---
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: "¥38897"
currency: JPY
in_stock: true
reviews_count: 13
category: "Denso"
url: https://www.desertcart.jp/products/9469853-denso-air-fuel-ratio-sensor-234-9051-fits-select-years
store_origin: JP
region: Japan
---

# Fast 4-wire response Wide 12:1-19:1 AFR range 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:** ¥38897
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your ride’s brain with precision sensing power!

## 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?** ¥38897 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/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

- • **Extended Durability:** Tarnish-proof platinum electrodes resist wear and corrosion, guaranteeing long-lasting accuracy and reliability.
- • **Precision OE Fit & Finish:** Engineered for exact replacement, ensuring hassle-free installation and perfect compatibility with select Toyota & Lexus models.
- • **Plug-and-Play Installation:** Comes with an 8.66-inch 4-wire harness and pre-coated threads for a smooth, worry-free swap that gets you back on the road faster.
- • **Rapid Air/Fuel Ratio Detection:** Advanced planar zirconia sensor delivers lightning-fast oxygen concentration readings to optimize engine performance in real-time.
- • **Fuel Efficiency & Emissions Optimizer:** Maintains ideal air/fuel mix to reduce fuel consumption and harmful emissions, helping you drive greener and smarter.

## Overview

The Denso 234-9051 Air/Fuel Ratio Sensor is a premium OEM-quality replacement part designed for select Toyota and Lexus vehicles (2005-2013). Featuring a fast-response planar zirconia element 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. With a direct-fit design and included 4-wire harness, it ensures easy installation and long-lasting reliability.

## 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 | #57,549 in Automotive ( See Top 100 in Automotive ) #114 in Automotive Replacement Oxygen Sensors |
| Brand | Denso |
| Customer Reviews | 4.2 4.2 out of 5 stars (518) |
| Date First Available | January 2, 2007 |
| Exterior | Machined |
| Global Trade Identification Number | 00042511112889 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4 ounces |
| Item dimensions L x W x H | 5.75 x 2.19 x 1.88 inches |
| Item model number | 234-9051 |
| Manufacturer | Denso |
| Manufacturer Part Number | 234-9051 |
| Material | Stainless Steel, Zirconium |
| Maximum Supply Voltage | 12 Volts (DC) |
| Measuring Range | 0.9 - 1.1 |
| Model | Oxygen Sensor |
| Mounting Type | Flange Mount |
| OEM Part Number | 15-988 Bosch, 89467-0C010 Toyota/Lexus, NAPA 234-9051 |
| Output Type | electrical |
| Product Dimensions | 5.75 x 2.19 x 1.88 inches |
| Specific Uses For Product | Replacement Air/Fuel Ratio Sensor |
| Style | Replacement Part |
| UPC | 042511112889 |
| Upper Temperature Rating | 600 Degrees Celsius |

## 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

### ⭐ Your vehicle listing is incorrect. Two attempts using Denso Manuf. approved fit is a mistake!
*by M***R on August 1, 2022*

Denso quality is very important as this sensor determines and sets the correct fuel mixture , Your records will indicate that two attempts have proven that your catalog listing is in error. One of the two sensors promised for next day delivery proved never delivered. Your customer surface agent placed a second replacement order that proved faulty and will not function when installed. ( not easily accomplished ). Manufacturer Denso indicates correct part number is 234-9051. Judging from negative feed back from numerous other customers your catalog listing is the source of the problem. Cancel promised delivery of Denso 234-4138 . Please ship Denso listed application #234-9051 sensor. Regards, Mike Maher, master certified ASE technician. licensed automotive instructor. Return shipping permit and credit needed.

## 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 Japan*
*Store origin: JP*
*Last updated: 2026-02-18*