{"product_id":"acauto-oxygen-sensor-4-pack-for-chevy-gmc-cadillac-234-4012-234-4018-direct-fit-fast-heater","title":"ACAUTO Oxygen Sensor 4-Pack for Chevy GMC Cadillac (234-4012 \u0026 234-4018) — Direct-Fit, Fast-Heater","description":"\u003cp\u003e\u003cstrong\u003eACAUTO's 4-pack oxygen sensor set (234-4012 \u0026amp; 234-4018) is a direct-fit replacement designed to restore accurate air-fuel sensing on compatible Chevy, GMC and Cadillac V8\/V6 vehicles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese ACAUTO oxygen sensors are manufactured to match OE fit and function for upstream and downstream positions on many Silverado, Tahoe, Suburban, Sierra, Yukon, Express and Escalade models. Built from durable materials with a fast-acting heater element, the sensors are supplied with correct threads and pre-applied anti-seize where needed, making installation straightforward for mechanics and experienced DIYers. This description explains what these sensors do, which vehicles they fit, how they perform, and who should consider this 4-pack.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicle models and years will these ACAUTO oxygen sensors fit?\u003c\/h3\u003e\n\u003cp\u003eThe ACAUTO 234-4012 and 234-4018 sensors are designed as direct replacements for many Chevy, GMC and Cadillac applications. They cover upstream (pre-catalytic) and downstream (post-catalytic) positions across light-truck and SUV platforms.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChevrolet: Silverado 1500\/2500, Tahoe, Suburban, Avalanche, Astro, Express, C1500\/C2500\u003c\/li\u003e\n  \u003cli\u003eGMC: Sierra 1500\/2500, Yukon\/Yukon XL, Savana, Safari\u003c\/li\u003e\n  \u003cli\u003eCadillac: Escalade (models using these OE numbers)\u003c\/li\u003e\n  \u003cli\u003eConfirm fit by OE number or vehicle year\/engine before installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these sensors compare to the original equipment parts?\u003c\/h3\u003e\n\u003cp\u003eACAUTO sensors are engineered to match OE specifications for form, fit and electrical connections so they behave like factory parts once installed. Components include ceramic sensing elements, platinum conductive layers and 310S stainless steel protection for long life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInterchangeable OE numbers: 9617178, 234-4012, SG454, SG236, 13474, 234-4018\u003c\/li\u003e\n  \u003cli\u003eDurable materials: platinum, ceramics and 310S stainless steel\u003c\/li\u003e\n  \u003cli\u003ePre-coated threads and OE-style harness connectors for simple swaps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance features should I expect after installation?\u003c\/h3\u003e\n\u003cp\u003eExpect accurate oxygen sensing that helps the engine control module maintain proper air-fuel ratios and catalytic converter monitoring. The fast-acting heater shortens warm-up time so the sensor reaches optimal temperature quickly and provides reliable readings sooner.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFast heater design for rapid operational temperature\u003c\/li\u003e\n  \u003cli\u003eResponsive voltage output for steady oxygen measurement\u003c\/li\u003e\n  \u003cli\u003eSuitable for both planar and wire-thimble sensor types depending on position\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what should I prepare?\u003c\/h3\u003e\n\u003cp\u003eInstallation is intended to be straightforward: these are direct replacements with OE-style connectors and pre-applied anti-seize on threads. Basic tools and safety precautions are all that’s required, though a correct-fitting oxygen sensor socket and torque wrench are recommended for best results.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit OE connectors reduce wiring or adapter needs\u003c\/li\u003e\n  \u003cli\u003eThreads pre-coated with anti-seize to ease removal later\u003c\/li\u003e\n  \u003cli\u003eRecommended tools: O2 sensor socket, ratchet, torque wrench, penetrating oil\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This ACAUTO 4-pack is aimed at owners, technicians and fleet managers working on late-model Chevy, GMC and Cadillac trucks and SUVs that require 234-4012 or 234-4018 style oxygen sensors. It’s a suitable option for those who want direct-fit replacements with durable materials and quicker sensor warm-up, whether you're replacing a faulty sensor, performing preventive maintenance, or servicing multiple vehicles.\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: Are these ACAUTO sensors direct replacements for OE parts?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 234-4012 and 234-4018 sensors are direct-fit replacements matching OE connectors and thread specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these sensors include anti-seize and heater elements?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Threads come pre-coated with anti-seize and the sensors feature fast-acting heaters for quick warm-up.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ACAUTO","offers":[{"title":"Default Title","offer_id":55168433291607,"sku":"B0CQTDKLR3","price":52.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/acauto-front-packaging-oxygen-sensors.jpg?v=1790403841","url":"https:\/\/britishgarage.co.uk\/products\/acauto-oxygen-sensor-4-pack-for-chevy-gmc-cadillac-234-4012-234-4018-direct-fit-fast-heater","provider":"British Garage","version":"1.0","type":"link"}