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Auxiliary Water Pump

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Auxiliary Water Pump for Audi A3 Quattro Q3 Volkswagen Beetle Passat 08-10 Jetta

Auxiliary Water Pump for Audi A3 Quattro Q3 Volkswagen Beetle Passat 08-10 Jetta

A-Premium
Part #APAWP017
CC,TT,Q3,Jetta,Eos,Q3 Quattro,A3,Passat,Beetle,A3 Quattro,Tiguan Limited,TT Quattro,GTI,Tiguan
5.0(1)
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$
45.99
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Auxiliary Water Pump for Audi Q7 2009-2015 A6 Quattro Q5 S6 Volkswagen Touareg

Auxiliary Water Pump for Audi Q7 2009-2015 A6 Quattro Q5 S6 Volkswagen Touareg

A-Premium
Part #APAWP008
A8 Quattro,S6,Q5,S7,A6,S8,Q7,RS7,A6 Quattro,A7 Quattro,Touareg
5.0(2)
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$
56.99
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Auxiliary Water Pump for BMW 550i 650i 750i M5 2013-2016 M6 X5 2011-2018 X6 4.4L

Auxiliary Water Pump for BMW 550i 650i 750i M5 2013-2016 M6 X5 2011-2018 X6 4.4L

A-Premium
Part #APAWP034
550i,650i,M6 Gran Coupe,550i xDrive,M5,M6,550i GT xDrive,750i,650i Gran Coupe,750Li,750Li xDrive,650i xDrive Gran Coupe,650i xDrive,550i GT,750i xDrive,X5,X6
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$
52.99
Ships within 24 hours
Auxiliary Water Pump for Toyota Prius 2004-2009 L4 1.5L

Auxiliary Water Pump for Toyota Prius 2004-2009 L4 1.5L

A-Premium
Part #APAWP013
L4 1.5L, Drive Motor Inverter Cooler, with Bracket & Gasket
Prius
5.0(1)
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$
57.99
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Auxiliary Water Pump for Audi A4 Quattro 13-16 A5 Quattro A6 Volkswagen Touareg

Auxiliary Water Pump for Audi A4 Quattro 13-16 A5 Quattro A6 Volkswagen Touareg

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Part #APAWP005
A4 Quattro,A4,A5,A6,A5 Quattro,Touareg,allroad
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$
49.99
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Auxiliary Water Pump for Mercedes-Benz C230 E300 Volkswagen Crafter Van

Auxiliary Water Pump for Mercedes-Benz C230 E300 Volkswagen Crafter Van

A-Premium
Part #APAWP001
Recirculation Pump, with Bracket
CLS500,GL350,S550e,GLE43 AMG,S65 AMG,E550,GL63 AMG,C400,SL63 AMG,ML63 AMG,SLK250,C350e,E63 AMG S,CLA200,Maybach S600,SL550,Crafter Van,Maybach S560,SL65 AMG,Sprinter 3500
5.0(2)
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$
53.99
Ships within 24 hours
Auxiliary Water Pump for Audi RS7 2014-2018 Volkswagen Jetta 2013-2016

Auxiliary Water Pump for Audi RS7 2014-2018 Volkswagen Jetta 2013-2016

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Part #APAWP032
w/o Bracket
Jetta,Passat,RS5,RS7
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$
49.99
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Auxiliary Water Pump for Audi A3 2017-2020 TT TTS Quattro Volkswagen Golf Passat

Auxiliary Water Pump for Audi A3 2017-2020 TT TTS Quattro Volkswagen Golf Passat

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Part #APAWP039
S3,TT,A3,Golf Alltrack,Golf R,Golf,Passat,A3 Quattro,TT Quattro,TTS Quattro,Golf SportWagen,GTI
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$
58.99
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Auxiliary Water Pump for Audi A3 A6 TT Quattro Q7 Volkswagen Golf Jetta Passat

