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A water pump in the car brings movement into the cooling circuit


A water pump in a car moves the coolant around the engine in a circuit to allow heat exchange. In the process, it carries away the engine's high temperatures, preventing it from overheating. In addition, the coolant cools the engine. Constant circulation is important for this, and is provided by the coolant pump. In the section below, we present the types of coolant pumps, show why it can break down and how you can tell, and what to look for when buying water pumps.

Types of cooling water pumps
How can it break down and how can you recognize a defective coolant pump?
When should you change a water pump and what should you take into account?
What to consider when buying water pumps?

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PIERBURG Wasserumwälzpumpe Zusatzpumpe Standheizung VW AUDI SEAT SKODA 5N0965561

PIERBURG 7.01713.28.0 / für VAG 1.6 und 2.0 TDI-Modelle

Item No.: A18013W703
Manufacturer: PIERBURG
part number: 7.01713.28.0
???item.ean.code???: 4028977739163
Spannung_v: 12
Verwendung: Standheizung
Betriebsart: elektrisch
Baugruppe: Komfortsysteme
Mengeneinheit: Stück
83,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

PIERBURG Wasserpumpe + BEHR / MAHLE Thermostat für BMW E81-88 E90-93 E60 E61

für BMW 1er 116i 118i 120i 3er 316i 318i 320i 5er 520i

Item No.: PKT572W682
Manufacturer: PIERBURG
part number: 7.02853.20.0, TM 19 102
Delivery:

  • 1x Water Pump Piece - PIERBURG 7.02853.20.0
  • 1x Thermostat, coolant Piece - MAHLE TM 19 102
305,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

GEBA Wasserpumpe Water Pump MERCEDES-BENZ W204 S204 C218 A207 W212 S212 X204 CDI

MADE IN GERMANY | MIT DICHTUNG, FÜR 180-250 CDI-MOTOREN

Item No.: A12013W410
Manufacturer: GEBA
part number: 10875
???item.ean.code???: 4250835403125
Ausstattungsvariante: nicht variabel
64374267: mit Dichtungen
Betriebsart: mechanisch
Verwendung: Kühlwasser
Mengeneinheit: Stück
Herstellereinschraenkung: ohne Unterdrucksteue
Baugruppe: Kühlung
68,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
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GEBA Wasserpumpe + Dichtung für PORSCHE 911 (997 991) BOXSTER CAYMAN (987 981)

inkl. DICHTUNG | entspricht PORSCHE OE: 9A1 106 048 02

Item No.: A09013W412
Manufacturer: GEBA
part number: 15014
???item.ean.code???: 4250835405389
Ausstattungsvariante: mit Riemenscheibe
64374267: mit Dichtungen
Betriebsart: mechanisch
Verwendung: Kühlwasser
Mengeneinheit: Stück
Baugruppe: Kühlung
155,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
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GEBA Wasserpumpe Kühlwasserpumpe BMW 7er E65 E66 / 5er E60 E61 / X5 11517586780

MIT DICHTUNG | für 735/745/760i, 545i, 4.4i | Bj prüfen

Item No.: A02013W449
Manufacturer: GEBA
part number: 55090
64374267: mit Dichtungen
Betriebsart: mechanisch
Verwendung: Kühlwasser
Mengeneinheit: Stück
Baugruppe: Kühlung
62,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
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PIERBURG Wasserpumpe Kühlwasserpumpe für BMW 1er 3er 5er 6er 7er 7.02851.20.0

auch für BMW X1 E84 X3 E83 X5 E70 Z4 E85 E86 E89

Item No.: A02013W402
Manufacturer: PIERBURG
part number: 7.02851.20.0
???item.ean.code???: 4028977858376
Betriebsart: elektrisch
Verwendung: Kühlwasser
Mengeneinheit: Stück
Durchmesser_1_mm: 40
64374570: PI 1833
Spannung_v: 12
Durchmesser_2_mm: 40
Supplementary Article/Supplementary Info 2: mit Befestigungsmaterial
64374267: ohne Dichtung
Baugruppe: Kühlung
268,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
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PIERBURG Kühl- Wasserpumpe + Thermostat für AUDI SEAT SKODA VW 1.8 TFSI 2.0 TFSI

PIRBURG: 7.07856.08.0 | VAG: 06H 121 026 DN

Item No.: A18013W654
Manufacturer: PIERBURG
part number: 7.07856.08.0
???item.ean.code???: 6955813006043
64374570: SI 1856
64374267: with seal
Supplementary Article/Supplementary Info 2: mit Thermostat
Betriebsart: mechanisch
Verwendung: Kühlwasser
Mengeneinheit: Stück
Baugruppe: Kühlung
134,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

GEBA Wasserpumpe für PORSCHE 928 5.0 S / 5.0 GT / 5.4 GT 288/320/330/350 PS

inkl. DICHTUNG | entspricht PORSCHE OE: 928 106 015 20

Item No.: A09013W408
Manufacturer: GEBA
part number: 15010
???item.ean.code???: 4250835403798
64374267: with seal, mit Dichtungen
64377804: Grauguss
Betriebsart: mechanisch
Verwendung: Kühlwasser
Mengeneinheit: Stück
Baugruppe: Kühlung
Fahrzeugausstattung: für Fahrzeuge mit Automatikgetriebe
226,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

