---
product_id: 9469853
title: "Denso 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: "€ 241.36"
currency: EUR
in_stock: true
reviews_count: 13
category: "Denso"
url: https://www.desertcart.hr/products/9469853-denso-air-fuel-ratio-sensor-234-9051-fits-select-years
store_origin: HR
region: Croatia
---

# Fast-response planar zirconia sensor 8.66-inch 4-wire harness Tarnish-proof platinum electrodes Denso 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:** € 241.36
**Availability:** ✅ In Stock

## Summary

> 🚗 Tune in to peak performance — don’t let your ride run on guesswork!

## Quick Answers

- **What is this?** Denso 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?** € 241.36 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/9469853-denso-air-fuel-ratio-sensor-234-9051-fits-select-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

- • **Wide Compatibility Range:** Fits select Toyota & Lexus models (2005-2013), making it the go-to sensor for premium reliability.
- • **Precision OE Fit & Finish:** Engineered for exact replacement, ensuring seamless first-time installation and peak performance.
- • **Durability Meets Efficiency:** Tarnish-proof platinum electrodes extend sensor life while maintaining consistent accuracy.
- • **Rapid Air/Fuel Ratio Detection:** Advanced planar zirconia element delivers lightning-fast oxygen sensing for optimized engine tuning.
- • **Fuel Economy & Emissions Optimized:** Keeps your engine running lean and clean, reducing fuel consumption and harmful emissions.

## Overview

The Denso 234-9051 Air/Fuel Ratio Sensor is a high-precision, OE-standard replacement part designed for select Toyota and Lexus vehicles (2005-2013). Featuring a fast-response planar zirconia element and tarnish-proof platinum electrodes, it ensures accurate air/fuel mixture readings to maximize engine efficiency, reduce emissions, and extend catalytic converter life. With an 8.66-inch 4-wire harness and flange mount, it guarantees a perfect fit and hassle-free installation, backed by Denso’s trusted quality and durability.

## 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.

Review: Looks to be legitimate Denso OEM AFR Sensor, great price, perfect fit... - 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.
Review: Works like OEM - Perfect fit for 2008 GX470

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0018JUJ9O |
| Best Sellers Rank | #129,103 in Automotive ( See Top 100 in Automotive ) #359 in Automotive Replacement Oxygen Sensors |
| Brand | Denso |
| Brand Name | Denso |
| Customer Reviews | 4.3 out of 5 stars 528 Reviews |
| Global Trade Identification Number | 00042511112889 |
| Included Components | Air/Fuel Ratio Sensor |
| Item Dimensions | 5.75 x 2.19 x 1.88 inches |
| Item Type Name | Oxygen Sensor |
| Item Weight | 4 ounces |
| 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 |
| Maximum Supply Voltage | 12 Volts (DC) |
| Measuring Range | 0.9 - 1.1 |
| Model | 234-9051 |
| Mounting Type | Flange Mount |
| Output Type | electrical |
| Part Number | 234-9051 |
| Specific Uses For Product | Replacement Air/Fuel Ratio Sensor |
| Style | Replacement Part |
| Style Name | Replacement Part |
| UPC | 042511112889 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 600 Degrees Celsius |
| Warranty Description | Includes manufacturer provided warranty |

## 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 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)
![Denso 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 2](https://m.media-amazon.com/images/I/51DMNcCYOsL.jpg)
![Denso 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 3](https://m.media-amazon.com/images/I/51Gs+mLvdWL.jpg)
![Denso 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 4](https://m.media-amazon.com/images/I/41wHSKrZZvL.jpg)
![Denso 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 5](https://m.media-amazon.com/images/I/412FcijsV1L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Looks to be legitimate Denso OEM AFR Sensor, great price, perfect fit...
*by C***P 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.

### ⭐⭐⭐⭐⭐ Works like OEM
*by T***M on December 1, 2025*

Perfect fit for 2008 GX470

### ⭐⭐⭐⭐⭐ 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.

## Frequently Bought Together

- Denso 234-9051 Right-Bank Upstream with 4-Wire 8.5” Option Air Fuel Ratio Oxygen Sensor
- Denso 234-4261 Oxygen Sensor with 4-Wire 10” Harness for Lexus/Toyota V-6 Downstream Left/Front

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-14*