---
product_id: 52499802
title: "GM Genuine Parts 12627139 Heater Oxygen Sensor"
brand: "gm genuine parts"
price: "€ 84.59"
currency: EUR
in_stock: true
category: "Gm Genuine Parts"
url: https://www.desertcart.pt/products/52499802-gm-genuine-parts-12627139-heater-oxygen-sensor
store_origin: PT
region: Portugal
---

# ±1% measurement accuracy 850°C heat tolerance 5 min fast response GM Genuine Parts 12627139 Heater Oxygen Sensor

**Brand:** gm genuine parts
**Price:** € 84.59
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay ahead of the curve with GM’s precision oxygen sensor — because your ride deserves genuine performance.

## Quick Answers

- **What is this?** GM Genuine Parts 12627139 Heater Oxygen Sensor by gm genuine parts
- **How much does it cost?** € 84.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/52499802-gm-genuine-parts-12627139-heater-oxygen-sensor)

## Best For

- gm genuine parts enthusiasts

## Why This Product

- Trusted gm genuine parts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Genuine OE Quality Backed by GM:** Tested and validated by GM engineers for your Chevrolet, Buick, GMC, or Cadillac.
- • **Built to Endure Extreme Conditions:** Operates flawlessly up to 850°C for reliable long-term use.
- • **Rapid Feedback for Real-Time Efficiency:** 5-minute response time ensures your engine adapts instantly.
- • **Precision Engineered for Peak Performance:** Achieve optimal air/fuel ratio with ±1% oxygen measurement accuracy.
- • **Seamless Integration with Vehicle Systems:** Designed for exact fit and requires professional programming for flawless operation.

## Overview

The GM Genuine Parts 12627139 Heater Oxygen Sensor is a high-precision, OE-quality sensor engineered to optimize your vehicle’s air/fuel ratio by accurately measuring oxygen levels in exhaust gases. Built to withstand extreme temperatures up to 850°C and delivering rapid 5-minute response times, this sensor ensures peak engine performance, improved fuel economy, and reduced emissions. Backed by GM’s rigorous testing and a 24-month unlimited mile warranty, it’s the trusted choice for Chevrolet, Buick, GMC, and Cadillac owners seeking reliable, factory-grade replacement parts.

## Description

GM Genuine Parts Oxygen (O2) Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sensors are special feedback sensors on your vehicle's exhaust system and measure the proportion of oxygen in exhaust gases. Using this measurement, the engine control module (ECM) can adjust the air/fuel ratio to near the optimal value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

## Features

- This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
- Detects oxygen content in the exhaust gases to help optimize emissions
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008MOQID4 |
| Best Sellers Rank | #328,941 in Automotive ( See Top 100 in Automotive ) #1,402 in Automotive Replacement Oxygen Sensors |
| Brand | GM GENUINE PARTS |
| Brand Name | GM GENUINE PARTS |
| Customer Reviews | 4.2 out of 5 stars 123 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. |

## Product Details

- **Brand:** GM GENUINE PARTS
- **Item Weight:** 0.22 Pounds
- **Item dimensions L x W x H:** 8.2 x 3.2 x 3.2 inches
- **Measurement Accuracy:** ±1%
- **Style:** Modern

## Images

![GM Genuine Parts 12627139 Heater Oxygen Sensor - Image 1](https://m.media-amazon.com/images/I/51IXqeW2K8L.jpg)

## Questions & Answers

**Q: What are the symptoms of a bad O2 sensor?**
A: A failing or failed O2 sensor may not detect the engine’s air-fuel ratio running too rich or too lean. Common signs include an illuminated check engine light, poor fuel economy, rough idling or failed emissions testing.

**Q: Can a bad O2 sensor cause the check engine light to come on?**
A: Yes. When incorrect oxygen levels are detected in the exhaust, the sensor will trigger the sensor to send a fault code and turn on the check engine light.

**Q: Will replacing an O2 sensor improve gas mileage?**
A: A properly functioning O2 sensor can help the vehicle maintain the optimal air-fuel ratio for combustion, helping balance fuel economy, engine performance and emissions.

**Q: How long do O2 sensors last?**
A: O2 sensors can last between 60,000 and 100,000 miles. However, O2 sensor longevity depends on numerous factors including heat, carbon buildup and normal wear.

**Q: Why choose GM Genuine Parts O2 sensors instead of aftermarket brands?**
A: GM Genuine Parts O2 sensors are engineered to original equipment specifications for precise fit, form and function. They are designed to integrate seamlessly with your vehicle’s engine.

## Frequently Bought Together

- GM 12627139 Original Equipment Heated Oxygen Sensor
- General Motors GM Genuine Parts 12661898 Heated Oxygen Sensor
- TEKTON 3/8 Inch Drive x 7/8 Inch 6-Point Oxygen Sensor Socket | 4929

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-10-13*