Looking for the correct O2 sensor part number - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 05-23-2007, 09:47 AM   #1
Senior Member
Posts like a Supercharger
Thread Starter
 
Join Date: Jun 2006
Location: Moon of meepsorp
Posts: 183
Thanks: 0
Thanked 0 Times in 0 Posts
Roadrunner is on a distinguished road
Default Looking for the correct O2 sensor part number

For my 93 L67, AC delco and Rock Auto web sites give two part number options as follows:

ACDELCO Part # AFS20 {#25162693}
SENSOR,HTD OXY(POSN 1) OEM SENSOR; IN EXH MANIFOLD/CROSSOVER-TYPE #20

ACDELCO Part # AFS21 {#25166816}
SENSOR,OXY(POSN 1) OEM SENSOR; IN EXH MANIFOLD/CROSSOVER

Since the emissions sticker on my radiator says O2, I presumed it is not heated and therefore bought the AFS21.
When I took existing sensor off the car, I saw it was AFS20.

Both parts are single wire.

GMPD shows part # 25162693 (AFS20) however it does not differentiate between L27 and L67 - so Im not sure how accurate it is.
Anyone have any advice?

EDIT: Sticker says "O2S".
Is the existing one in the car the wrong part? Has anyone else with similar car used either of these Delco'*?
Roadrunner is offline   Reply With Quote
Old 05-23-2007, 02:09 PM   #2
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Non heated for the L67 that year. Single purple wire. L27 got heated (HO2S) you are not (O2S)

http://www.bonnevilleclub.com/forum/...e=article&k=16

Techinfo is your friend.
willwren is offline   Reply With Quote
Old 05-23-2007, 03:48 PM   #3
Senior Member
Posts like a Turbo
 
Join Date: Mar 2006
Location: Houston, Tx
Posts: 367
Thanks: 0
Thanked 0 Times in 0 Posts
BonnevillesSince62 is on a distinguished road
Default

Went through the same thing on my friend'* '93 Caprice, with the exact same part numbers!

I think they're truly interchangeable, but the one that came out was an AFS20 (skinny on the top by the wire), so that'* what we went with. It'* working fine in his application. Also, check here:

www.rmsautoparts.com

I know for a fact they have plenty of both in stock! They're good people, with good prices.
BonnevillesSince62 is offline   Reply With Quote
Old 05-23-2007, 03:49 PM   #4
Senior Member
Posts like a Turbo
 
Join Date: Mar 2006
Location: Houston, Tx
Posts: 367
Thanks: 0
Thanked 0 Times in 0 Posts
BonnevillesSince62 is on a distinguished road
Default

Quote:
Originally Posted by willwren
Non heated for the L67 that year. Single purple wire. L27 got heated (HO2S) you are not (O2S)

http://www.bonnevilleclub.com/forum/...e=article&k=16

Techinfo is your friend.
The ones he'* talking about are both non-heated. I think either can be used interchangeably.
BonnevillesSince62 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Need help with correct oxygen sensor part # 92BonneSE 1992-1999 1 03-19-2007 09:59 PM
Need Plug Wire Part Number and NGK Plug Part Number!! josho66 2000-2005 11 05-29-2005 01:06 PM
correct part number? harofreak00 Performance, Brainstorming & Tuning 7 04-21-2004 06:26 PM
Correct AC Delco Part Number for Oxygen Sensor for 94SE mikeblue94 1992-1999 7 03-16-2004 03:36 PM
Looking for Part number (Now with Pics) Rogue General GM Chat 13 02-10-2004 09:05 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:55 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.