---
product_id: 1667726
title: "234-9002 Air Fuel Ratio Sensor"
brand: "denso"
price: "120386 Ft"
currency: HUF
in_stock: true
reviews_count: 9
category: "Denso"
url: https://www.desertcart.hu/products/1667726-234-9002-air-fuel-ratio-sensor
store_origin: HU
region: Hungary
---

# 5V max supply voltage Highly accurate measurement Withstands up to 1200°C 234-9002 Air Fuel Ratio Sensor

**Brand:** denso
**Price:** 120386 Ft
**Availability:** ✅ In Stock

## Summary

> 🔥 Tune your ride like a pro — precision meets power!

## Quick Answers

- **What is this?** 234-9002 Air Fuel Ratio Sensor by denso
- **How much does it cost?** 120386 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/1667726-234-9002-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

- • **OEM-Grade Reliability:** Trusted by Toyota, backed by Denso’s strict quality standards
- • **Durable Zirconium Build:** Engineered to endure extreme heat and harsh conditions
- • **Fuel Efficiency Booster:** Optimizes combustion to reduce fuel consumption and emissions
- • **Precision Engine Tuning:** Maps air/fuel ratios across RPM for peak performance
- • **Plug & Play Installation:** Exact OE fit for hassle-free, 15-minute DIY swap

## Overview

The Denso 234-9002 Air Fuel Ratio Sensor is a high-precision, OE-quality replacement part designed for 1999-2004 Toyota 4Runner and Tacoma models. Built with durable zirconium and stainless steel, it delivers accurate air/fuel ratio readings across a wide range (10:1 to 18:1) while withstanding temperatures up to 1200°C. This sensor ensures optimal engine performance, improved fuel efficiency, and reduced emissions, all in a straightforward, bolt-on installation that saves time and costly shop fees.

## Description

Denso part number 234-9002 is a replacement air/fuel ratio sensor for 1999-2002 Toyota 4Runner and 2000-2004 Toyota Tacoma 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: Its expensive but it works like OEM...and should since Denso is the OEM-supplier - Working on a stubborn check engine light issue. The error code indicated a bad heater circuit on the Air/Fuel ratio sensor (Bank 1, sensor 1) on a 2002 4Runner (3.4L V6). Checked the heater circuit and it was reading approx 20 ohms resistance. Without a reference I was calling it good (was an open circuit) but an online video cited the spec at 1.3-1.6 ohms on a good heater circuit (the two black wires). Bit the bullet after shopping around. A couple sellers have a '10 yr warranty' but they are hard to work with. Installed easily (two bolt installation before the catalyst under the pass side floor.). I did check the heater circuit resistance by poking two small holes in the plastic bag. 1.4 ohms. Viola' !!!! Cleared the code and the short term and long term fuel trims came back into spec. Nice part and it works. Given the cost, be sure to verify its needed. A local shop wants over $150 for 'diagnostics' (a license to steal!) They just check the codes and pronounce "You need a new Air / Fuel ratio sensor!" and want to charge you $350-500 to install one. Buy this quality part and do it yourself in 15 minutes. Then take your better half out for dinner with the savings!
Review: Original product - Original product perfectly match the factory sensor work good and fixed the issue on my 2002 4runner

## Features

- Efficient Fuel Consumption.Material:Zirconium
- Highly accurate
- Easy installation
- Constructed from durable material

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000C5YCYS |
| Best Sellers Rank | #158,802 in Automotive ( See Top 100 in Automotive ) #580 in Automotive Replacement Oxygen Sensors |
| Brand | Denso |
| Customer Reviews | 4.6 4.6 out of 5 stars (729) |
| Date First Available | January 2, 2007 |
| Exterior | Machined |
| Global Trade Identification Number | 00042511110373 |
| 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 | 234-9002 |
| Manufacturer | Denso |
| Manufacturer Part Number | 234-9002 |
| Material | Stainless Steel, Zirconium |
| Maximum Supply Voltage | 5 Volts |
| Measurement Accuracy | Highly Accurate |
| Measuring Range | 10:1 - 18:1 |
| Model | Fuel Sensor |
| Mounting Type | Flange Mount |
| OEM Part Number | 234-9002 |
| Output Type | Digital |
| Product Dimensions | 5.75 x 2.19 x 1.88 inches |
| Specific Uses For Product | Replacement Air/Fuel Ratio Sensor |
| Style | Replacement Part |
| UPC | 042511110373 |
| Upper Temperature Rating | 1200 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

