Expansion tank cap for automobile

Spare: Coolant reservoir cap original

Information - Expansion tank cap

Cooling fluid reservoir cap: replacement and selection

When and why it is necessary to replace cooling fluid reservoir cap

Manufacturers do not specify exact operational lifetime for the cooling fluid reservoir cap. Replacement of the part is performed at appearance of cracks on it or at breakage. Moreover, a new cap is installed at valve jamming.

Mechanical damages of the component appear as a result of a road accident. The cause of valve jamming lies in its clogging. Particularly, this is possible, at appearance of emulsion in cooling fluid due to ingress of oil.

Presence of cap defect is indicated by leakage of working fluid from the reservoir, which is noticeable because of specific smell in the passenger compartment. Also leakages under the radiator or smoke from under the bonnet can appear.

During replacement of the cooling fluid reservoir cap you need to take into account, that it can be opened only at turned off and cooled engine.

Cooling fluid circulates under the pressure and have high temperature, that is why there is a risk to sustain a burn wound if safety precautions are not observed. It is worth remembering that untimely replacement of the part can lead to improper functioning of the cooling system, which is fraught with engine breakdown.

How to select cooling fluid reservoir cap

The items differ from one another by construction. Thus, there are caps with two valves: safety (releases high pressure) and vacuum (normalizes low pressure). Also there are parts with one valve, which performs both functions noted above.

High-quality expansion tank caps are presented in the assortment of many brands. The most famous are Metzger, AKS DASIS, Swag, Gates, Topran, Vaico.

The items diverge from one another by shape, valve diameter, height and thread size. Moreover, maximum allowed pressure is noted for the components and it depends on the type of the radiator installed.

Expansion tank cap at low cost: Top Spares

Sealing Cap, coolant tank Original VAICO Quality (VAICO, V42-0255) -22%
Sealing Cap, coolant tank | VAICO V42-0255 Article №: V42-0255
VAICO Sealing Cap, coolant tank V42-0255
£ 5,99
£ 4,67
incl. 20% VAT, Shipping
Over 100 items in stock
  • Pressure [bar] 1,4
  • Weight [kg] 0,066
  • Packaging width [cm] 4,3
  • Packaging height [cm] 7,3
  • Supplementary Info Original VAICO Quality
  • Packaging Depth [cm] 7,2
  • Condition  New
Details
Sealing Cap, coolant tank (FEBI BILSTEIN, 12205) -22%
Sealing Cap, coolant tank | FEBI BILSTEIN 12205 Article №: 12205
FEBI BILSTEIN Sealing Cap, coolant tank 12205
£ 6,49
£ 5,06
incl. 20% VAT, Shipping
Over 100 items in stock
  • Opening Pressure [bar] 1,4
  • Weight [kg] 0,057
  • Condition  New
Details
Sealing Cap, coolant tank AAH for vehicles without air conditioning (FEBI BILSTEIN, 02269) -22%
Sealing Cap, coolant tank | FEBI BILSTEIN 02269 Article №: 02269
FEBI BILSTEIN Sealing Cap, coolant tank 02269
£ 2,99
£ 2,33
incl. 20% VAT, Shipping
Over 100 items in stock
  • Colour Blue
  • Material Plastic
  • Opening Pressure [bar] 1,2
  • Weight [kg] 0,036
  • Condition  New
Details
Sealing Cap, coolant tank COSWORTH (TOPRAN, 202 261) -22%
Sealing Cap, coolant tank | TOPRAN 202 261 Article №: 202 261
TOPRAN Sealing Cap, coolant tank 202 261
£ 1,99
£ 1,55
incl. 20% VAT, Shipping
Over 100 items in stock
  • Material Plastic
  • Mounting Type Screw Connection
  • Thread Type Inner Thread
  • Colour Yellow
  • Condition  New
Details
Sealing Cap, coolant tank (TOPRAN, 304 951) -22%
Sealing Cap, coolant tank | TOPRAN 304 951 Article №: 304 951
TOPRAN Sealing Cap, coolant tank 304 951
£ 4,49
£ 3,50
incl. 20% VAT, Shipping
Over 100 items in stock
  • Material Plastic
  • Mounting Type Screw Connection
  • Colour Black
  • Opening pressure [psi] 21
  • Condition  New
Details
Sealing Cap, coolant tank Original VAICO Quality (VAICO, V10-0490) -22%
Sealing Cap, coolant tank | VAICO V10-0490 Article №: V10-0490
VAICO Sealing Cap, coolant tank V10-0490
£ 4,99
£ 3,89
incl. 20% VAT, Shipping
Over 100 items in stock
  • Colour Blue
  • Pressure [bar] 1,4
  • Material Plastic
  • Weight [kg] 0,1116
  • Packaging width [cm] 11,2
  • Packaging height [cm] 12,6
  • Supplementary Info Original VAICO Quality
  • Packaging Depth [cm] 8,1
  • Condition  New
Details
Sealing Cap, coolant tank Manual Transmission for vehicles without air conditioning (TOPRAN, 720 173) -22%
Sealing Cap, coolant tank | TOPRAN 720 173 Article №: 720 173
TOPRAN Sealing Cap, coolant tank 720 173
£ 4,49
£ 3,50
incl. 20% VAT, Shipping
Over 100 items in stock
  • Opening Pressure [bar] 1,4
  • Diameter [mm] 60
  • Material Plastic
  • Colour Black
  • Mounting Type Screw Connection
  • Thread Type Inner Thread
  • Condition  New
Details
Sealing Cap, coolant tank ADP (FEBI BILSTEIN, 14700) -22%
Sealing Cap, coolant tank | FEBI BILSTEIN 14700 Article №: 14700
FEBI BILSTEIN Sealing Cap, coolant tank 14700
£ 6,99
£ 5,45
incl. 20% VAT, Shipping
Over 100 items in stock
  • Switch point from [bar] 1,4
  • Switch point to [bar] 1,6
  • Outer thread [mm] M63 x 3
  • Colour Blue
  • Material Plastic
  • Weight [kg] 0,16
  • Condition  New
Details
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