---
product_id: 9469853
title: "Air/Fuel Ratio Sensor - 234-9051 (Fits Select Years of Toyota: 4Runner/FJ Cruiser/Land Cruiser/Sequoia/Tacoma/Tundra and Lexus GS300/GS350/GS450h/GX470/IS250/IS350/LS460/LS600h/LX470 Vehicles)"
brand: "denso"
price: "€ 242.78"
currency: EUR
in_stock: true
reviews_count: 7
url: https://www.desertcart.fi/products/9469853-air-fuel-ratio-sensor-234-9051-fits-select-years-toyota
store_origin: FI
region: Finland
---

# Fast 4-wire response Wide-band 12:1-19:1 range Tarnish-proof platinum electrodes Air/Fuel Ratio Sensor - 234-9051 (Fits Select Years of Toyota: 4Runner/FJ Cruiser/Land Cruiser/Sequoia/Tacoma/Tundra and Lexus GS300/GS350/GS450h/GX470/IS250/IS350/LS460/LS600h/LX470 Vehicles)

**Brand:** denso
**Price:** € 242.78
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your ride’s brain with precision sensing — because your engine deserves the best!

## Quick Answers

- **What is this?** Air/Fuel Ratio Sensor - 234-9051 (Fits Select Years of Toyota: 4Runner/FJ Cruiser/Land Cruiser/Sequoia/Tacoma/Tundra and Lexus GS300/GS350/GS450h/GX470/IS250/IS350/LS460/LS600h/LX470 Vehicles) by denso
- **How much does it cost?** € 242.78 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/9469853-air-fuel-ratio-sensor-234-9051-fits-select-years-toyota)

## 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

- • **Precision OE Fit:** Engineered for exact replacement in select Toyota & Lexus models, ensuring hassle-free installation and peak performance.
- • **Plug & Play Harness:** Includes 8.66-inch 4-wire wiring harness for seamless integration with your vehicle’s existing system.
- • **Rapid Oxygen Detection:** Quick-response planar zirconia element delivers real-time air/fuel ratio data for optimized engine tuning.
- • **Fuel Efficiency Booster:** Maintains ideal air/fuel mix to reduce consumption and extend catalytic converter life—save money and the planet.
- • **Durability Meets Performance:** Tarnish-proof platinum electrodes guarantee longer sensor life and consistent accuracy under extreme conditions.

## Overview

The Denso 234-9051 Air/Fuel Ratio Sensor is a high-precision replacement part designed for select Toyota and Lexus vehicles (2005-2013). Featuring a fast 4-wire planar zirconia sensor and tarnish-proof platinum electrodes, it accurately measures air/fuel ratios from 12:1 to 19:1 to optimize engine performance, fuel efficiency, and emissions. This sensor ensures a perfect OE fit with an included wiring harness, delivering reliable, long-lasting operation under extreme temperatures up to 600°C.

## Description

Denso part number 234-9051 is a replacement air/fuel ratio sensor for 2005-2009 Toyota 4Runner, 2007 Toyota FJ Cruiser, 2005-2007 Toyota Land Cruiser, 2005-2007 Toyota Sequoia, 2005-2006 Toyota Tacoma, 2005-2007 Toyota Tundra, 2006 Lexus GS300, 2007-2008 Lexus GS350, 2007-2011 Lexus GS450h, 2005-2009 Lexus GX470, 2006-2008 Lexus IS250, 2006-2008 Lexus IS350, 2009-2013 Lexus LS460, 2008-2012 Lexus LS600h, and 2005-2007 Lexus LX470 vehicles.Denso Air/Fuel Ratio 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. The superior design of Denso Air/Fuel Ratio Sensors maximizes engine performance and fuel efficiency while reducing fuel consumption and harmful emissions. Denso Air/Fuel Ratio Sensors increase performance by mapping air/fuel ratios throughout the RPM range. They also reduce emissions by keeping the air-fuel mixture at an optimum ratio. Optimal air/fuel ratios reduce fuel consumption and maximize catalytic converter life. Denso gives you the right part and the right fit, the first time.

## Features

- Denso wide-band Air/Fuel Ratio Sensor with 4 wire 8.66 inch long wiring harness
- Part Number: 234-9051
- Application: Toyota: (2005-2009 4Runner, 2007 FJ Cruiser, 2005-2007 Land Cruiser, 2005-2007 Sequoia, 2005-2006 Tacoma, 2005-2007 Tundra) / Lexus: (2006 GS300, 2007-2008 GS350, 2007-2011 GS450h, 2005-2009 GX470, 2006-2008 IS250, 2006-2008 IS350, 2009-2013 LS460, 2008-2012 LS600h, 2005-2007 LX470)
- Parts Interchange: 894670C010, 8946750030, 8946750040, 8946771020, 8946704020, 8946760020, 8946730010
- Tarnish-proof platinum electrodes provides longer life and maintains accuracy
- Quick-response planar zirconia element can quickly detect oxygen concentration
- Measures Air/Fuel ratios from approximately 12:1 to 19:1
- Package Quantity: 1
- Item Dimensions: 5.75 x 2.19 x 1.88 Inches
- Item Weight: 0.25 Pounds

## Images

![Air/Fuel Ratio Sensor - 234-9051 (Fits Select Years of Toyota: 4Runner/FJ Cruiser/Land Cruiser/Sequoia/Tacoma/Tundra and Lexus GS300/GS350/GS450h/GX470/IS250/IS350/LS460/LS600h/LX470 Vehicles) - Image 1](https://m.media-amazon.com/images/I/71h6HzYy4HL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Looks to be legitimate Denso OEM AFR Sensor, great price, perfect fit...
*by B***. on March 9, 2022*

Not a whole lot to say as this looks like it is a legitimate Denso (OEM supplier) sensor. Based on the part number, this should have been a direct replacement for the sensor that had gone bad in my car, and it was.It was a little difficult taking the old one out due to the very limited space in the engine bay, but the install was relatively easy. Just be very careful not to touch the probe end or to bang it on anything, and be VERY careful not to cross-thread it.I was happy that it shipped with a plastic thread protector and the threads were pre-coated with anti-seize (a good thing, because I forgot to buy some beforehand, and once I took the old one out it was a little to late to run to the auto parts store and buy it).Overall, the replacement stopped the ECU from throwing the codes and causing the CEL. It also looks to be good OEM-like quality. I've put 500-600 miles on since the replacement and haven't had any issues. Let's hope this one lasts 14 years and 110,000 miles like the first one.

### ⭐⭐⭐⭐⭐ O2 sensors are critical for the ECU to get the fuel/air ratio correct for the best combustion.
*by O***E on November 4, 2021*

I couldn't replace these myself, but when I took them to my mechanic he asked if they had connectors. He was pleased that he didn't have to do any wire splicing along with the chore of getting the old sensors out. Now I wasn't getting any engine codes from my old sensors, but they had over 500K miles on them so I figured it couldn't hurt to change them. Not only was I right in my assumption, I was shocked at the performance gain. I was afraid the engine was running rich, but it was actually running lean. And I didn't lose any MPG with the power gain, and it's still at the EPA rating for that vehicle. But it runs like a new truck again.

### ⭐⭐⭐⭐⭐ Sensor quality
*by R***S on May 6, 2025*

Superior product

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-02*