GM Genuine Parts ACDelco heated oxygen sensor 12657188 improves engine monitoring and fuel efficiency
GM Genuine Parts ACDelco heated oxygen sensor 12657188 improves engine monitoring and fuel efficiency

GM Genuine Parts ACDelco Heated Oxygen Sensor 12657188 – OE Replacement

GM Genuine Parts ACDelco Heated Oxygen Sensor 12657188 GM Genuine Parts Oxygen (O2) sensors are designed, engineered,...
Vendor: GM GENUINE PARTS
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GM Genuine Parts ACDelco heated oxygen sensor 12657188 improves engine monitoring and fuel efficiency

GM Genuine Parts ACDelco Heated Oxygen Sensor 12657188 – OE Replacement

£56.35
GM Genuine Parts ACDelco heated oxygen sensor 12657188 improves engine monitoring and fuel efficiency

GM Genuine Parts ACDelco Heated Oxygen Sensor 12657188 – OE Replacement

£56.35
Description
Description
x

GM Genuine Parts ACDelco Heated Oxygen Sensor 12657188

GM Genuine Parts Oxygen (O2) sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sensors serve as feedback devices in your vehicle’s exhaust system, measuring the proportion of oxygen in exhaust gases. By providing real-time data, the engine control module (ECM) can adjust the air/fuel ratio toward the typical target of 14.7:1. When the balance is well maintained, many drivers associate steadier performance, more consistent emissions readings, and potential fuel-management improvements. This specific part, 12657188, is a genuine AC Delco heated O2 sensor crafted for GM vehicles.

Key benefits

  • OE-grade fit and performance backed by GM
  • Heated design stabilizes readings during cold starts
  • Supports efficient fuel delivery and exhaust monitoring
  • Direct replacement that preserves the original system setup

What to expect in everyday use

In routine driving, sensor data helps the ECM respond to changes in exhaust composition more quickly. You might notice smoother engine behavior during cold starts, more stable idle, and steadier acceleration when data from the exhaust stream is accurately fed to the ECM. Outcomes vary by vehicle, driving conditions, and maintenance history; this description highlights possibilities rather than guarantees.

Specs at a glance

  • Brand: GM Genuine Parts / AC Delco
  • Part number: 12657188
  • Type: Heated Oxygen Sensor
  • Quantity: 1 sensor
  • Compatibility: Designed for GM vehicles; please verify fitment before purchase

Why choose GM Genuine Parts? These genuine OE sensors are built to mirror the original equipment experience, helping maintain proper exhaust gas monitoring. The heated element speeds up warm-up, enabling quicker, more reliable readings after cold starts. While this description discusses potential benefits, actual results may vary by vehicle and operating conditions.

FAQ

Q: What is the GM Genuine Parts ACDelco Heated Oxygen Sensor 12657188?

A: A factory-grade O2 sensor designed for GM vehicles, helping monitor exhaust oxygen levels and assist ECM fuel calculations.

Q: Is this sensor compatible with my GM vehicle?

A: Please check your vehicle fitment using the GM OE part number 12657188 or your VIN with the GM Parts catalog.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

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When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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