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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 12-09-2016, 05:50 AM
Jett3ch Jett3ch is offline
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OEM sensors vs. Generic (Chinese)

Just a curious question I wanted to throw out there to see what y'all think. Is there really a difference between OEM sensors and eBay chinese sensors such as crank or cam for example? I've seen some debate on this where some discuss that some OEM parts are actually made in China just like the cheap eBay stuff, except they upscale the Chinese ones to make a killing. Whats everyone's opinion, has anyone had issues with cheap sensors?

Outer space.
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  #2  
Old 12-09-2016, 06:45 AM
Nyc Dito Nyc Dito is offline
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Quote:
Originally Posted by Jett3ch View Post
Just a curious question I wanted to throw out there to see what y'all think. Is there really a difference between OEM sensors and eBay chinese sensors such as crank or cam for example? I've seen some debate on this where some discuss that some OEM parts are actually made in China just like the cheap eBay stuff, except they upscale the Chinese ones to make a killing. Whats everyone's opinion, has anyone had issues with cheap sensors?

Outer space.
There's a difference from an OE supplier building parts in China over a unknown Chinese company building parts in China for BMW's. It's all about quality control.
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  #3  
Old 12-09-2016, 07:42 AM
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Fudman Fudman is offline
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I believe the manufacturer makes a significant difference WRT all replacement parts. I believe the OEM O2 supplier is Bosch. I replaced my pre-cat O2 sensors at 105K with Bosch. 20K later, one failed (threw code). I have my originals back in and all is good. This is the second time (first was with a Honda) I have had issues with Bosch O2 sensors purchased in the aftermarket from legit sources. Bottom line, the quality of the part matters regarding issues like reliability.
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  #4  
Old 12-09-2016, 08:27 AM
JKRIT JKRIT is online now
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Quote:
Originally Posted by Nyc Dito View Post
There's a difference from an OE supplier building parts in China over a unknown Chinese company building parts in China for BMW's. It's all about quality control.
But more specifically, it's about the quality specifications of the company that is going to put its name on the part, like an OE supplier or a car company. They all have different requirements, like "no more than 2 rejects per 100" vs. "no more than 7 rejects per 100." With an E-bay part from an unknown company name, you really raise your risk of getting a bad part. If you source from the car company or at least a brand that is well-recognized and respected, based on a history, then at least you have a better chance of getting a good part. Even if they all come from the same factory.
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Last edited by JKRIT; 12-09-2016 at 08:30 AM.
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  #5  
Old 12-09-2016, 08:29 AM
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mjalloul11 mjalloul11 is offline
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I had the rear ABS wheel sensor replaced with a chines one, couldnot find an OEM part, but for 20$ i tried it. One year later and all is good. Not all china made parts are equal !
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  #6  
Old 12-09-2016, 09:11 AM
Nyc Dito Nyc Dito is offline
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Quote:
Originally Posted by JKRIT View Post
But more specifically, it's about the quality specifications of the company that is going to put its name on the part, like an OE supplier or a car company. They all have different requirements, like "no more than 2 rejects per 100" vs. "no more than 7 rejects per 100." With an E-bay part from an unknown company name, you really raise your risk of getting a bad part. If you source from the car company or at least a brand that is well-recognized and respected, based on a history, then at least you have a better chance of getting a good part. Even if they all come from the same factory.
Totally agree with you. BEHR is perfect example. For the E53 X5 the aux fan's they were making some years ago were catching fire. TYC (cheaper company) had no issues but was not recognized as a OE supplier. So people waited for BEHR to fix their issue or just went OEM.
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  #7  
Old 12-09-2016, 09:13 AM
Nyc Dito Nyc Dito is offline
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Quote:
Originally Posted by mjalloul11 View Post
I had the rear ABS wheel sensor replaced with a chines one, couldnot find an OEM part, but for 20$ i tried it. One year later and all is good. Not all china made parts are equal !
I sell both Chinese after market and OEM and honestly sometimes its hit or miss. We monitor all sales for comebacks and once something starts coming back more often, we block the sales for that item. Even with the OE/OES.
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  #8  
Old 12-09-2016, 09:52 AM
MKJS MKJS is offline
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Have always heard here, when it comes to sensors, always oem.

