Air and Fuel› Oxygen Sensors, Controllers and Components

GM

Heated Oxygen Sensor

$77.99

SKU: 12645561

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The GM Genuine Parts 12645561 is a heated oxygen sensor designed for specific fitment, featuring an oval connector shape and a 22mm wrench size. This component is critical for monitoring oxygen levels in the exhaust stream, contributing to optimal engine performance and emissions control. This oxygen sensor is noted to require programming and/or special setup procedures. GM Service Information outlines the necessary procedures and special tools required to ensure its proper function after installation. It is engineered as a direct replacement part. This specific heated oxygen sensor is compatible with various Cadillac models, including the ATS (2.0L, 2.5L) and CTS (2.0L) from model years 2013 through 2016.

Fitment

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Specifications

BrandGM
Part Number12645561
CategoryAir and Fuel

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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