An ACDelco GM Original Equipment Oxygen (O2) Sensor is a GM-recommended replacement for your vehicle’s original component, and is a special feedback sensor on your vehicle’s exhaust system. This sensor measures the proportion of oxygen in the exhaust gases. Using this measurement, the engine management computer can adjust the air/fuel ratio near the optimum value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. This original equipment oxygen sensor has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Detect oxygen content in the exhaust gases to optimize emissions and fuel economy
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function
Price: $46.78
(as of Feb 02, 2025 18:58:46 UTC – Details)
Customer Reviews
Reviewer: Ursula Thompson
Rating: 5.0 out of 5 stars
Title: O2 Sensor upgrade
Review: I purchased this O2 sensor because I performed some upgrades to my exhaust system, Shorty headers, JBA Y pipe and a hi flow Cat. I had a slight surge going on before I installed this package and now there is no surging. The recommendation came off of a OBS forum I’m a member of and, this upgrade worked wonderfully. Much better driving truck now.
Reviewer: Dan H.
Rating: 5.0 out of 5 stars
Title: Its been a positive plus for me…
Review: The O2 sensor came with thread grease & fit right into place. I purchased the 3 lead adapter cable (also sold on Amazon) to complete the install. I have a 1990 GMC K2500 4×4 350 (slightly board) with a 4 bolt main. It has stock TBI w/3″ exhaust all the way out from the stock headers. Transmission is the early Allison 3 speed w/4×4 High. Like everyone else with these old beasts, MPG pretty much vacuums.I’ve done some swapping of top end components, and some other swaps of old for new (radiator, coil, etc. etc.) and have followed the instruction of adjusting the EGR/Vacuum unit. In my case, my engine runs cooler (likely because of the new radiator and the 3″ exhaust).After install, (battery disconnected during so to reset the ECM)… I took the truck on a long 1 hour run as to get the 1st of 3 evals programmed into the ECM. After about a week, I have noticed the truck starts/runs smoother during its warm-up, and the warm-up isn’t as long. Another thing I noticed is the shifting changed. (Yes, it did). Instead of running through the 3 speeds quicker, it actually spreaded them out. (No, I’m not imagining things). As for MPG, I can’t really tell just yet. For around town, I might? …. be getting another 1-2 MPG more?, but still have some adjustments to do. Its the long run down south from me (a 16hr drive) where I’ll really tell the difference.Over-all, adding this sensor has shown to be an improvment.
Reviewer: nick
Rating: 5.0 out of 5 stars
Title: It works for me
Review: I installed on 93 k1500 just before I replaced the Y pipe and catalytic converter to get more flow. Yes, it made a difference in performance of the truck.
Reviewer: Twylla Francis
Rating: 5.0 out of 5 stars
Title: Great
Review: Good value at a great price
Reviewer: Marvin
Rating: 5.0 out of 5 stars
Title: New Sensor fixed my truck!
Review: I have a 94 C1500 305 GM truck, On its 3rd o2 sensor now, I see that they changed the design to a DENSO style o2 sensor. No complaints! One day my truck was running terrible in closed loop, Threw a o2 sensor code, I thought at around 60k miles of use on the old Ac delco replacement sensor it was time to replace it, I did, The fuel trims and performance with this o2 sensor is great! Easy fix, It took just a few minutes I even have a YouTube Video on it […]
Reviewer: Eric G.
Rating: 5.0 out of 5 stars
Title: Always replace your GM parts with new GM parts.
Review: Very easy to replace. Works like it was made for my truck because it was.
Reviewer: LDM
Rating: 5.0 out of 5 stars
Title: Works much better than the non heated units and gives far better …
Review: Used as a replacement for the single wire O2 sensor that my 89 Camaro IROCZ came with. Works much better than the non heated units and gives far better readings to the ECM. Helped eliminate the annoying idle surge issue that would happen once the car came up to temp and entered closed loop. Wire it up to a switched 12V source like the fuel pump relay so the heater only turns on when the engine is running.
Reviewer: Joey
Rating: 4.0 out of 5 stars
Title: Good
Review: Great replacement from the Bosch counterpart that finally died on me.
Reviewer: anthony flynn
Rating: 5.0 out of 5 stars
Title:
Review: everything worked perfect
Reviewer: Sylvain Lavigne
Rating: 5.0 out of 5 stars
Title:
Review: 1993 Motorhome 454 Chevy dual exhaust : I wanted to have better response from the O2 sensor so I added a 3 wire sensor . Shipping was fast and the product look good .
Reviewer: Josh
Rating: 5.0 out of 5 stars
Title:
Review: Use this O2 sensor for the 3 wire heated sensor upgrade for a 1990 gmc with a 305. Works excellent.
Reviewer: Shopper
Rating: 5.0 out of 5 stars
Title:
Review: Like
