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The GM Genuine Parts 12627139 Heater Oxygen Sensor is a high-precision OE sensor designed to optimize your GM vehicle’s engine performance by accurately measuring exhaust oxygen levels. With a rapid 5-minute response time and heat resistance up to 850°C, it ensures efficient fuel combustion, reduced emissions, and reliable operation under extreme conditions. Engineered and validated by GM, this sensor guarantees perfect fit and durability for Chevrolet, Buick, GMC, and Cadillac vehicles.



| ASIN | B008MOQID4 |
| Best Sellers Rank | #367,227 in Automotive ( See Top 100 in Automotive ) #1,734 in Automotive Replacement Oxygen Sensors |
| Brand | GM GENUINE PARTS |
| Brand Name | GM GENUINE PARTS |
| Customer Reviews | 4.2 out of 5 stars 118 Reviews |
| Included Components | Sensor Asm |
| Item Dimensions | 8.2 x 3.2 x 3.2 inches |
| Item Type Name | Sensor Asm |
| Item Weight | 3.52 ounces |
| Item dimensions L x W x H | 8.2 x 3.2 x 3.2 inches |
| Manufacturer | ACDelco |
| Material | Ceramic, Stainless Steel |
| Material Type | Ceramic, Stainless Steel |
| Measurement Accuracy | ±1% |
| Measuring Range | 0-100% O2 |
| Model | 12627139 |
| Mounting Type | Flange Mount |
| Output Type | Push-Pull |
| Part Number | 12643707 |
| Response Time | 5 minutes |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specific Uses For Product | Oxygen Sensor |
| Style | Modern |
| Style Name | Modern |
| UPC | 808709376804 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 850 Degrees Celsius |
| 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. |
P**N
OE fit
You can never go wrong with Acdelco parts on GM vehicles. Worked like a dream.
A**R
perfect replacement for G.M cars
perfect replacement for my 2014 chevy malibu. due recommend
L**D
Good o2 sensor OEM
Correct o2 sensor recieved. That’s 1 of 2. Still haven’t recieved my money for the the number 2 which was the wrong part.
L**O
Great quality, packaging was sufficient
O2 sensors are heavily misdiagnosed, however after having my Chevy for 140K miles I figured it’s time to replace it. The sensor, alongside some anti seize and a bolt loosener.. was a very easy change. Buy the o2 sensor sockets and you’ll be certain to have an easy time.
S**I
U ain't getting any pics I cleaned them and installed them already
I want a partial refund cuz neither one of these o2 sensors had the protective caps on them that they're supposed to have on them, and i used to work auto parts so dont try me GM, and left both sensors a yucky anti seize MESS that i had to be clean and was all over the wiring harness and sensor and the one looks like someone bought the damn sensor, installed the damn sensor, and took it right back off and returned it... so I want as close to a 50% refund of the price I paid for both sensors as I can get... I don't appreciate getting GM genuine parts not packaged properly, and they BEST work after having all that anti seize all over them that I had to clean off and I better not have to wait for a replacement set cuz they end up not working properly or im gonna be really pissed off
S**N
FIXED
My 2014 Malibu 2.5 was has cold start stalling issues and this completely fixed the issue.
D**M
May not be new
The item in the box appeared to be used. Scratched, missing protective cover, thermal paste was messed up, and free floating in the box. DENSO numbers on the item were correct (Denso makes the OE sensors). Being in a bind I installed it anyway. It appears to be working correctly at this time.
G**R
OEM every time
GM OEM. Can’t get any better.
Trustpilot
2 weeks ago
1 day ago