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 COSWORTH (TOPRAN, 202 261) -27%
original Sealing Cap, coolant tank TOPRAN 202 261 Article №: 202 261
TOPRAN Sealing Cap, coolant tank 202 261
£ 2,49**
£ 1,82
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 1,4bar (FEBI BILSTEIN, 36579) -27%
original Sealing Cap, coolant tank FEBI BILSTEIN 36579 Article №: 36579
FEBI BILSTEIN Sealing Cap, coolant tank 36579
£ 6,99**
£ 5,10
incl. 20% VAT, Shipping
Over 100 items in stock
  • Diameter [mm] 65,0
  • Inner thread [mm] M52 x 3
  • Colour Black
  • Material Plastic
  • Opening Pressure [bar] 1,4
  • Weight [kg] 0,045
  • Condition  New
Details
Sealing Cap, coolant tank ADP (FEBI BILSTEIN, 14700) -27%
original Sealing Cap, coolant tank FEBI BILSTEIN 14700 Article №: 14700
FEBI BILSTEIN Sealing Cap, coolant tank 14700
£ 7,49**
£ 5,47
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
Sealing Cap, coolant tank BEHR HELLA SERVICE *** PREMIUM LINE ***, 66mm, 2,0bar (HELLA, 8MY 376 743-451) -27%
original Sealing Cap, coolant tank HELLA 8MY 376 743-451 Article №: 8MY 376 743-451
HELLA Sealing Cap, coolant tank 8MY 376 743-451
£ 15,49**
£ 11,31
incl. 20% VAT, Shipping
Over 100 items in stock
  • Diameter 1 [mm] 66
  • Diameter 2 [mm] 30
  • Opening Pressure [bar] 2,0
  • Version produced by BEHR
  • Supplementary Info BEHR HELLA SERVICE *** PREMIUM LINE ***
  • Condition  New
Details
Sealing Cap, coolant tank 2,0bar (TOPRAN, 500 343) -27%
original Sealing Cap, coolant tank TOPRAN 500 343 Article №: 500 343
TOPRAN Sealing Cap, coolant tank 500 343
£ 5,49**
£ 4,01
incl. 20% VAT, Shipping
Over 100 items in stock
  • Opening Pressure [bar] 2,0
  • Colour Black
  • Material Plastic
  • Mounting Type Screw Connection
  • Condition  New
Details
Sealing Cap, coolant tank 1,4bar (FEBI BILSTEIN, 02111) -27%
original Sealing Cap, coolant tank FEBI BILSTEIN 02111 Article №: 02111
FEBI BILSTEIN Sealing Cap, coolant tank 02111
£ 5,99**
£ 4,37
incl. 20% VAT, Shipping
Over 100 items in stock
  • Colour Blue
  • Material Plastic
  • Opening Pressure [bar] 1,4
  • Weight [kg] 0,057
  • Condition  New
Details
Sealing Cap, coolant tank Original VAICO Quality (VAICO, V42-0255) -27%
original Sealing Cap, coolant tank VAICO V42-0255 Article №: V42-0255
VAICO Sealing Cap, coolant tank V42-0255
£ 5,99**
£ 4,37
incl. 20% VAT, Shipping
Over 100 items in stock
  • Weight [kg] 0,066
  • Pressure [bar] 1,4
  • 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 0,9bar (BLUE PRINT, ADC49902) -27%
original Sealing Cap, coolant tank BLUE PRINT ADC49902 Article №: ADC49902
BLUE PRINT Sealing Cap, coolant tank ADC49902
£ 6,99**
£ 5,10
incl. 20% VAT, Shipping
Over 100 items in stock
  • Opening Pressure [bar] 0,9
  • Weight [kg] 0,050
  • Condition  New
Details
  • Best pricesSparepartstore24.co.uk guarantees high-quality car parts at very attractive prices.
  • Save on shippingFree shipping on orders over £ 150 within the UK
  • Fast deliveryYou will receive your autoparts order within several working days
PayPal replacement Coolant reservoir cap
VISA Expansion tank cap replacement
Master Card Expansion tank cap
American Express
Bank Transfer

*Applies to selected products. This percentage may be omitted, increased or decreased after the time indicated in the upper right-hand corner. It does not refer to a price that was actually charged previously, see **

**The amount crossed out is not a price that was actually charged previously, but is calculated in real time on the basis of our lowest current purchase price. It may therefore increase or decrease on a daily basis.