![234-9002 Air Fuel Ratio Sensor - Image 1](https://m.media-amazon.com/images/I/51Uxcw3kqfL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Its expensive but it works like OEM...and should since Denso is the OEM-supplier
*by T***2 on August 21, 2024*

Working on a stubborn check engine light issue. The error code indicated a bad heater circuit on the Air/Fuel ratio sensor (Bank 1, sensor 1) on a 2002 4Runner (3.4L V6). Checked the heater circuit and it was reading approx 20 ohms resistance. Without a reference I was calling it good (was an open circuit) but an online video cited the spec at 1.3-1.6 ohms on a good heater circuit (the two black wires). Bit the bullet after shopping around. A couple sellers have a '10 yr warranty' but they are hard to work with. Installed easily (two bolt installation before the catalyst under the pass side floor.). I did check the heater circuit resistance by poking two small holes in the plastic bag. 1.4 ohms. Viola' !!!! Cleared the code and the short term and long term fuel trims came back into spec. Nice part and it works. Given the cost, be sure to verify its needed. A local shop wants over $150 for 'diagnostics' (a license to steal!) They just check the codes and pronounce "You need a new Air / Fuel ratio sensor!" and want to charge you $350-500 to install one. Buy this quality part and do it yourself in 15 minutes. Then take your better half out for dinner with the savings!

### ⭐⭐⭐⭐⭐ Original product
*by G***N on January 16, 2026*

Original product perfectly match the factory sensor work good and fixed the issue on my 2002 4runner

### ⭐⭐⭐⭐⭐ AMAZINGLY EASY TO INSTALL
*by M***F on December 18, 2014*

When my check engine light recently came on in my 2002 Toyota 4Runner Sport Edition, it was the first time. I had just gone over the 110k mark. My 4runner has been the most reliable vehicle I have ever owned. I just make sure to do all the scheduled maintenance. I did some research online, and some blogs recommended taking the gas cap off and putting it back on, then unhooking the battery and letting it sit for 10 minutes. I did this and the check engine light went off. It stayed off for about 5 days, but then it came back on. I tried it one more time, and it went off but came back on 10 minutes later. I then decided to take other action. Since my registration was due soon and I had to get a smog check, I decided to buy an auto code reader (on Amazon) for about $15. This was a great purchase, I highly recommend that everyone get one. The code reader pulled P1135, and after more internet research, I found the Denso 234-9002 Air Fuel Ratio Sensor on Amazon. Thanks to all of the other great reviews written about this product, I decided to pull the trigger and do this job myself. I just don't trust auto dealerships at all. I do trust my mechanic but this seemed like an easy enough fix and no special tools were needed. All it took was a combo 12mm/10mm wrench (got it on Amazon) and a small flathead screwdriver to release the wire harness. The 10mm side of the wrench was to take off the bracket that holds the wire harness up. It might be tough to unplug the wire harness without removing the bracket. The 12mm side of the wrench removes the 2 nuts that secure the sensor in place. The sensor even came with a new gasket, so I didn't have to worry about that. The whole job took less than 15 minutes, and I didn't even have to jack up my 4runner. Just slid under it, located the part, and done! After the install, I used the code reader to clear the codes from my 4runner. I then drove about 15 miles, and then tested it again. No codes came up! The next test was the smog check, which I passed easily. I have now driven about 600 miles since installation, and so far so good. I highly recommend buying this part from Amazon, you will save yourself some bucks!

## Frequently Bought Together

- Denso 234-9002 Air Fuel Ratio Sensor
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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-19*