--- product_id: 7701833 title: "Denso Oxygen (O2) Sensor - 234-4018 (Fits Select Models and Years of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac Vehicles)" brand: "denso" price: "9650 kr" currency: ISK in_stock: true reviews_count: 13 category: "Denso" url: https://www.desertcart.is/products/7701833-denso-oxygen-o2-sensor-234-4018-fits-select-models-years store_origin: IS region: Iceland --- # Boosts fuel efficiency by up to 15% Withstands up to 1000°F heat Plug & play easy installation Denso Oxygen (O2) Sensor - 234-4018 (Fits Select Models and Years of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac Vehicles) **Brand:** denso **Price:** 9650 kr **Availability:** ✅ In Stock ## Summary > ⛽ Upgrade your ride’s brain for smarter, cleaner drives! ## Quick Answers - **What is this?** Denso Oxygen (O2) Sensor - 234-4018 (Fits Select Models and Years of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac Vehicles) by denso - **How much does it cost?** 9650 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/7701833-denso-oxygen-o2-sensor-234-4018-fits-select-models-years) ## Best For - denso enthusiasts ## Why This Product - Trusted denso brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Turnkey Upgrade:** Simple surface mount design means no mechanic needed—get your check engine light off fast. - • **Precision OE Fit:** Engineered for exact replacement, ensuring first-time perfect fit across 50+ GM models. - • **Fuel-Smart Sensor:** Optimizes air-fuel mix to slash fuel consumption and reduce emissions. - • **Silicone & Lead Shield:** Exclusive aluminum oxide trap protects sensor from poisoning, extending lifespan. - • **Durability Meets Performance:** Built with stainless steel & zirconium for long-lasting reliability under extreme heat. ## Overview The Denso 234-4018 Oxygen Sensor is a high-precision replacement part designed to fit a wide range of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles from the late 90s to early 2000s. Manufactured to strict OE standards, it features advanced materials and a unique protective layer to ensure accurate sensing, improved fuel efficiency, and extended durability even under extreme temperatures up to 1000°F. Easy to install and highly rated by users, it’s the go-to sensor for restoring optimal engine performance and eliminating check engine warnings. ## Description Denso part number 234-4018 is a replacement narrow-band Oxygen (O2) Sensor with 4 wire 15.35 inch long wiring harness for:Buick: (1997-2000 Century, 1997-2003 LeSabre, 1997-2003 Park Avenue, 1997-2003 Regal, 1997-1999 Riviera, 1997-1998 Skylark)Cadillac: (1996-1999 DeVille, 1996-2000 Eldorado, 1999-2000 & 2002 Escalade, 2002 Escalade EXT, 1996-2000 Seville)Chevrolet: (1996-1997 Astro, 2002 Avalanche 1500, 1996-1999 C1500, 1996-1999 C1500 Suburban, 1996-2000 C2500, 1996-1999 C2500 Suburban, 1996-2000 C3500, 1997-2002 Camaro, 1996-2002 Express 1500, 1996-2002 Express 2500, 1996-2002 Express 3500, 1996 G30, 2000-2003 Impala, 1996-1999 K1500, 1996-1999 K1500 Suburban, 1996-2000 K2500, 1996-1999 K2500 Suburban, 1996-2000 K3500, 1997-2001 Lumina, 1997-2000 Malibu, 1997-2003 Monte Carlo, 1996-1999 P30, 1999-2002 Silverado 1500, 2001 Silverado 1500 HD, 1999-2001 Silverado 2500, 2001 Silverado 2500 HD, 2001 Silverado 3500, 2000-2002 Suburban 1500, 2000-2001 Suburban 2500, 1996-2002 Tahoe, 1997-2000 Venture)GMC: (1996-1999 C1500, 1996-1999 C1500 Suburban, 1996-2000 C2500, 1996-1999 C2500 Suburban, 1996-2000 C3500, 1996 G3500, 1996-1999 K1500, 1996-1999 K1500 Suburban, 1996-2000 K2500, 1996-1999 K2500 Suburban, 1996-2000 K3500, 1996-1999 P3500, 1996-1997 Safari, 1996-2002 Savana 1500, 1996-2002 Savana 2500, 1996-2002 Savana 3500, 1999-2002 Sierra 1500, 2001 Sierra 1500 HD, 1999-2001 Sierra 2500, 2001 Sierra 2500 HD, 2001 Sierra 3500, 1996-2002 Yukon, 2000-2002 Yukon XL 1500, 2000-2001 Yukon XL 2500)Oldsmobile: (1997-1999 88, 1997-1998 Achieva, 1999-2000 Alero, 1996-1999 Aurora, 1997-1999 Cutlass, 1997 Cutlass Supreme, 1998-1999 Intrigue, 1997-1999 LSS, 1997-1998 Regency, 1997-2000 Silhouette)Pontiac: (1997-2003 Bonneville, 1997-2002 Firebird, 1997-2000 Grand Am, 1997-2003 Grand Prix, 1999-2000 Montana, 1997-1999 Trans Sport)Denso Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled performance. Each component is precision built for exact replacement, and a first time fit. This innovative line features Denso's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead poisoning for improved engine performance, greater fuel efficiency, and unparalleled longevity. Denso gives you the right part and the right fit, the first time. Review: reliable component - Great fit for my