GEBA 15001 Wasserpumpe für PORSCHE 944 2.7 3.0 S2 ab 01.1989 + 968 3.0

inkl. DICHTUNG + ROHRSTUTZEN | entspr. OE: 94410602124

Item No.: A09013W401
Manufacturer: GEBA
part number: 15001
???item.ean.code???: 4250835403712
64374267: mit Dichtungen
Betriebsart: mechanisch
Verwendung: Kühlwasser
Mengeneinheit: Stück
Baugruppe: Kühlung
175,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

HERTH+BUSS JAKOPARTS Wasserpumpe für HONDA ACCORD V 2.0 TDi CIVIC VI 2.0 i D

Item No.: UNI733W802
Manufacturer: HERTH+BUSS JAKOPARTS
part number: J1514033
64374267: with seal
Verwendung: Kühlwasser
Mengeneinheit: Stück
Baugruppe: Kühlung
30,95 EUR

incl. VAT, excl. shipping costs

Currently not available at the time

HERTH+BUSS JAKOPARTS Wasserpumpe WaPu für HYUNDAI MITSUBISHI GALLOPER 2.5 TD

Item No.: UNI733W595
Manufacturer: HERTH+BUSS JAKOPARTS
part number: J1510532
64374267: with seal
Verwendung: Kühlwasser
Mengeneinheit: Stück
Baugruppe: Kühlung
55,95 EUR

incl. VAT, excl. shipping costs

Currently not available at the time

HERTH+BUSS JAKOPARTS Wasserpumpe für FORD FOCUS I MK I 1.8 16V MAZDA TRIBUTE 2.0

Baujahr beachten!

Item No.: UNI733W782
Manufacturer: HERTH+BUSS JAKOPARTS
part number: J1513068
64374267: with seal
Verwendung: Kühlwasser
Mengeneinheit: Stück
Baugruppe: Kühlung
29,95 EUR

incl. VAT, excl. shipping costs

Currently not available at the time
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The types of water pumps in the car

Basically, there are two types of water pumps:

  • Mechanical driven
  • Electrically driven

Water pumps, which are driven mechanically, are moved by the V-belt or toothed belt. Their speed is dependent on the engine speed, as the belts are driven by this.
If the coolant pumps are driven electrically, the speed is based on the cooling requirements. They are controlled independently of the engine speed. This means that they are more efficient and can even reduce fuel consumption.

It is also possible for an electrically driven auxiliary water pump to be installed in addition to the conventional mechanical cooling water pump. In extreme situations, the auxiliary water pump supports the actual water pump if it cannot provide enough power. It is therefore only switched on temporarily. The auxiliary water pump can be helpful in long traffic jams, for example, if not enough air can be drawn in to cool the vehicle while it is stationary and the temperature has to be regulated exclusively by the water pump.

How can it go defective and how can you recognize a defective coolant pump?

Water pumps in cars are exposed to high thermal and mechanical loads. Deposits in the cooling water can thus cause damage to the water pump. Likewise, the water pump wheel also wears out due to friction from the belt drive.

Typical symptoms of a defective water pump are leaks. This means that coolant is leaking out. Thus, a sinking coolant and an accompanying increase in engine temperature is a sign of a possibly defective water pump in the car. However, these signs can also indicate a defective cylinder head gasket or damaged idler pulleys. Grinding or hammering noises can also be an indication of a broken cooling water pump, as can the failure of the heater. In any case, a workshop should be visited as soon as possible to check the components in more detail. Only in this way can engine damage be avoided, which would cause high follow-up costs.

When should one change a water pump and what is to be considered thereby with?

In principle, there is also a maintenance interval for mechanical water pumps in the car, which usually goes hand in hand with the replacement of the V-belt or timing belt. The exact interval for your vehicle can be found in your car's documentation.

Since the water pump change is mostly very fiddly, since the belt drive must be removed with and thus some working hours accrue, the belt drive, thermostat, gasket and if necessary also the cylinder head gasket is always replaced in the same context. Similarly, the water pump change is also carried out when actually only the belt drive or the cylinder head gasket would have to be changed. Apart from the high amount of work, it makes sense to change all the components involved at the same time that the new spare parts are not prematurely closed by partially worn parts. The individual parts themselves are inexpensive to purchase. Only the high labor costs of the workshop have an impact here, since installation and removal are very time-consuming and thus do not have to be carried out several times.

Changing the water pumps of electrically operated coolant pumps is less time-consuming, as these are not connected to a belt drive. This means that the belt drive does not need to be removed, which significantly reduces the working time.

What to consider when buying water pumps?

If you want to buy a water pump, you should first start by entering the vehicle so that only matching items are displayed. Alternatively, the part number of the coolant pump can also be entered in the search field. In addition, it should be clarified in advance whether other spare parts are to be changed at the same time. In this case, our individually created product packages are a good choice. For the most part, these contain not only the cooling water pump but also the corresponding belt. Likewise, there are packages with the combination of water pump and thermostat. In some cases, the coolant temperature sensor or the specified amount of coolant is also included in the packages.

When buying water pumps, it is generally not necessary to get the original parts of the vehicle manufacturer. Instead, you can rely on brand manufacturers who offer the coolant pumps in comparable quality but at a much lower price. The following brand manufacturers, among others, we have for you in the range for coolant pumps:

In addition to the spare parts and the required amount of coolant, it is recommended to purchase a cooler cleaner when buying water pumps. This is added to the old coolant before draining and left to act for up to 30 min with the engine switched on and the heater running. This causes all dirt and debris to be removed from the cooling system. Thus, the life of the components is increased and the wear is delayed.
If you have any questions about buying or changing water pumps, please feel free to contact our customer service with the chassis number.