--- product_id: 806920215 title: "Downstream Oxygen Sensor for Buick for Rainier 2004-2005 for Chevrolet for Colorado 2004-2005 for GMC for Savana 1500 2003-2007 for Pontiac G6 2006-2007 for Saab 9-7x 2005, 234-4285 O2 Sensor" brand: "azhz" price: "$400.79" currency: USD in_stock: true reviews_count: 2 category: "Azhz" url: https://www.desertcart.ec/products/806920215-downstream-oxygen-sensor-for-buick-for-rainier-2004-2005-chevrolet store_origin: EC region: Ecuador --- # High heat welding for superior sealing Built-in heater for rapid ignition Direct OE fitment for multiple GM models Downstream Oxygen Sensor for Buick for Rainier 2004-2005 for Chevrolet for Colorado 2004-2005 for GMC for Savana 1500 2003-2007 for Pontiac G6 2006-2007 for Saab 9-7x 2005, 234-4285 O2 Sensor **Brand:** azhz **Price:** $400.79 **Availability:** βœ… In Stock ## Summary > πŸ”₯ Upgrade your ride’s breathability β€” don’t let your engine miss a beat! ## Quick Answers - **What is this?** Downstream Oxygen Sensor for Buick for Rainier 2004-2005 for Chevrolet for Colorado 2004-2005 for GMC for Savana 1500 2003-2007 for Pontiac G6 2006-2007 for Saab 9-7x 2005, 234-4285 O2 Sensor by azhz - **How much does it cost?** $400.79 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/806920215-downstream-oxygen-sensor-for-buick-for-rainier-2004-2005-chevrolet) ## Best For - azhz enthusiasts ## Why This Product - Trusted azhz brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Fuel Economy Booster:** Maintains ideal engine temperature to reduce emissions and maximize mileage - β€’ **Rapid Engine Response:** Integrated heater accelerates ignition, optimizing fuel efficiency and performance - β€’ **Plug & Play Installation:** Exact female terminal match guarantees effortless swap without modifications - β€’ **Durable High-Heat Welding:** Advanced sealing technology ensures long-lasting sensor reliability under extreme conditions - β€’ **Precision OE Compatibility:** Seamlessly fits Buick, Chevrolet, GMC & more (2002-2008) for hassle-free upgrades ## Overview The AZHZ Downstream Oxygen Sensor (234-4285) is a precision-engineered replacement part designed for seamless compatibility with a wide range of Buick, Chevrolet, GMC, Pontiac, and Saab models from 2002 to 2008. Featuring a built-in heater and high-heat welding technology, it ensures rapid sensor activation and superior sealing for enhanced engine performance and fuel efficiency. With exact OE plug fitment, this sensor offers a straightforward installation experience, helping maintain optimal engine operation and reduce emissions. ## Description Compatibility with the Vehiclefor Buick for Rainier 2004-2005for Chevrolet for Colorado 2004-2005for Chevrolet for Express 1500 2003-2007for Chevrolet for Express 2500 2003-2007for Chevrolet for Express 3500 2003-2007for Chevrolet for Malibu 2004 2006-2008for Chevrolet for Trailblazer 2002-2006for Chevrolet for Trailblazer EXT 2002-2005for GMC for Canyon 2004-2005for GMC for Envoy 2002-2005for GMC for Envoy XL 2002-2005for GMC for Envoy XUV 2004-2005for GMC for Savana 1500 2003-2007for GMC for Savana 2500 2003-2007for GMC for Savana 3500 2003-2007for Isuzu for Ascender 2003-2005for Oldsmobile for Bravada 2002-2004for Pontiac for G6 2006-2007for Saab for 9-7x 2005 Review: Not recommended put it on and had a broke wire causing it to give a different code saying the 02 oxygen sensor heater the mechanic said that one of the wires is broke making it give that code Review: Great price but sets a code for faulty heater circuit. ## Features - Fitment - - Heated Oxygen Sensor for Buick for Rainier 2004-2005 for Chevrolet for Colorado 2004-2005 for Chevrolet for Express 1500 2003-2007 for Chevrolet for Express 2500 2003-2007 for Chevrolet for Express 3500 2003-2007 for Chevrolet for Malibu 2004 2006-2008 for Chevrolet for Trailblazer 2002-2006 for Chevrolet for Trailblazer EXT 2002-2005 for GMC for Canyon 2004-2005 for GMC for Envoy 2002-2005 for GMC for Envoy XL 2002-2005 for GMC for Envoy XUV 2004-2005 for GMC Savana 1500 2003-2007 - Replace OE Number - - O2 oxygen sensor replacement 234-4285 213-1148 - Product specification - - 13.39in.; Wires: 4, Package Includes: 1 x O2 Sensor; Terminal Gender: Female - Excellent Quality - - AZHZ oxygen o2 sensor adopts high heat welding technology, with stronger sealing performance. Built-in heater accelerates ignition and improves fuel efficiency. Keep your engine at ideal operating temperature, improve engine performance and fuel economy. ATTENTION: Please compare your part picture with us, especially the PLUG, which must be identical. Otherwise it doesn't fit your car! - Non-Infringement Disclaimer for Auto Parts Sales - - Please note that all mentions of brand names and models are for compatibility purposes only and do not imply any association with or endorsement by the original manufacturer ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DST23SK6 | | Are batteries included? | No | | Brand | AZHZ | | Colour | As Shown | | Customer Reviews | 3.2 3.2 out of 5 stars (4) | | Date First Available | 7 March 2025 | | Item Dimensions LxWxH | 14.5 x 6.5 x 4.5 Centimeters | | Item Height | 4.5 Centimeters | | Item Weight | 110 g | | Item Width | 6.5 Centimeters | | Item model number | Adjustable | | Manufacturer | AZHZ | | Model number | Adjustable | | Number of Memory Sticks | 1 | | Product Dimensions | 14.5 x 6.5 x 4.5 cm; 110 g | ## Images ![Downstream Oxygen Sensor for Buick for Rainier 2004-2005 for Chevrolet for Colorado 2004-2005 for GMC for Savana 1500 2003-2007 for Pontiac G6 2006-2007 for Saab 9-7x 2005, 234-4285 O2 Sensor - Image 1](https://m.media-amazon.com/images/I/61BAZHQ+cvL.jpg) ## Customer Reviews ### ⭐ Review *by A***L on 28 January 2026* Not recommended put it on and had a broke wire causing it to give a different code saying the 02 oxygen sensor heater the mechanic said that one of the wires is broke making it give that code ### ⭐⭐⭐ Review *by C***T on 20 April 2025* Great price but sets a code for faulty heater circuit. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ec/products/806920215-downstream-oxygen-sensor-for-buick-for-rainier-2004-2005-chevrolet](https://www.desertcart.ec/products/806920215-downstream-oxygen-sensor-for-buick-for-rainier-2004-2005-chevrolet) --- *Product available on Desertcart Ecuador* *Store origin: EC* *Last updated: 2026-07-13*