--- product_id: 51500209 title: "Walker Products 350-34581 Oxygen Sensor 4-W Direct Fit Narrow-Band" brand: "walker products" price: "$99.92" currency: USD in_stock: true category: "Walker Products" url: https://www.desertcart.ec/products/51500209-walker-products-350-34581-oxygen-sensor-4-w-direct-fit store_origin: EC region: Ecuador --- # Boosts fuel economy Optimizes combustion efficiency ±1% measurement accuracy Walker Products 350-34581 Oxygen Sensor 4-W Direct Fit Narrow-Band **Brand:** walker products **Price:** $99.92 **Availability:** ✅ In Stock ## Summary > ⚡ Drive smarter, save fuel, and stay ahead with Walker’s precision oxygen sensor! ## Quick Answers - **What is this?** Walker Products 350-34581 Oxygen Sensor 4-W Direct Fit Narrow-Band by walker products - **How much does it cost?** $99.92 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/51500209-walker-products-350-34581-oxygen-sensor-4-w-direct-fit) ## Best For - walker products enthusiasts ## Why This Product - Trusted walker products brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure:** Ceramic core with platinum-coated electrodes and protective coatings for long-lasting reliability. - • **Fuel-Savvy Innovation:** Smart oxygen sensing that maximizes fuel efficiency and slashes operating costs. - • **Plug & Play Confidence:** Direct fit design ensures hassle-free installation and guaranteed vehicle compatibility. - • **Precision Engine Tuning:** Achieve optimal air-fuel ratio with ±1% sensor accuracy for peak engine performance. - • **Trusted by Pros Nationwide:** Industry-approved, USA-engineered sensor delivering consistent, corrosion-resistant performance. ## Overview The Walker Products 350-34581 Oxygen Sensor is a premium OE replacement part engineered in the USA with ±1% accuracy. Featuring a ceramic element and platinum-coated electrodes, it precisely monitors exhaust oxygen to optimize combustion and fuel economy. Its direct-fit design ensures easy installation and reliable, long-lasting performance protected against contamination and wear. Approved by professional technicians, it supports a wide range of North American vehicles, making it the go-to sensor for enhanced engine efficiency and durability. ## Description Introducing the cutting-edge oxygen sensor from Walker Products - the most intelligent and comprehensive Oxygen (O2) Sensor program in the industry. Our oxygen sensors are designed to fit all makes, models, and customers, providing reliable and optimal performance for your vehicle. Featuring a dual lower shield design, ceramic element, laser-welded body and shield, high-temperature sleeving, and plasma-sprayed protective coating, our oxygen sensors are built to last. Additionally, our O2 Bungs and Kits are available for repairing damaged or seized threads, providing a complete solution to all your vehicle needs. Our oxygen sensors are engineered, assembled, and 100% performance tested in the USA, ensuring exact fit, form, and function. They are also corrosion-resistant and easy to install, making them the ideal choice for any vehicle. With industry-proven performance approved by professional technicians nationwide, our oxygen sensor offers the highest coverage of all North American vehicle applications, including wideband and air fuel ratio applications. So, why settle for anything less? Choose the oxygen sensor with industry-proven performance that is approved by professional technicians nationwide and experience the best possible performance for your vehicle. Choose Walker Products. ## Features - Package Contents: One (1) Unit - Walker Products 350-34581 Oxygen Sensor 4-W Direct Fit Narrow-Band; See desertcart Confirmed Fit to verify vehicle compatibility - Enhances Combustion Efficiency: Accurately determines oxygen content in exhaust gases to maintain the ideal air-fuel ratio for optimal engine performance - Improves Fuel Economy: Measures oxygen levels to optimize the air-fuel mixture, helping increase fuel efficiency and reduce operating costs - Delivers Reliable Sensing Performance: Features gas-permeable platinum-coated electrodes for precise, consistent, and long-lasting operation - Protects Against Contamination & Wear: Specialized coating helps prevent electrode erosion and contamination caused by combustion residue and exhaust particulates, extending sensor life ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01IAFU1UU | | Best Sellers Rank | #304,265 in Automotive ( See Top 100 in Automotive ) #1,232 in Automotive Replacement Oxygen Sensors | | Brand | Walker Products | | Brand Name | Walker Products | | Customer Reviews | 4.2 out of 5 stars 257 Reviews | | Global Trade Identification Number | 00724620093937 | | Included Components | Oxygen Sensor | | Item Dimensions | 5.75 x 1.85 x 2.13 inches | | Item Highlight | Premium OE replacement sensor provides oxygen feedback to the engine control system for reliable performance and efficiency. | | Item Type Name | Oxygen Sensor | | Item Weight | 3.36 ounces | | Item dimensions L x W x H | 5.75 x 1.85 x 2.13 inches | | Manufacturer | Walker Products | | Material | Ceramic | | Material Type | Ceramic | | Measurement Accuracy | ±1% | | Model | Walker 350-34581 | | Mounting Type | Flange Mount | | Number of Items | 1 | | Number of Packs | 1 | | Output Type | electrical signal | | Part Number | 350-34581 | | Specific Uses For Product | Oxygen Sensor | | Style | Oxygen Sensor | | Style Name | Oxygen Sensor | | UPC | 724620093937 | | Unit Count | 1 Count | | Warranty Description | 90 Day Warranty | ## Product Details - **Brand:** Walker Products - **Item Weight:** 3.36 ounces - **Item dimensions L x W x H:** 5.75 x 1.85 x 2.13 inches - **Material:** Ceramic - **Style:** O2 Sensor ## Images ![Walker Products 350-34581 Oxygen Sensor 4-W Direct Fit Narrow-Band - Image 1](https://m.media-amazon.com/images/I/61OL4dj1BjL.jpg) ![Walker Products 350-34581 Oxygen Sensor 4-W Direct Fit Narrow-Band - Image 2](https://m.media-amazon.com/images/I/61KFbMxIbqL.jpg) ![Walker Products 350-34581 Oxygen Sensor 4-W Direct Fit Narrow-Band - Image 3](https://m.media-amazon.com/images/I/61DGaWO9mbL.jpg) ![Walker Products 350-34581 Oxygen Sensor 4-W Direct Fit Narrow-Band - Image 4](https://m.media-amazon.com/images/I/61-MdUP00GL.jpg) ![Walker Products 350-34581 Oxygen Sensor 4-W Direct Fit Narrow-Band - Image 5](https://m.media-amazon.com/images/I/61KG4bEtMqL.jpg) --- ## 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.ec/products/51500209-walker-products-350-34581-oxygen-sensor-4-w-direct-fit](https://www.desertcart.ec/products/51500209-walker-products-350-34581-oxygen-sensor-4-w-direct-fit) --- *Product available on Desertcart Ecuador* *Store origin: EC* *Last updated: 2026-09-21*