---
product_id: 453117066
title: "Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9042 Compatible with Toyota Camry Sienna Solara Highlander Lexus RX350 RX400h ES330 ES300 Replacement 89467-06040 89467-0E030"
brand: "marsflex"
price: "€ 65.39"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fi/products/453117066-marsflex-air-fuel-ratio-o2-oxygen-sensor-upstream-234-9042
store_origin: FI
region: Finland
---

# 12V max supply voltage 930°C max temperature rating 18s fast response time Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9042 Compatible with Toyota Camry Sienna Solara Highlander Lexus RX350 RX400h ES330 ES300 Replacement 89467-06040 89467-0E030

**Brand:** marsflex
**Price:** € 65.39
**Availability:** ✅ In Stock

## Summary

> 🚗 Upgrade your ride’s brain with Marsflex precision – because every mile counts!

## Quick Answers

- **What is this?** Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9042 Compatible with Toyota Camry Sienna Solara Highlander Lexus RX350 RX400h ES330 ES300 Replacement 89467-06040 89467-0E030 by marsflex
- **How much does it cost?** € 65.39 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/453117066-marsflex-air-fuel-ratio-o2-oxygen-sensor-upstream-234-9042)

## Best For

- marsflex enthusiasts

## Why This Product

- Trusted marsflex brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Fit:** OE-spec design ensures seamless installation on select Toyota & Lexus models.
- • **Fuel Economy Booster:** Improves catalytic converter life and reduces fuel consumption for smarter driving.
- • **Durability That Lasts:** Built with high-quality materials to withstand extreme temperatures up to 930°C.
- • **Precision Engine Tuning:** Optimized oxygen sensing for peak fuel efficiency and engine performance.
- • **Reliable Quality Assurance:** Backed by a 1-year warranty and rigorous factory testing for peace of mind.

## Overview

The Marsflex Air Fuel Ratio O2 Oxygen Sensor (model 234-9042) is a high-quality upstream sensor compatible with various Toyota and Lexus models from 2002 to 2011. Engineered to meet or exceed OE specifications, it delivers accurate oxygen level readings with an 18-second response time, operates reliably in extreme temperatures up to 930°C, and supports improved engine performance and fuel economy. Easy to install with a flange mount design, it comes with a 1-year warranty ensuring durability and reliability.

## Description

Full description not available

## Features

- Cautions: Please check your vehicle fitment carefully in the product description to avoid any wrong purchase. Please check your part pictures with our pictures, especially the plug, it must be completely same. Or it will not fit your car
- Application: Marsflex Oxygen Sensor 234-9042 fit for Toyota 2004-2007 Highlander Base/Limited 2006-2007 Highlander Hybrid/Hybrid Limited/Sport 2002-2006 Camry LE/XLE 2002-2003 Camry SE 2004-2006 Camry SE 2004-2006 Sienna CE/LE 2006 Sienna XLE Limited 2004-2005 Sienna XLE Limited 2004-2006 Sienna XLE 2004-2008 Solara SE/SLE 2007-2008 Solara Sport 2006 Solara SE Sport LExis 2010-2011 RX350 Base 2007 RX350 Base 2004-2006 RX330 Base 2006-2008 RX440h Base 2004-2006 ES330 Base 2002-2003 ES330 Base
- Advantage: Made of high-quality materials, strong durability, to ensure service life, Marsflex O2 Sensor can improve engine performance and fuel economy,extend Catalytic Converter life
- Easy Installation: Total length 14.3 inch. Manufactured to OE specification fit form and function, durable and easy installation
- Warranty: 1-YEAR WARRANTY. ALL Marsflex oxygen sensors are extensively tested during manufacturing to guarantee quality, reliability, and above all, always meet or exceed the original equipment specifications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Marsflex |
| Item dimensions L x W x H | 5.91 x 2.17 x 2.17 inches |
| Material | 234-9042 |
| Item Weight | 4 Ounces |
| Style | Upstream |
| Current Rating | 6 Amps |
| Lower Temperature Rating | 150 Degrees Celsius |
| Maximum Supply Voltage | 12 Volts |
| Measurement Accuracy | Go & No-go Gauge |
| Measuring Range | λ=0.6- ∞ |
| Mounting Type | Flange Mount |
| Output Type | electrical signal |
| Response Time | 18 seconds |
| Sensing Distance | 1000 Millimeters |
| Specific Uses For Product | Oxygen Sensor |
| Upper Temperature Rating | 930 Degrees Celsius |
| Manufacturer | Marsmotor |
| Item Weight | 4 ounces |
| Product Dimensions | 5.91 x 2.17 x 2.17 inches |
| Item model number | APEL14055 |
| Manufacturer Part Number | APEL14055 |
| Wattage | 15 watts |

