O2 sensor part number help
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Drifting
Joined: Mar 2016
Posts: 37
Likes: 6
From: Rapid City, South Dakota
O2 sensor part number help
Good Morning!!
Going to replace all 4 O2 sensors on my old (North American) 2006 LR3 (4.4). Very sure they are OEM. WAY past due. I have Denso part number confusion. I am old and my brain hurts sometimes
.
Can anyone simplify this? In other words "these for the right and these for the left". Over thinking this as usual. Thanks very much in advance!!
Jim
Jim
Going to replace all 4 O2 sensors on my old (North American) 2006 LR3 (4.4). Very sure they are OEM. WAY past due. I have Denso part number confusion. I am old and my brain hurts sometimes
.Can anyone simplify this? In other words "these for the right and these for the left". Over thinking this as usual. Thanks very much in advance!!
Jim
Jim
Last edited by Wrench; Nov 14, 2022 at 10:13 AM.
Baja
Joined: Nov 2017
Posts: 5,020
Likes: 969
From: Green Bay, WI
There is no right left, just up stream and down stream. I think Denso is the only one with left right because they make the harness a special length for both. You can replace all four if you wish, but only the upstream are critical. Downstream basically monitors the cats to make sure they are working.
DENSO 234-9075 upstream left or right
DENSO 234-4265 downstream right
DENSO 234-4266 downstream left
If you look at other brands, you will notice they say "left or right". Walker is a good alternative to Denso since many Walker sensors are just rebooted Denso sensors. In theory Delphi should be good too since they are an OEM provider. I avoid BOSCH like the plague though, which is strange I suppose but even the BMW guys hate BOSCH stuff.
DENSO 234-9075 upstream left or right
DENSO 234-4265 downstream right
DENSO 234-4266 downstream left
If you look at other brands, you will notice they say "left or right". Walker is a good alternative to Denso since many Walker sensors are just rebooted Denso sensors. In theory Delphi should be good too since they are an OEM provider. I avoid BOSCH like the plague though, which is strange I suppose but even the BMW guys hate BOSCH stuff.
Thread Starter
|
Drifting
Joined: Mar 2016
Posts: 37
Likes: 6
From: Rapid City, South Dakota
There is no right left, just up stream and down stream. I think Denso is the only one with left right because they make the harness a special length for both. You can replace all four if you wish, but only the upstream are critical. Downstream basically monitors the cats to make sure they are working.
DENSO 234-9075 upstream left or right
DENSO 234-4265 downstream right
DENSO 234-4266 downstream left
If you look at other brands, you will notice they say "left or right". Walker is a good alternative to Denso since many Walker sensors are just rebooted Denso sensors. In theory Delphi should be good too since they are an OEM provider. I avoid BOSCH like the plague though, which is strange I suppose but even the BMW guys hate BOSCH stuff.
DENSO 234-9075 upstream left or right
DENSO 234-4265 downstream right
DENSO 234-4266 downstream left
If you look at other brands, you will notice they say "left or right". Walker is a good alternative to Denso since many Walker sensors are just rebooted Denso sensors. In theory Delphi should be good too since they are an OEM provider. I avoid BOSCH like the plague though, which is strange I suppose but even the BMW guys hate BOSCH stuff.
Thanks VERY much. Exactly what I needed!!
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