--- product_id: 173452342 title: "234-9042 Air Fuel Ratio Sensor" brand: "denso" price: "£138.16" currency: GBP in_stock: true reviews_count: 5 url: https://www.desertcart.co.uk/products/173452342-234-9042-air-fuel-ratio-sensor store_origin: GB region: United Kingdom --- # 302mm wire length 18mm thread diameter Durable corrosion-resistant build 234-9042 Air Fuel Ratio Sensor **Brand:** denso **Price:** £138.16 **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade your ride with precision that lasts – because your engine deserves the best! ## Quick Answers - **What is this?** 234-9042 Air Fuel Ratio Sensor by denso - **How much does it cost?** £138.16 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/173452342-234-9042-air-fuel-ratio-sensor) ## 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 - • **Built to Last:** Corrosion and abrasion-resistant materials guarantee longevity and reliability under harsh conditions. - • **OEM-Grade Quality:** Exact Denso OEM spec replacement trusted for 20+ years of consistent performance. - • **Plug & Play Installation:** Designed for hassle-free setup with standard 18mm thread and optimal 302mm wire length. - • **Precision Oxygen Sensing:** Zirconia solid electrolyte ensures ultra-accurate air-fuel ratio detection for peak engine performance. - • **Smart Contaminant Defense:** Porous PTFE filter blocks water and engine grime, protecting sensor integrity and accuracy. ## Overview The Denso 234-9042 Air Fuel Ratio Sensor is a high-precision automotive sensor featuring a zirconia solid electrolyte and alumina heater substrate for accurate oxygen level detection. Built with durable, corrosion-resistant materials and a protective PTFE filter, it ensures long-lasting performance and easy installation with an 18mm thread and 302mm wire length. Trusted as an OEM-quality replacement, it delivers reliable engine efficiency and emissions control. ## Description Denso Air and Fuel Ratio sensor is designed to detect the amount of the exhaust gas air and fuel ratio. It is constructed from durable material that is corrosion and abrasion resistant. This sensor features zirconia solid electrolyte integrated with alumina heater substrate which precicely controls the amount of oxygen concentration that flows into the diffusion layer to limit current flow. This sensor can easily be installed and ensures longevity.Porous PTFE filter allows atmospheric oxygen the enter the sensor without permitting water or engine contaminants to seep into the casing. Review: OEM spec Denso O2 sensor. This is an identical OEM part, so it fit perfectly and performed as it should. Yes, it is two or three time more than some copy, but it is the exact right part, not something generic and the original lasted 20+ years. Review: Funcionó perfecto ## Features - Manufactured to detect the amount of exhaust gas air fuel ratio - Constructed from durable material - Features zirconia solid electrolyte - Highly accurate - Easy installation. The thread diameter is 18mm and the wire length is 302mm ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000PWUX14 | | Brand | Denso | | Customer Reviews | 4.4 4.4 out of 5 stars (445) | | Date First Available | 18 July 2011 | | Item Weight | 111 g | | Item model number | 234-9042 | | Manufacturer | Denso | | Manufacturer part number | 234-9042 | | Product Dimensions | 14.61 x 5.56 x 4.78 cm; 111 g | ## Product Details - **Brand:** Denso - **Item dimensions L x W x H:** 14.6 x 5.6 x 4.8 centimetres - **Material:** Alumina - **Measurement accuracy:** <5% - **Style:** Modern ## Images ![234-9042 Air Fuel Ratio Sensor - Image 1](https://m.media-amazon.com/images/I/41SDX1m+OjL.jpg) ![234-9042 Air Fuel Ratio Sensor - Image 2](https://m.media-amazon.com/images/I/41m7WOJ0XzL.jpg) ![234-9042 Air Fuel Ratio Sensor - Image 3](https://m.media-amazon.com/images/I/41mlBYG8--L.jpg) ![234-9042 Air Fuel Ratio Sensor - Image 4](https://m.media-amazon.com/images/I/51OJ-qitO6L.jpg) ![234-9042 Air Fuel Ratio Sensor - Image 5](https://m.media-amazon.com/images/I/51rkofayB9L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***G on 17 February 2024* OEM spec Denso O2 sensor. This is an identical OEM part, so it fit perfectly and performed as it should. Yes, it is two or three time more than some copy, but it is the exact right part, not something generic and the original lasted 20+ years. ### ⭐⭐⭐⭐⭐ Review *by L***. on 5 August 2024* Funcionó perfecto ### ⭐⭐⭐⭐⭐ Review *by R***. on 12 August 2024* Works great so far, no check engine light. --- ## 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.co.uk/products/173452342-234-9042-air-fuel-ratio-sensor](https://www.desertcart.co.uk/products/173452342-234-9042-air-fuel-ratio-sensor) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-01*