



🔥 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 | #188,864 in Automotive ( See Top 100 in Automotive ) #843 in Automotive Replacement Oxygen Sensors |
| Brand | GM GENUINE PARTS |
| Customer Reviews | 4.4 4.4 out of 5 stars (155) |
| Date First Available | April 12, 2016 |
| Exterior | Painted |
| Global Trade Identification Number | 00808709410607 |
| Item Weight | 3.36 ounces |
| Item dimensions L x W x H | 18 x 1.5 x 1.1 inches |
| Item model number | 12643903 |
| Manufacturer | ACDelco |
| Manufacturer Part Number | 12661898 |
| Measurement Accuracy | ±1% |
| Measuring Range | 0% - 20% |
| Model | Heated Oxygen Sensor |
| Mounting Type | Flange Mount |
| OEM Part Number | 12661898 |
| Output Type | electrical signal |
| Product Dimensions | 18 x 1.5 x 1.1 inches |
| Sensing Distance | 2 Inches |
| Specific Uses For Product | Oxygen Sensor |
| Style | Modern |
| UPC | 808709410607 |
| Upper Temperature Rating | 800 Degrees Fahrenheit |
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
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.
R**N
Received USED part!
Part I received is clearly USED!!
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.
Trustpilot
Hace 3 semanas
Hace 2 meses