Auxiliary Water Pump for Audi A3 A6 TT Quattro Q7 Volkswagen Golf Jetta Passat

A-Premium
Part #APAWP015
w/o Bracket
Golf,Jetta,Phaeton,Q7,R8,A6 Quattro,Eos,Allroad Quattro,R32,Passat,A3 Quattro,EuroVan,TT Quattro,Touareg
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$
54.99
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Auxiliary Water Pump for Audi A6 TT Quattro 01-06 S4 Volkswagen Golf 02-06 Jetta

Auxiliary Water Pump for Audi A6 TT Quattro 01-06 S4 Volkswagen Golf 02-06 Jetta

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Part #APAWP016
TT,S4,Golf,Jetta,A6,A6 Quattro,TT Quattro
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$
53.99
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Auxiliary Water Pump with Rubber Bracket for BMW X5 01-06 525i 01-03 528i 530i

Auxiliary Water Pump with Rubber Bracket for BMW X5 01-06 525i 01-03 528i 530i

A-Premium
Part #APAWP022
w/ Rubber Bracket
528i,525i,X5,530i
Check if this fits your vehicle
$
54.99
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Auxiliary Water Pump for Mercedes-Benz G550 CLK320 Chrysler Dodge Freightliner

Auxiliary Water Pump for Mercedes-Benz G550 CLK320 Chrysler Dodge Freightliner

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Part #APAWP030
300TE,300E,300D,300TD,G55 AMG,500E,G550,Sprinter 3500,400E,CLK320,SLK230,SLK320,E320,E420,260E,Sprinter 2500,G500,E500,C220,Crossfire
Check if this fits your vehicle
$
61.99
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Auxiliary Water Pump for Volkswagen Beetle 1999-2005 Golf EuroVan Passat Jetta

Auxiliary Water Pump for Volkswagen Beetle 1999-2005 Golf EuroVan Passat Jetta

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Part #APAWP023
Golf,Jetta,Passat,Beetle,Corrado,EuroVan
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$
49.99
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Auxiliary Water Pump with Installation Package for Nissan Pathfinder 2005-2012

Auxiliary Water Pump with Installation Package for Nissan Pathfinder 2005-2012

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Part #APAWP020
V6 4.0L, with Installation Package
Pathfinder
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$
62.99
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Auxiliary Water Pump for Ford F-250 Super Duty 08-10 F-350 F-450

Auxiliary Water Pump for Ford F-250 Super Duty 08-10 F-350 F-450

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Part #APAWP014
With Bracket;Diesel
F-350 Super Duty,F-450 Super Duty,F-550 Super Duty,F-250 Super Duty
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$
78.99
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Auxiliary Water Pump for Mercedes-Benz C230 E350 GLK350 SL400 SL500

Auxiliary Water Pump for Mercedes-Benz C230 E350 GLK350 SL400 SL500

A-Premium
Part #APAWP021
With Bracket, Recirculation Pump
SL550,E350,SLK55 AMG,E550,SL63 AMG,C300,E400,SL400,GLK350,C230,C350,C250,C63 AMG,GLK250
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$
60.99
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Auxiliary Water Pump for A6 Quattro 2009-2016 A6 A7 Quattro 2012-2016 Q7

Auxiliary Water Pump for A6 Quattro 2009-2016 A6 A7 Quattro 2012-2016 Q7

A-Premium
Part #APAWP038
To Gear Oil Cooler
A6,A7,Q7,A6 Quattro,A7 Quattro
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$
47.99
Ships within 24 hours
Auxiliary Water Pump for Mercedes-Benz C280 E400 GLE400 GLS550 ML400 S550 SL450

