Radiator cap for automobile

Spare: Pressure cap original

Information - Radiator cap

Radiator cap: replacement and selection

When and why it is necessary to replace radiator cap

Operational lifetime of this component is not specified by manufacturers. Necessity of radiator cap replacement occurs in case of jamming of its one or both valves. Also, a new part is installed if the sealing element loses its elasticity.

The main cause of component breakdown is engine overheating due to defectiveness of cooling system elements. Jamming of the valves often happens at soiling with emulsion. It can appear due to usage and mixing of various cooling liquid types.

Antifreeze leakage is noticeable at defect of the radiator cap. This can be noticed by specific smell and traces of liquid under the car. In some cases lack of cooling liquid in the system can lead to engine overheating, which will be indicated by the dashboard temperature gauge.

The procedure of radiator cap replacement should be performed on the cooled engine only. The component can be replaced on your own only if all the safety precautions are observed. The case is that due to high temperature of cooling liquid in the system there is a risk of burn wound during performing repair works.

How to select radiator cap

There are components of two types: with a pressure relief valve and without it.

The parts with a pressure relief valve are able to dump excessive cooling system pressure. However, caps of the second type are usually cheaper.

Defect of the radiator cap can lead to breakdown of expensive car units. That is why you should give preference to parts of proven manufacturers. Durable and high-quality radiator caps can be found in the assortment of such well-known firms as Ashika, JapanParts, Nipparts, Blue print, AKS Dаsis, Triscan and others.

Consider diameter of the filler neck and valve during selection of the radiator cap. There should be working pressure value marked on the component. Pay attention that it is prohibited to install the parts, which have parameters, different from the one, noted in the car technical documentation. Otherwise there is high risk of defects appearance in the cooling system.

Radiator cap at low cost: Top Spares

Sealing Cap, radiator 45mm (HERTH+BUSS JAKOPARTS, J1545002) -27%
original Sealing Cap, radiator HERTH+BUSS JAKOPARTS J1545002 Article №: J1545002
HERTH+BUSS JAKOPARTS Sealing Cap, radiator J1545002
£ 7,49**
£ 5,47
incl. 20% VAT, excl. delivery costs
Over 100 items in stock
  • Diameter [mm] 45
  • Height [mm] 23
  • Pressure [bar] 0,9
  • Opening Temperature [°C] 88
  • Condition  New
Details
Breather Screw / -valve, radiator with seal ring (TOPRAN, 501 437) -27%
original Breather Screw / -valve, radiator TOPRAN 501 437 Article №: 501 437
TOPRAN Breather Screw / -valve, radiator 501 437
£ 1,99**
£ 1,45
incl. 20% VAT, excl. delivery costs
Over 100 items in stock
  • Supplementary Article/Info 2 with seal ring
  • Material Plastic
  • Thread Size M 10 x 1
  • Length [mm] 17,5
  • Condition  New
Details
Sealing Cap, radiator 45,5mm (JAPANPARTS, KH-C19) -27%
original Sealing Cap, radiator JAPANPARTS KH-C19 Article №: KH-C19
JAPANPARTS Sealing Cap, radiator KH-C19
£ 4,99**
£ 3,64
incl. 20% VAT, excl. delivery costs
Over 100 items in stock
  • Diameter [mm] 45,5
  • Height [mm] 25,5
  • Pressure [bar] 0,9
  • Condition  New
Details
Sealing Cap, radiator 43,5mm (ASHIKA, 33-0C-C30) -27%
original Sealing Cap, radiator ASHIKA 33-0C-C30 Article №: 33-0C-C30
ASHIKA Sealing Cap, radiator 33-0C-C30
£ 2,49**
£ 1,82
incl. 20% VAT, excl. delivery costs
Over 100 items in stock
  • Diameter [mm] 43,5
  • Height [mm] 21
  • Pressure [bar] 0,9
  • Condition  New
Details
Breather Screw / -valve, radiator Original VAICO Quality (VAICO, V20-7154) -27%
original Breather Screw / -valve, radiator VAICO V20-7154 Article №: V20-7154
VAICO Breather Screw / -valve, radiator V20-7154
£ 2,49**
£ 1,82
incl. 20% VAT, excl. delivery costs
Over 100 items in stock
  • Length [mm] 10
  • Material Plastic
  • Outer thread [mm] M 10 x 1
  • Weight [kg] 0,002
  • Supplementary Info Original VAICO Quality
  • Packaging width [cm] 1,65
  • Packaging height [cm] 1,75
  • Packaging Depth [cm] 1,65
  • Condition  New
Details
Sealing Cap, radiator for hot climate zones (TRICLO, 311332) -27%
original Sealing Cap, radiator TRICLO 311332 Article №: 311332
TRICLO Sealing Cap, radiator 311332
£ 10,99**
£ 8,02
incl. 20% VAT, excl. delivery costs
Over 100 items in stock
  • Required quantity 1
  • Shifting Points [bar] 1,4
  • Mounting Type Bayonet
  • Condition  New
Details
Sealing Cap, radiator MA Front for right-hand drive vehicles for vehicles without air conditioning not for hot climates Austria without pressure regulator Germany Diagnostic Probe Japan GLS Post-catalyst (CALORSTAT by Vernet, RC0027) -27%
original Sealing Cap, radiator CALORSTAT by Vernet RC0027 Article №: RC0027
CALORSTAT by Vernet Sealing Cap, radiator RC0027
£ 5,49**
£ 4,01
incl. 20% VAT, excl. delivery costs
Over 100 items in stock
  • Pressure [bar] 1,1
  • Condition  New
Details
Breather Screw / -valve, radiator (TRUCKTEC AUTOMOTIVE, 08.40.015) -27%
original Breather Screw / -valve, radiator TRUCKTEC AUTOMOTIVE 08.40.015 Article №: 08.40.015
TRUCKTEC AUTOMOTIVE Breather Screw / -valve, radiator 08.40.015
£ 2,49**
£ 1,82
incl. 20% VAT, excl. delivery costs
Over 100 items in stock
  • for OE number 17 11 1 712 788
  • Condition  New
Details
  • Best pricesSparepartstore24.co.uk guarantees high-quality car parts at very attractive prices.
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