---
product_id: 16041632
title: "Denso 234-9012 Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 7.09â€"
brand: "denso"
price: "$469.11"
currency: USD
in_stock: true
reviews_count: 8
url: https://www.desertcart.ec/products/16041632-denso-234-9012-air-fuel-ratio-sensor-4-wire-direct
store_origin: EC
region: Ecuador
---

# Heated 4-wire design 7.09-inch wire length Direct OE fit replacement Denso 234-9012 Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 7.09â€

**Brand:** denso
**Price:** $469.11
**Availability:** ✅ In Stock

## Summary

> 🔥 Tune your ride to perfection with Denso’s precision sensor!

## Quick Answers

- **What is this?** Denso 234-9012 Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 7.09â€ by denso
- **How much does it cost?** $469.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/16041632-denso-234-9012-air-fuel-ratio-sensor-4-wire-direct)

## 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

- • **Plug-and-Play Fit:** Exact OE replacement ensures hassle-free installation
- • **Durable Build Quality:** Stainless steel & zirconium materials for long-lasting reliability
- • **Fuel Efficiency Booster:** Reduces fuel consumption by maintaining ideal mixture
- • **Precision Engine Mapping:** Optimizes air/fuel ratio across RPM for peak performance
- • **Emission Control Champion:** Lowers harmful emissions, extending catalytic converter life

## Overview

The Denso 234-9012 Air-Fuel Ratio Sensor is a direct-fit, heated 4-wire replacement part designed for 2004-2010 Toyota Sienna models. Engineered with high-accuracy measurement and durable stainless steel and zirconium construction, it optimizes engine performance, improves fuel efficiency, and reduces emissions by maintaining the ideal air/fuel mixture throughout the RPM range.

## Description

Denso part number 234-9012 is a replacement air/fuel ratio sensor for 2004-2010 Toyota Sienna 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

- Efficient Fuel Consumption
- Package Dimensions: 4.826 L x 5.588 H x 14.986 W (centimeters)
- Package Weight: 0.15 pounds
- Country of Origin : United States
- Position:Upstream Rear:2004-2006 Toyota Sienna,Position:Upstream Right:2007-2010 Toyota Sienna

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Denso |
| Item dimensions L x W x H | 5.75 x 2.19 x 1.88 inches |
| Material | Stainless Steel, Zirconium |
| Item Weight | 0.01 Ounces |
| Style | Replacement Part |
| Maximum Supply Voltage | 12 Volts |
| Measurement Accuracy | High Accuracy |
| Measuring Range | 10 - 20 |
| Mounting Type | Thread-In |
| Output Type | Analog |
| Specific Uses For Product | Replacement Air/Fuel Ratio Sensor |
| UPC | 042511117389 |
| Global Trade Identification Number | 00042511117389 |
| Manufacturer | Denso |
| Model | Air Fuel Ratio Sensor |
| Item Weight | 0.01 ounces |
| Product Dimensions | 5.75 x 2.19 x 1.88 inches |
| Item model number | 234-9012 |
| Exterior | Machined |
| Manufacturer Part Number | 234-9012 |

## Product Details

- **Brand:** Denso
- **Item dimensions L x W x H:** 5.75 x 2.19 x 1.88 inches
- **Material:** Stainless Steel, Zirconium
- **Item Weight:** 0.01 Ounces
- **Style:** Replacement Part

## Images

![Denso 234-9012 Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 7.09â€ - Image 1](https://m.media-amazon.com/images/I/81MKuPGG93L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ sienna PO420 code fix
*by G***E on June 19, 2025*

The product is exactly what i needed after installed... fix the codes on my sienna, thanks

### ⭐⭐⭐⭐⭐ 2004 sienna awd
*by B***1 on May 26, 2024*

The media could not be loaded. UPDATE: I believe if you get a check engine light within a week or less of replacing this, you need to change your downstream sensor or replace your coils / spark plugs. This was documented on a youtube video I saw. I changed my downstream sensor and reseated my coil connectors and so far no code. My connector tabs broke off when replacing my spark plugs.I just replaced this on a 2004 awd sienna.Do this by removing y exhaust pipe from bottom. 6 bolts. After that there is plenty of roomBuy the more expensive sensor removal tool that sits near the bottom of the sensor and not the one that looks like a socket.It will pop off easily.It was a slight challenge getting my socket in there but with the right removal tool and firm pressure it comes out easily

### ⭐⭐⭐⭐⭐ received very quickly and good parts
*by A***R on November 22, 2024*

my mechanic tested the old ones before he put the new ones in and they were still working just fine so I was able to return these and get my money back but really appreciated that the mechanic said these are really good parts. Thanks.

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**Shop now:** [https://www.desertcart.ec/products/16041632-denso-234-9012-air-fuel-ratio-sensor-4-wire-direct](https://www.desertcart.ec/products/16041632-denso-234-9012-air-fuel-ratio-sensor-4-wire-direct)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-01-25*