I have had some experience with Chinese knives. Bought a ruff use knife from cheaper than dirt for $10. In tests to destruction it proved to be stronger than a $300 custom survival knife favored by some special forces people. Just because it's made in china does not mean it's junk. Just because it's made in Deutchland does not make it good.

Best I can figure is read and ask here what has worked and what has failed. The e39 has been around quite a while now and many here have tried about every brand of part out there and know a great deal about what is currently a good product.

Jim
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  #9  
Old 12-09-2016, 10:40 AM
Jett3ch Jett3ch is offline
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Thanks everyone. I'm asking because I believe my cranksensor is bad, my car through a code for this so hopefully it is just that. Duralast brand at autozone wants $45 dollars for crank sensor so I'm thinking of taking the shot vs. EBay $10 or Oem$130 let's see..... I also have 2 eBay wheel speed sensors and they still work. I guess I've just been lucky so far..

Outer space.
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  #10  
Old 12-09-2016, 11:03 AM
Nyc Dito Nyc Dito is offline
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Originally Posted by Jett3ch View Post
Thanks everyone. I'm asking because I believe my cranksensor is bad, my car through a code for this so hopefully it is just that. Duralast brand at autozone wants $45 dollars for crank sensor so I'm thinking of taking the shot vs. EBay $10 or Oem$130 let's see..... I also have 2 eBay wheel speed sensors and they still work. I guess I've just been lucky so far..

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Where are you located?
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  #11  
Old 12-09-2016, 11:05 AM
Sroor9001 Sroor9001 is offline
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No problem with China sensors except oxygen sensors and map sensors brand new and already shot
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  #12  
Old 12-09-2016, 11:54 AM
NNJE39 NNJE39 is offline
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Been 3 years on my chinese wheel speed sensors. Zero issues.
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  #13  
Old 12-09-2016, 12:53 PM
Jett3ch Jett3ch is offline
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Originally Posted by Nyc Dito View Post
Where are you located?
Florida

Outer space.
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  #14  
Old 12-09-2016, 01:28 PM
540nj 540nj is offline
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Quote:
Originally Posted by Nyc Dito View Post
I sell both Chinese after market and OEM and honestly sometimes its hit or miss. We monitor all sales for comebacks and once something starts coming back more often, we block the sales for that item. Even with the OE/OES.

Last week I replaced my original PS pump with autozone Chinese $110 replacement. Cured low speed steering, but whined like a (insert fav non-PC adjective) housewife. I replaced with German LUK from FCP, all is good for first 50 miles.

Dave
03 540i6
95 993
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  #15  
Old 12-09-2016, 04:48 PM
Jett3ch Jett3ch is offline
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OK guys figured I'd update, I changed the sensor, reset codes, car is back to normal. I installed the Duralast brand from autozone using a 5mm Allen. Let's see how it holds up, had to swap over the oring. I compared both of the sensors and both seem very similar in construction, size and shape.

Outer space.
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  #16  
Old 12-11-2016, 09:27 AM
JaxPlanet JaxPlanet is offline
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I always select OE parts for critical, long, and/or difficult jobs because you don't want to do them again or suffer the consequences, like Sachs fan clutch and Genuine fan. Except in cases where aftermarket parts work better, like FKM VANOS o-rings. I try OEM parts for non-critical, easy jobs, like a window regulator or gas cap.
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  #17  
Old 12-11-2016, 09:25 PM
Sroor9001 Sroor9001 is offline
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Quote:
Originally Posted by 540nj View Post
Last week I replaced my original PS pump with autozone Chinese $110 replacement. Cured low speed steering, but whined like a (insert fav non-PC adjective) housewife. I replaced with German LUK from FCP, all is good for first 50 miles.

Dave
03 540i6
95 993
No no no
Big mistake
Power steering pump get new or used oem with warrenty
No China otherwise
You get whining noise and leakage within few months if it not days
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  #18  
Old 12-12-2016, 01:09 AM
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Burning2nd Burning2nd is offline
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This is such a bad conversation.. I could beat you to death with the parts that you guys have thrown at cars over the years of my stay here

I stopped caring about what you guys put in your cars...

There is oil brand conversation, there's part manufacture brand conversation, there's suspension brand parts argument

@ this point i just watch you guys throw your money away.. out of sight out of mind,

FOr the record the 18$ amazon cam sensor in the 328is is doing great for about the 2nd year now.. and the 20 someing dollar one in the 540 is also doing great
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