{"product_id":"gm-genuine-parts-acdelco-heated-oxygen-sensor-12657188-oe-replacement","title":"GM Genuine Parts ACDelco Heated Oxygen Sensor 12657188 – OE Replacement","description":"\u003ch2\u003eGM Genuine Parts ACDelco Heated Oxygen Sensor 12657188\u003c\/h2\u003e\n\u003cp\u003eGM 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.\u003c\/p\u003e\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOE-grade fit and performance backed by GM\u003c\/li\u003e\n  \u003cli\u003eHeated design stabilizes readings during cold starts\u003c\/li\u003e\n  \u003cli\u003eSupports efficient fuel delivery and exhaust monitoring\u003c\/li\u003e\n  \u003cli\u003eDirect replacement that preserves the original system setup\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat to expect in everyday use\u003c\/h3\u003e\n\u003cp\u003eIn 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.\u003c\/p\u003e\n\u003ch3\u003eSpecs at a glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBrand: GM Genuine Parts \/ AC Delco\u003c\/li\u003e\n  \u003cli\u003ePart number: 12657188\u003c\/li\u003e\n  \u003cli\u003eType: Heated Oxygen Sensor\u003c\/li\u003e\n  \u003cli\u003eQuantity: 1 sensor\u003c\/li\u003e\n  \u003cli\u003eCompatibility: Designed for GM vehicles; please verify fitment before purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhy 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.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the GM Genuine Parts ACDelco Heated Oxygen Sensor 12657188?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: A factory-grade O2 sensor designed for GM vehicles, helping monitor exhaust oxygen levels and assist ECM fuel calculations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this sensor compatible with my GM vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Please check your vehicle fitment using the GM OE part number 12657188 or your VIN with the GM Parts catalog.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GM GENUINE PARTS","offers":[{"title":"Default Title","offer_id":42471004143701,"sku":"B07JBJ9LQB","price":56.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/gm-genuine-parts-acdelco-heated-oxygen-sensor-12657188.jpg?v=1778160303","url":"https:\/\/plentytorque.co.uk\/products\/gm-genuine-parts-acdelco-heated-oxygen-sensor-12657188-oe-replacement","provider":"PlentyTorque","version":"1.0","type":"link"}