Cayman S / GTS 3.4L 981 2013-16
  • Porsche Cayman 981 GT4 3.8L 2015-16
  • Porsche Cayman 718 GT4 RS 718 4.0L


NOTE: Water Pump COMES WITH MOUNTING GASKET.

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

0PB121035A
9A110603800
9A110603802
9A110603803
9A110603804
9A110603807
9A110603808
9A110604800
9A110604801
9A110604802
0PB121035A

The product you are viewing cross references to these numbers
DISPLAYING 17 to 20 (of 20 products)
1 2
Also found on these pages
About Water / Coolant Pumps

Water / Coolant Pumps – Reliable Engine Cooling for Porsche Vehicles

Water / coolant pumps are at the heart of your Porsche’s cooling system. Their job is to circulate coolant through the engine, radiator, and heater core, maintaining the correct operating temperature and preventing overheating. A properly functioning water pump ensures efficient heat transfer, optimal performance, and long-term engine reliability.

At Design911, we supply a wide range of genuine and high-quality water pumps for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, Panamera and the transaxle cars. Each pump is precision-engineered to deliver consistent coolant flow, high durability, and dependable performance - ensuring your Porsche’s engine stays cool under all driving conditions.

What Do Water Coolant Pumps Do?

Water pumps are a critical part of your engine’s temperature control system. They:

  • Circulate coolant between the engine block, radiator, and heater system.
  • Regulate temperature by dispersing heat efficiently throughout the system.
  • Maintain coolant pressure for consistent engine operation.
  • Support performance and longevity, preventing damage from excessive heat.

Without a properly working water pump, coolant circulation stops — leading to overheating, loss of performance, and potential engine failure.

Why Do Water Coolant Pumps Fail?

Even the most durable water pumps can fail over time due to heat, age, and coolant contamination. Common causes of failure include:

  • Bearing wear or seal leaks caused by prolonged use or poor coolant quality.
  • Corrosion or pitting from old or incompatible coolant mixtures.
  • Cracked impellers or worn components reducing flow efficiency.
  • Coolant leaks around the housing or pulley.
  • Age-related wear, especially in high-mileage vehicles.

Signs of failure include visible coolant leaks, high engine temperature, whining noises from the pump area, or reduced cabin heating.

Why Replace a Faulty Water Coolant Pump?

A failing water pump can cause severe engine overheating, loss of coolant, or total breakdown. Replacing a worn pump restores reliable cooling and helps protect your engine from costly damage.

Benefits of replacement include:

  • Restored coolant circulation and cooling efficiency.
  • Improved engine reliability and performance.
  • Prevention of leaks, overheating, and corrosion.
  • Long-lasting, high-quality construction for dependable operation.

All water pumps in this range are built using high-strength materials, precision impellers, and sealed bearings designed to deliver durability, quiet operation, and efficient coolant flow over time.


Porsche Water Pumps: Common Issues, Fixes, and Upgrades #porsche #porscheparts #porscheupgrade

In this tech talk, Lawrence from Design 911 breaks down everything you need to know about water pumps for Porsche models. From the iconic 911 to the Cayenne and Macan, discover why the water pump is one of the most crucial components in your car’s cooling system. 

Learn how water pumps work, the common signs of failure, and why regular replacement is essential to avoid catastrophic engine damage.

Whether you're maintaining your Porsche or considering a water pump upgrade, this video covers original and aftermarket options, as well as the pros and cons of plastic vs. metal impellers. Watch now to keep your Porsche running at its best!
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