BMW Luxury Touring Community banner

Replacing Radiator Cap

4767 Views 6 Replies 4 Participants Last post by  Cochinosucio
Gentlemen, I am doing my 12k service and am wanting to replace the radiator cap. I have searched the forums regarding the cap and wanted to ask if you thought a 1.4 rated cap would be "close enough for government work". The OEM cap is 1.5.

Has anyone ran into problems using a non-BMW issued radiator cap?

1 - 1 of 7 Posts
Hmm, you shouldn't have any trouble sourcing the correct bar cap... it is known as a European or Mini-Cap. Mine is a Stant brand that I bought for around 10 bucks.

The conversion is 21.7 psi.

But I don't think you would have any issues with the 1.4. If it runs hotter than before you'll need to up the pressure. Installing one that is too high could potentially cause serious problems.

You can easily have the old cap tested, a lot of times they will have just a very minor leak from an age hardened seal that is hard to detect, so replacing it is a good first start.
1 - 1 of 7 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.