I have a downpipe and the stock cc . The car had 45k miles on it but the air pump was making a heck of a lot of noise . Petit racing just disconnected the electrical connectio9n to the airpump and adjusted the idle and the car runs fine. Will this clog my cat or screw up my o2 sensor? It has never been replaced.

 

I ordered one from the web site. They had it listed by vehicle make and model but that "part #250-21026 is wrong". It has a 12" wire connector and the OEM has a 16" wire connector. It does say NTK on it though.

I called and they said they will send a replacement and didn't know about the website mistake untill after it was shipped.

The wrong part number one should fit perfectly for DP's other than HKS since the O2 sensor is mounted closer than stock.

 

As far as splicing the connectors I heard that you are not supposed to solder them together because then it does not read right. Is this true.

 

get the universal bosch ones they sell at auto zone, etc for 20 bux. works great

 

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The only thing that will change the "accuracy" (resistance) is if you use a different gauge wire to splice or increase/decrease the length of the wire dramatically. Try to use the same gauge, never smaller. Solder has no effect, it just makes the connection more permanent so that it will never work free on it's own if the crimp fails. Don't overtighten it, just seat it gently and forget about it for 25,000 miles or so..........they last a long time.
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Above quote from RonKMiller on a similar thread.


My bro-in-law (20+yr Honda Tech) told me not to solder them but I have no proof either way so I purchased it with the wire.

 

Do they come with the wire and connector?

 

It does not include the wire and connector. You must use the original one, however attaching the OEM plug/wire is very simple and takes minimal modifications and effort. No solder gun is required. The Bosch O2 sensor has a metel clip at the end, where you insert part of the oem wire and crimp them together. The kit also inlcudes a heat shrink wrap which wrapps around the the exposed clip/wire and protects it from water and other elements.

 

Chuck,

This is a great deal, and am ready to pull the buy trigger.

One question. Will the Walker oxygen sensor give my Apex Power FC the data it needs to make accurate AFR readings? I know you have the Apex PFC also, so...

Is there any other oxygen sensor I should go with besides the stock one?

Thanks for this link! I plan to order one Monday, if the Walker unit works as well as the stock oxygen sensor unit...

 

my o2 sensor has 200+K miles on it.......... time for a replacement?

 

I got a Bosch one from www.kragen.com for $17 bucks...... works fine and another friend got the same one......

 

Direct plug-in, or soldering required?

 

wire crimpers

 

just ordered one!

 

Walker or Bosch?

 

I checked out Kragen's website just to see the prices $18 - $200
Click "here" and you figure it out.

Anyhow, I was curious cause a g/f of mine works for Schucks in WA and she says she delivers to the dealers all the time and she can't wear a badge or shirt with Schucks on it because they don't want the customers to know where they buy the parts "lol".

 

actually, if you look at the picture they provide, the part number is 250-2120 but when you buy it on their site it adds it as 250-21020

 

Got mine in the mail. It looks slightly different $35.99 was a steal. It came in 3 days.

 

 

hmmmm, i might have to pick one of them up.....oxygen sensor is going on 10 years next year.

 

Damn that walker unit looks shorter on the tops side (anyone have a measurement?) My bung was welded inboard a little too far and the top of the o2 sensor hit the turbo housing, that one looks like it would clear, I only need a 1/4 - 1/2 inch.

 

it seems shorter but it is deceptive because the bolt part is in a different spot, here is a photoshop-hacked image to compare, they are about the same zoom ratio so it is relatively accurate in comparing the length difference (relative , not absolute)

 

Same here. I'm gonna have to halfway take off the downpipe in order to get my new o2 sensor in.

 

In the diagram it states Ford 90-92. Does this mean there is a $35 Ford OEM O2 sensor that is the same as our $212 Mazda O2 sensor? Has anyone checked out Ford Probe O2 sensors from 90-92? I like the price of the Walker unit, but if you can get the same OEM sensor for under $50 that would be excellent.

eric

 

>>In the diagram it states Ford 90-92. Does this mean there is a $35 Ford OEM O2 sensor that is the same as our $212 Mazda O2 sensor?

i dont think so hapa, all it means is that it can 'replace' the ford sensor.

 

Hmmm, well I received mine today:
- doesn't say NTK on it
- doesn't say Walker on it
- doesn't look like the pix that damian posted
- does have a 20" wire
- does have "JAPAN 5340 11C" stamped into it

I'll try it out this week...