Auxiliary Water Pump for Mercedes-Benz C280 E400 GLE400 GLS550 ML400 S550 SL450

A-Premium
Part #APAWP029
CLS400,GL550,GL450,GLE400,GLE450 AMG,C32 AMG,GLE43 AMG,R63 AMG,S65 AMG,SL600,CL65 AMG,E550,GL63 AMG,ML63 AMG,SL400,CL550,ML400,C280,E55 AMG,GLE63 AMG
Check if this fits your vehicle
$
77.99
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Auxiliary Water Pump for Audi A4 A4 Quattro 2009-2012 A5 Quattro 2010-2011 Q5

Auxiliary Water Pump for Audi A4 A4 Quattro 2009-2012 A5 Quattro 2010-2011 Q5

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Part #APAWP033
with Rubber Bracket
A4 Quattro,A4,A5,Q5,A5 Quattro
Check if this fits your vehicle
$
59.99
Ships within 24 hours
Auxiliary Water Pump for Cadillac Catera 1997-2001 GMC Pontiac Chevrolet Saab

Auxiliary Water Pump for Cadillac Catera 1997-2001 GMC Pontiac Chevrolet Saab

A-Premium
Part #APAWP024
9-5,Montana,Sierra 1500,Silverado 1500 Classic,Venture,Silhouette,Sierra 1500 Classic,9000,Silverado 1500
4.0(1)
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$
52.99
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Auxiliary Water Pump for Mercedes-Benz C230 02-07 C280 C350 CLK350 CLK500 CLK550

Auxiliary Water Pump for Mercedes-Benz C230 02-07 C280 C350 CLK350 CLK500 CLK550

A-Premium
Part #APAWP025
CLK63 AMG,C32 AMG,CLK550,SL65 AMG,CLK320,CLK350,C320,C55 AMG,C230,C240,C350,CLK500,C280,CLK55 AMG
Check if this fits your vehicle
$
59.99
Ships within 24 hours
Auxiliary Water Pump for Mercedes-Benz ML320 98-03 ML350 ML430 ML500

Auxiliary Water Pump for Mercedes-Benz ML320 98-03 ML350 ML430 ML500

A-Premium
Part #APAWP002
Recirculation Pump
ML320,ML430,ML55 AMG,ML500,ML350
Check if this fits your vehicle
$
57.99
Ships within 24 hours
Auxiliary Water Pump for Mini Cooper 2007-2015 Cooper Countryman Paceman

Auxiliary Water Pump for Mini Cooper 2007-2015 Cooper Countryman Paceman

A-Premium
Part #APAWP035
with Bracket
Cooper Paceman,Cooper Countryman,Cooper
Check if this fits your vehicle
$
70.99
Ships within 24 hours
Auxiliary Water Pump with Bracket for Volkswagen Passat 01-05 Audi A6 A6 Quattro

Auxiliary Water Pump with Bracket for Volkswagen Passat 01-05 Audi A6 A6 Quattro

A-Premium
Part #APAWP040
With Bracket
Passat,A6,A6 Quattro
Check if this fits your vehicle
$
34.99
Ships within 24 hours
Auxiliary Water Pump with Installation Package for Ford Escape 2005-2008

Auxiliary Water Pump with Installation Package for Ford Escape 2005-2008

A-Premium
Part #APAWP018
with Installation Package, with Gasket;ELECTRIC/GAS
Escape,Tribute,Mariner
Check if this fits your vehicle
$
52.99
Ships within 24 hours
Auxiliary Water Pump with Rubber Bracket for BMW X5 2007-2018 L6 3.0L V8 4.8L

Auxiliary Water Pump with Rubber Bracket for BMW X5 2007-2018 L6 3.0L V8 4.8L

A-Premium
Part #APAWP028
w/ Rubber Bracket
X5
Check if this fits your vehicle
$
58.99
Ships within 24 hours
Auxiliary Water Pump for Audi A5 Quattro 2012-2017 Q5 Q7 Volkswagen Jetta Passat

