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🔥 Drive smarter, cleaner, and faster with GM Genuine Precision!
The GM Genuine Parts 12661898 Heated Oxygen Sensor is a factory-recommended, OE-spec sensor engineered to precisely measure oxygen content in exhaust gases. Featuring a heated design for rapid response and ±1% accuracy, it enables your vehicle’s ECM to optimize fuel economy, reduce emissions, and maintain peak engine performance. Designed for a perfect flange mount fit, this sensor guarantees reliable, long-lasting operation backed by GM’s rigorous quality standards.
























| ASIN | B01E6FMZ2K |
| Best Sellers Rank | #553,673 in Automotive ( See Top 100 in Automotive ) #2,946 in Automotive Replacement Oxygen Sensors |
| Brand Name | GM GENUINE PARTS |
| Customer Reviews | 4.4 4.4 out of 5 stars (159) |
| Global Trade Identification Number | 00808709410607 |
| Included Components | Heated Oxygen Sensor |
| Item Dimensions | 18 x 1.5 x 1.1 inches |
| Item Type Name | Heated Oxygen Sensor |
| Item Weight | 0.21 Pounds |
| Manufacturer | ACDelco |
| Measurement Accuracy | ±1% |
| Measuring Range | 0% - 20% |
| Model | 12643903 |
| Mounting Type | Flange Mount |
| Output Type | electrical signal |
| Part Number | 12661898 |
| Sensing Distance | 2 Inches |
| Specific Uses For Product | Oxygen Sensor |
| Style Name | Modern |
| UPC | 808709410607 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 800 Degrees Fahrenheit |
| Warranty Description | 24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details. |
S**.
Finally eliminated my Check Engine light
Solved my downstream cold air exhaust issue on start up.
M**E
Perfect fit
Exact replacement for the original part. No more trouble code, satisfied.
G**C
Worked well
Had to get an original gm part because off brands don’t work. It worked well for the price. Used it for a 2013 Malibu
S**I
Used sensor was sent!
I was sent a used o2 sensor with tip was discolored from heat. It didn't come wrapped in a rubber band, or in a baggy, or with any type of instructions. It was just thrown in a gm box. A total rip off!
J**E
works
got it installed after a bit of trouble getting the old plug disconnected fits fine and cleared the dash light.
J**C
Oe part
Exact match
B**Y
Perfect
Fit as described.
J**E
good price
work great
P**I
Compre este producto porque era el No de Parte exacto para mi vehiculo, lo recibi y la caja decia "GE Genuine" pero cuando abri la caja el cable venia asi solo, sin nada que lo protegiera, una bolsa o algo, lo unico que venia era el cable con algo de grasa en la rosca y esa misma grasa habia manchado el cable y el conector. Empece a dudar si tal vez me habian enviado un cable usado, parece que no, pero para ser una parte original el que no viniera protegida con una bolsa y con la grasa en un empaque aparte, me dio algo de desconfianza. Por otro, lado lleve mi auto a la agencia de GM para que le reemplazaran lo sensores de oxigeno, el otro que compre era de otra marca no GM geniune, pero de todas maneras, en la agencia me dijeron que no me daban garantia sobre el trabajo a realizar si las piezas no eran compradas en la agencia, por tanto, no se instaló esta sensor en mi vehiculo y preferi comprarlo en la agencia para tener la garantia de la pieza y la mano de obra. Tal vez, mas adelante, considere arriesgarme y no tener garantia pero ahorrar un poco mas en las refacciones.
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