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Brake caliper bleed nipples

Posted: Wed Jan 25, 2012 9:41 pm
by bigbird76
Hello guys

I have tried to find out the size of the bleed nipples for my m3 brake calipers front and rear as they are having a full refurb but i have only come across 1/8 inch NPT which is in xworks's rebuild thread.

Does anyone know if this is the correct terminology and where i can get these online other than bmw, I Have tried ebay and google but i am not getting any luck finding them are they known as another name/type? Surely it is a common type nipple on all E30's?

Cheers for any replies

Leigh

Re: Brake caliper bleed nipples

Posted: Wed Jan 25, 2012 9:46 pm
by kam-325i
1/8 inch NPT refers to the thread of the nipple.

Re: Brake caliper bleed nipples

Posted: Wed Jan 25, 2012 10:32 pm
by bigbird76
Yes 1/8 National pipe thread but i cannot seem to find any for sale

Leigh

Re: Brake caliper bleed nipples

Posted: Wed Jan 25, 2012 10:39 pm
by Jos

Re: Brake caliper bleed nipples

Posted: Wed Jan 25, 2012 10:40 pm
by E30BeemerLad
Part number 5 here - 34111153197
that part number should get you a pair

Image

http://realoem.com/bmw/showparts.do?mod ... g=34&fg=05

Re: Brake caliper bleed nipples

Posted: Wed Jan 25, 2012 11:46 pm
by BadDave
bigbird76 wrote:Yes 1/8 National pipe thread but i cannot seem to find any for sale

Leigh
Have you tried your local garages or motor factors??

That's normally my 1st port of call.

Re: Brake caliper bleed nipples

Posted: Fri Jan 27, 2012 10:55 pm
by bigbird76
Guys i got in touch with xworks on this forum.

Turns out that the bleed nipples are M7 x 1.0 which is a common type nipple.

Thought i would update this here incase anyone else is going to do any brake work on thier cars.

Cheers for the help all

Leigh

Re: Brake caliper bleed nipples

Posted: Sat Jan 28, 2012 11:18 am
by e301988325i
NPT is a taper thread, for the brake line fittings.

I've had trouble with bleed nipples in the past, WD40 before hand and let soak as long as possible. Be sure to use a ring spanner and to take care with the spanner, they are annoyingly easy to break!!

Posted: Sat Jan 28, 2012 11:33 am
by johnl320
I always remove the nipple completely and refit it with a tiny bit of copperslip on the thread to help prevent seizure later on.