Auxiliary Water Pump for Audi A5 Quattro 2012-2017 Q5 Q7 Volkswagen Jetta Passat

A-Premium
Part #APAWP006
A4 Quattro,Jetta,A5,Passat,Q5,Q7,A5 Quattro
Check if this fits your vehicle
$
62.99
Ships within 24 hours
Auxiliary Water Pump for Mercedes-Benz CL550 CL600 07-14 S350 S550 07-13 S65 AMG

Auxiliary Water Pump for Mercedes-Benz CL550 CL600 07-14 S350 S550 07-13 S65 AMG

A-Premium
Part #APAWP026
w/ Bracket, w/o Auxiliary Heater, Recirculation Pump
S63 AMG,CL550,S600,S400,S65 AMG,CL65 AMG,S550,CL63 AMG,S350,CL600,Maybach S550
Check if this fits your vehicle
$
65.99
Ships within 24 hours
Auxiliary Water Pump with Bracket for Volkswagen Passat 06-15 CC Passat CC 3.6L

Auxiliary Water Pump with Bracket for Volkswagen Passat 06-15 CC Passat CC 3.6L

A-Premium
Part #APAWP041
With Bracket
CC,Passat,Passat CC
Check if this fits your vehicle
$
38.99
Ships within 24 hours
Auxiliary Water Pump for Audi S4 2004-2009 RS4 2007-2008 V8 4.2L

Auxiliary Water Pump for Audi S4 2004-2009 RS4 2007-2008 V8 4.2L

A-Premium
Part #APAWP003
with Rubber Bracket
S4,RS4
Check if this fits your vehicle
$
41.99
Ships within 24 hours
1-20 of 110 Results
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What is an engine auxiliary water pump?

An engine auxiliary water pump, also known as a secondary water pump or electric water pump, is a handy device in a car's cooling system that helps regulate the engine's temperature. It's like a backup pump that works alongside the main water pump to ensure the engine stays cool and doesn't overheat.

An auxiliary water pump is electrically powered and operates independently of the engine speed. It continues to circulate coolant even when the engine is off, providing extra cooling when it's needed most. The auxiliary water pump comes into play in situations where the engine requires additional cooling support. For instance, when you're stuck in traffic or idling for an extended period, the main pump alone may not be able to circulate enough coolant to keep the engine temperature within the desired range. That's when the auxiliary pump kicks in, ensuring the coolant flows properly to dissipate heat effectively.

Auxiliary water pump failure symptoms

When an auxiliary water pump starts to fail or malfunctions, it can exhibit several symptoms that indicate there may be a problem. You may notice:

  • Engine overheating: The engine may start to overheat, as indicated by a rising temperature gauge or warning message.
  • Reduced cooling system efficiency: Engine temperature may rise quickly or fluctuate erratically due to inadequate cooling.
  • Lack of cabin heating: Reduced or no heat output from the vents when the heater is on.
  • Unusual noises: Grinding, rattling, or whining sounds coming from the pump area.
  • Coolant leaks: Puddles of coolant under the vehicle or a sweet odor from the engine bay.

Auxiliary water pump vs water pump, what are the differences?

The auxiliary water pump and water pump are two distinct components with different functions in a vehicle's cooling system. The main difference between an auxiliary water pump and an engine water pump lies in their functions and how they operate within the vehicle's cooling system

Function

  • Engine water pump: Circulates coolant throughout the engine, cylinder heads, and radiator to maintain optimal engine temperature.
  • Auxiliary water pump: Provides supplemental coolant circulation and assists the primary water pump in specific situations to prevent engine overheating.

Power source and operation

  • Engine water pump: Mechanically driven by the engine, using a belt or chain connected to the engine's crankshaft.
  • Auxiliary water pump: Electrically powered and operates independently of the engine speed, controlled by the vehicle's ECU or a separate control module.

Usage

  • Engine water pump: Operates continuously whenever the engine is running to ensure consistent coolant flow and regulate engine temperature.
  • Auxiliary water pump: Used in specific situations like idle or low-speed conditions, or when additional cooling is needed to support the primary water pump.

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