Hello all, For my 2001 325 CI, I noticed a low coolant indicator light, opened the coolant cap and there was an O-ring that seemed to have been dropped in the tank. Not sure if it came from the bottom of the tank or the cap that covers it. I assumed the latter and took it out and secured it...

HELLO!!!! I am in the process of bringing an 01 540i M-Tech back to life and need some assistance. I am looking for the size of the o-rings that sit in the coolant manifold and water pump. There are two different pipes, hence two different sized o-rings used. Does any one know the sizes...

Hello I recently replaced a TPS Throttle Position Sensor beside the oil pump on my E46 S54 M3. As I removed the sensor there is a aluminum ring behind the sensor which came free, and an -ring behind that which broke in two.. When I ordered a new TPS, there is an O-Ring which sits flush...

Greetings, I've used these forums for years, found them extremely helpful, think I have something to give back. The Problem I've driven e39's for 10+ years and my current 2001 530i (5spd manual, sport) was presenting a real head scratcher. When running low rpm's in 2nd gear it would seemingly...

We have lots of threads on the VANOS seals and yet, no threads specifically for what is supposed to be deteriorating most, which is the pre-and pos-mortem measurements of the round and square cross-sectional o-rings. Cross sectional size & shape (e.g., flattened edges) Outside diameter...

Got the O-Ring but didn't need it. Looking to get what I paid for it. Listed on eBay, but will sell "offline." $3.99 with free shipping. http://www.ebay.com/itm/151144847634 Manufacturer Part Number...

What are the dimensions & material of the power steering fluid reservoir cap o-ring? As per a side discussion in this thread today: - > E39 (1997 - 2003) > Power steering Fluid If anyone has the actual MATERIAL & DIMENSIONS of the power-steering cap o-ring, please post it here so...

I was quite surprised because my car had 123k, and the DISA was in much better shape than I expected. After reading some horror stories about how DISA destroyed engines, I pulled out my DISA and checked its health. Found almost no free play, except just a little bit on the steel pin end. The...

Complete list of all o-rings (by size & by part number) to buy when ordering parts I was ordering oil filters today when I realized I should have a ready-made list of o-rings by part number to get while I'm already ordering other stuff (not just for oil changes but for all maintenance jobs)...

I attempted to replace the fuel injectors on my 1992 325i (first time doing fuel injectors). After installing them, I had significant difficulty trying to get them all seated properly. This took me 2 evenings of trial and error to sort out. After starting the car and running it, I noticed a...

Recently, oil has been seeping out from under the oil filter cover. I went to a BMW-specialist and they suggested I put on a gasket first (I luv going to this shop, free advice and no attempts at trying to get me in for a larger project other than what is actually needed!) Anyway, I opened the...

OK i recently installed a used pump from another e46. it was a pretty straightforward job, thanks to bimmerfest saved me a 100! i got a significant boost to my fuel economy and more accurite fuel qty readings. but recently i smelled little gasoline in the interior, and notice staining on my...

My girlfriend has a 2001 325i. I am a certified experienced automotive technician. The car is getting up there in mileage and has developed a couple of issues. My main concern is the cooling system. The water pump has been replaced previously and I just replaced the radiator with a larger...