Reviews of OEM BMW expansion tank cap

PR Score ?

To calculate the score

missing 8 reviews

6 votes

Average rating ?

4.5

Pressure release:

4.5

Seal:

5.0

2 reviews

Description

OEM BMW

Germany

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OEM BMW › Expansion tank cap

Thomasanderson23 14 Mar 2025, 16:29

Rating 5.0

Seal:

Genuine BMW is best, luckily the genuine caps are affordable

Pros: best, affordable

Vehicle: BMW

OEM BMW › Expansion tank cap

Electrical_Clock1446 13 Aug 2024, 00:22

Rating 4.0

Pressure release:

Oem 2.0 bar expansion tank cap is a liability to the cooling system usually resulting in catastrophic failures. I'm using the now recommended 1.4 bar cap, less chance of ruptured hoses & tanks. Bmw now recommends the 1.4 bar! And better peace of mind

Pros: less chance of ruptures, better peace of mind

Cons: liability, catastrophic failures

Vehicle: BMW

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What we know about OEM BMW expansion tank cap

The brand is registered in Germany.

In March 2026, PartReview does not yet have a formed opinion of OEM BMW expansion tank cap. You can help by adding a review for OEM BMW expansion tank cap.

Currently there are 2 reviews and 6 votes. Average rating — 4.5 out of 5. Vote balance: 6 up, 0 down.

Users also evaluated the qualities of OEM BMW expansion tank cap:

Seal - no coolant smell or wetness around the tank cap - rated positively. 5 points out of 5.
Pressure release - short hiss after shutdown is normal and brief - rated positively. 4.5 points out of 5.
Temperature stability - gauge stays steady in traffic when the cap holds pressure - no rating yet

Expansion tank cap OEM BMW in car-specific ratings

Unfortunately, there are no car-specific ratings for this part yet. You can help by adding a review and specifying your car.