## Product Details

- **Brand:** Marsflex
- **Item dimensions L x W x H:** 5.91 x 2.17 x 2.17 inches
- **Material:** 234-9042
- **Item Weight:** 4 Ounces
- **Style:** Upstream

## Images

![Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9042 Compatible with Toyota Camry Sienna Solara Highlander Lexus RX350 RX400h ES330 ES300 Replacement 89467-06040 89467-0E030 - Image 1](https://m.media-amazon.com/images/I/615QemlUA1L.jpg)
![Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9042 Compatible with Toyota Camry Sienna Solara Highlander Lexus RX350 RX400h ES330 ES300 Replacement 89467-06040 89467-0E030 - Image 2](https://m.media-amazon.com/images/I/61F3eLB8gFL.jpg)
![Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9042 Compatible with Toyota Camry Sienna Solara Highlander Lexus RX350 RX400h ES330 ES300 Replacement 89467-06040 89467-0E030 - Image 3](https://m.media-amazon.com/images/I/61j-eIJlkoL.jpg)
![Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9042 Compatible with Toyota Camry Sienna Solara Highlander Lexus RX350 RX400h ES330 ES300 Replacement 89467-06040 89467-0E030 - Image 4](https://m.media-amazon.com/images/I/61mX1yg-+FL.jpg)
![Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9042 Compatible with Toyota Camry Sienna Solara Highlander Lexus RX350 RX400h ES330 ES300 Replacement 89467-06040 89467-0E030 - Image 5](https://m.media-amazon.com/images/I/614YZDcLRgL.jpg)

## Questions & Answers

**Q: What is the life expectancy of an oxygen sensor?**
A: Heated oxygen sensors should be checked or replaced every 60,000 miles, while unheated oxygen sensors should be checked or replaced every 30,000 miles

**Q: Do I need to replace all of the sensors at once?**
A: It is best to replace O2 sensors in pairs. Because, replacing one sensor will cause the ECU to set a code for the other sensors. This is because the new sensor switching activity is much faster than that of the older aged sensors

**Q: The oxygen sensor will not come out.**
A: If you are using an open end wrench, try an O2 socket. If this fails, try a long ratchet or breaker bar in conjunction with your socket to generate more torque. After the sensor is removed, be sure to use a thread cleaner to clean up the bung threads

**Q: Why does the fault code still exist after replacing the oxygen sensor?**
A: 1 Oxygen sensor circuit failure

**Q: Will this oxygen sensor work with my vehicle?**
A: Marsflex oxygen sensor is consistent with OEM, please refer to the page information for compatibility information. You can check 'Amazon confirmed it' for confirmation, or provide us with your vehicle information and we will confirm it for you.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It was easy to install and bank 2
*by A***L on July 8, 2025*

It worked as advertised

### ⭐⭐⭐⭐⭐ Approved brand , bought twice for different cars worked great
*by M***E on July 2, 2025*

Great quality sensor

### ⭐⭐⭐⭐⭐ Fixed the issue!
*by C***. on May 13, 2025*

Got it installed and seems to have corrected the issue

## Frequently Bought Together

- Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9042 Compatible with Toyota Camry Sienna Solara Highlander Lexus RX350 RX400h ES330 ES300 Replacement 89467-06040 89467-0E030
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- Offset Oxygen Sensor Socket, 3/8-Inch Drive, 7/8-Inch (22mm), Wire Gate Accesses Sensor from Side, Preventing Damage to Wires, Universal for Most Cars

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-23*