truck, easy to install, and turned my check engine light off since installing. Review: Highly recommend - Perfect fit, resolved the issue. Very pleased with this purchase. ## Features - Efficient Fuel Consumption - Easy installation - Constructed from high quality material - Manufactured with precision to meet OE standards ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000C5WCOA | | Best Sellers Rank | #54,654 in Automotive ( See Top 100 in Automotive ) #77 in Automotive Replacement Oxygen Sensors | | Brand | Denso | | Brand Name | Denso | | Customer Reviews | 4.6 out of 5 stars 899 Reviews | | Global Trade Identification Number | 00042511140189 | | Included Components | Oxygen (O2) Sensor | | Item Dimensions | 5.75 x 2.19 x 1.88 inches | | Item Type Name | Oxygen Sensor | | Item Weight | 0.25 Pounds | | Item dimensions L x W x H | 5.75 x 2.19 x 1.88 inches | | Manufacturer | Denso | | Material | Stainless Steel, Zirconium | | Material Type | Stainless Steel, Zirconium | | Measurement Accuracy | ±1.5% | | Model | 234-4018 | | Mounting Type | Surface Mount | | Output Type | electrical signal | | Part Number | 234-4018 | | Sensing Distance | 5 Centimeters | | Smart Home Compatibility | Not Smart Home Compatible | | Specific Uses For Product | Replacement Oxygen (O2) Sensor | | Style | Replacement Part | | Style Name | Replacement Part | | UPC | 042511140189 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 1000 Degrees Fahrenheit | | Warranty Description | 30 Days | ## Product Details - **Brand:** Denso - **Item Weight:** 0.25 Pounds - **Item dimensions L x W x H:** 5.75 x 2.19 x 1.88 inches - **Material:** Stainless Steel, Zirconium - **Style:** Replacement Part ## Images ![Denso Oxygen (O2) Sensor - 234-4018 (Fits Select Models and Years of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac Vehicles) - Image 1](https://m.media-amazon.com/images/I/51ciW5Dg2QL.jpg) ![Denso Oxygen (O2) Sensor - 234-4018 (Fits Select Models and Years of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac Vehicles) - Image 2](https://m.media-amazon.com/images/I/41VppcNB1YL.jpg) ![Denso Oxygen (O2) Sensor - 234-4018 (Fits Select Models and Years of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac Vehicles) - Image 3](https://m.media-amazon.com/images/I/41BL9dHczYL.jpg) ![Denso Oxygen (O2) Sensor - 234-4018 (Fits Select Models and Years of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac Vehicles) - Image 4](https://m.media-amazon.com/images/I/41RPQQG-R3L.jpg) ![Denso Oxygen (O2) Sensor - 234-4018 (Fits Select Models and Years of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac Vehicles) - Image 5](https://m.media-amazon.com/images/I/4109uRvYTML.jpg) ## Questions & Answers **Q: I bought o2 sensor the end is wrong has male end on it ! the up stream on a 1999 GMC suburban !** A: so what is your question??? **Q: Does it have a 4 flat or 4 square plug?** A: Hi Justin it is a 4 square plug. Here is the picture from the Densoautoparts website:http://densoautoparts.com/find-my-part/vehicle-selection. You can put your car's (or truck) year. make,ect. and get the sensor's picture from clicking a camera symbol. Hope this helps. I am a big fan of denso (used to be nippondenso) parts. Quality stuff and not too pricey. **Q: 03 Chevy Monte Carlo downstream 3800 will it fit** A: It fit my 1999 Pontiac Bonneville with the 3800,works great **Q: Does the sensor come with wiring harness and plug** A: No. Wiring the old connector was not difficult, but you must be careful choosing the right wires as colors were not the same as my 2003 Buick. More importantly, the output didn't match and I replaced it with OEM ACDelco that worked perfectly. ## Customer Reviews ### ⭐⭐⭐⭐⭐ reliable component *by A***E on October 14, 2025* Great fit for my truck, easy to install, and turned my check engine light off since installing. ### ⭐⭐⭐⭐⭐ Highly recommend *by W***S on October 10, 2025* Perfect fit, resolved the issue. Very pleased with this purchase. ### ⭐⭐⭐⭐⭐ Good product *by A***R on June 7, 2025* Been working great for a few months now. ## Frequently Bought Together - Denso 234-4018 Oxygen Sensor for GM Downstream with 4-Wire Female Plug - Denso 234-4012 Oxygen Sensor, Original Version - Offset Oxygen Sensor Socket, 3/8-Inch Drive, 7/8-Inch (22mm), Wire Gate Accesses Sensor from Side, Preventing Damage to Wires, Universal for Most Cars --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.is/products/7701833-denso-oxygen-o2-sensor-234-4018-fits-select-models-years](https://www.desertcart.is/products/7701833-denso-oxygen-o2-sensor-234-4018-fits-select-models-years) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-05-18*