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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 10-03-2012, 07:29 PM
Mikes530 Mikes530 is offline
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Walker O2 sensors??

Ordered a pair of pre-cat O2 sensors, the description said "OE equipment". Turned out to be Walker, never heard of them. Could someone who has experience with Walker please comment.
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  #2  
Old 10-03-2012, 07:55 PM
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Fudman Fudman is offline
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Mein Auto: '02 530i Sport auto
I have never used Walker but I had a bad experience using non-OEM (Bosch) O2 sensors in my Civic. I went back to OEM (Denso) and my CEL went away. I stayed with Bosch O2 sensors in my e39 and have seen improvements in gas mileage and drive ability.
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Old 10-04-2012, 06:38 AM
poolman poolman is offline
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Mein Auto: 525i station wagon
I have recently installed Denso sensors on my ride--my mileage is better and the power is good--just thought I would try something other than Bosch--Denso , fro what I have read, reacts faster than Bosch
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Old 10-04-2012, 08:43 AM
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tmvE39/E53/Z32 tmvE39/E53/Z32 is offline
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Denso is well-known and provent good products. Bosch is great too. Never heard of Walker. I'd return them and go with either Bosch or Denso.
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2000 Dinan S1 //M5 (my DD), 06 DINAN E53 4.8iS (wife's DD), 90 Straman Z32TT (my pride & joy ride)
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Old 10-04-2012, 01:22 PM
Mikes530 Mikes530 is offline
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Just took a closer look at the Walker sensors, the box says "made in the USA from US and foreign components", the sensors have "Japan" stamped on them. Could they be based on Denso?

No reference to China. I'm getting a better feeling about these things, hope I'm not wrong.
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  #6  
Old 10-04-2012, 01:26 PM
edjack edjack is offline
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The Walker name has long been associated with quality OEM and aftermarket exhaust system components. No telling about these. Return them and get Bosch.
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Old 10-04-2012, 02:21 PM
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Location: Thousand Oaks CA
 
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Mein Auto: 1997 528i
I've used Walker on my 528 for years, no issues.
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