Search Bar 3
Air Intake & Fuel Delivery
Brakes
Cooling Systems
Engine Components
Gaskets
Lighting
Suspension & Steering
Wheels, Tires & Parts
Interior Accessories
Exterior Accessories
Home
Oxygen Sensor - ACDelco (12656071)

Oxygen Sensor - ACDelco (12656071)

ACDelcoMPN12656071
Sale Price$87.81
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). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Ships To You

Ready to ship today.

My Location
Shop for related parts inEmission Modules & Control Units

Product Details

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). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Part Number (MPN)
12656071
Brand
ACDelco
SKU
12656071
UPC / GTIN
808709079828 / 00808709079828
Condition
New
Other Names
12656071
Position
Downstream Left, Downstream Right
Brand
GM Genuine Parts
Connector Gender
Female
Connector Shape
triangular
Features & Benefits - Bullet 1
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
Features & Benefits - Bullet 2
Detects oxygen content in the exhaust gases to help optimize emissions
Features & Benefits - Bullet 3
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
Features & Benefits - Bullet 4
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
Features & Benefits - Bullet 5
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
Features & Benefits - Bullet 6
GM regularly updates production and service part designs to integrate new materials and technologies
Grade Type
Regular
Height (in)
3.03
Length (in)
8.06
Length (mm)
359.4
Mounting Type
Threaded
Overall Length
359<br />14.13
PADB ID 557
18<br />0.71
Programming Required
Yes
Sensor Type
Heated
Terminal Gender
Male
Terminal Quantity
4
Terminal Type
Blade
Thread Size
M18x1.5
Weight (lb)
0.21
Width (in)
3.03
Wire Quantity
4
Wiring Harness Length
275<br />10.83
Wrench Size
22

YearMakeModelBody & TrimEngine & Transmission
Vehicle #1
Year
Make
Model
Body & Trim
Engine & Transmission

BrandEquivalent Part Numbers

Rows per page:

0-0 of 0

BrandEquivalent Part Numbers
GM
12656071

Shipping Policy

At AyoParts, we’re committed to delivering high-quality automotive parts with speed, reliability, and care. Our mission is to ensure you get the parts you need to keep your vehicle running at its best—quickly, efficiently, and hassle-free... Check out our Shipping Policy for more details.

Return Policy

At AyoParts, your satisfaction is important to us. If you need to return an item, please review the guidelines below to ensure a smooth and efficient process... Check out our Return Policy for more details.

ACDelco

Find quality aftermarket auto parts fast. AYO Parts offers trusted brands, great prices, and quick shipping for cars, trucks & SUVs.

Browse the Full ACDelco Parts Catalog

AYOparts.com

At AYO Parts, we’re driven by one mission — to get you the right aftermarket parts, fast. Whether you’re a professional mechanic or a DIY enthusiast, we offer a wide range of high-quality, reliable components for cars, trucks, and SUVs.

Our team combines deep industry expertise with a passion for service, ensuring you get accurate fitment, competitive prices, and quick delivery. We partner with trusted brands to help you keep vehicles performing at their best — without the hassle.

From everyday maintenance items to hard-to-find components, AYO Parts​ is your go-to source for aftermarket automotive solutions.