---
product_id: 485928043
title: "Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9040 Compatible with Honda 2003-2007 Accord EX/EX-L/LX/DX/SE L4 2.4L, Replacment 36531-RAA-A02 36531RAAA02"
brand: "marsflex"
price: "50815 Ft"
currency: HUF
in_stock: true
url: https://www.desertcart.hu/products/485928043-marsflex-air-fuel-ratio-o2-oxygen-sensor-upstream-234-9040
store_origin: HU
region: Hungary
---

# Easy Install 18s Response 930°C Max Temp Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9040 Compatible with Honda 2003-2007 Accord EX/EX-L/LX/DX/SE L4 2.4L, Replacment 36531-RAA-A02 36531RAAA02

**Brand:** marsflex
**Price:** 50815 Ft
**Availability:** ✅ In Stock

## Summary

> 🚗 Elevate Your Drive with Marsflex!

## Quick Answers

- **What is this?** Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9040 Compatible with Honda 2003-2007 Accord EX/EX-L/LX/DX/SE L4 2.4L, Replacment 36531-RAA-A02 36531RAAA02 by marsflex
- **How much does it cost?** 50815 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/485928043-marsflex-air-fuel-ratio-o2-oxygen-sensor-upstream-234-9040)

## 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

- • **1-Year Warranty:** Peace of mind with a full year of coverage on your purchase.
- • **Optimize Your Ride:** Enhance engine performance and fuel efficiency with precision.
- • **Comprehensive Testing:** Extensively tested to ensure quality and exceed original specs.
- • **Perfect Fit Guaranteed:** Manufactured to OE specifications for seamless installation.
- • **Durability Meets Design:** Crafted from high-quality materials for long-lasting reliability.

## Overview

The Marsflex Air Fuel Ratio O2 Oxygen Sensor 234-9040 is designed for Honda Accord models from 2003 to 2007, ensuring optimal engine performance and fuel economy. With a robust construction and easy installation, this sensor is a reliable choice for enhancing your vehicle's efficiency. Backed by a 1-year warranty, it promises quality and durability.

## Description

Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9040 Compatible with Honda 2003-2007 Accord EX/EX-L/LX/DX/SE L4 2.4L, Replacment 36531-RAA-A02 36531RAAA02

## 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 Air Fuel Ratio O2 Oxygen Sensor 234-9040 fit for 2003-2007 Accord EX L4 2.4L , 2007 Accord EX-L L4 2.4L, 2003-2007 Accord LX L4 2.4L, 2007 Accord Special Edition L4 2.4L, 2006-2007 Accord Value Package L4 2.4L, 2006 Accord LX Special Edition L4 2.4L, 2003-2005 Accord DX L4 2.4L, 2005 Accord SE L4 2.4L
- 🔧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 17.9 nch. 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 | 15 x 5.5 x 5.5 Centimeters |
| Material | Metal |
| Item Weight | 4.5 Ounces |
| Style | Oxygen Sensor |
| Current Rating | 6 Amps |
| Lower Temperature Rating | 150 Degrees Celsius |
| Maximum Supply Voltage | 20 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 Millimetres |
| Specific Uses For Product | Oxygen Sensor |
| Upper Temperature Rating | 930 Degrees Celsius |
| Manufacturer | Marsmotor |
| Model number | 234-9040 |
| Number of Memory Sticks | 2 |
| Item Weight | 127 g |
| Product Dimensions | 15.01 x 5.51 x 5.51 cm; 127.57 g |
| Item model number | 234-9040 |
| Item Height | 2.17 Inches |
| Item Width | 2.17 Inches |
| Wattage | 15 Watts |
| Included Components | 1. 234-9040 Oxygen Sensor 2. Oxygen Sensor Instruction Manual |
| Are batteries included? | No |

## Product Details

- **Brand:** Marsflex
- **Item dimensions L x W x H:** 15 x 5.5 x 5.5 Centimeters
- **Material:** Metal
- **Item Weight:** 4.5 Ounces
- **Style:** Oxygen Sensor

## Images

![Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9040 Compatible with Honda 2003-2007 Accord EX/EX-L/LX/DX/SE L4 2.4L, Replacment 36531-RAA-A02 36531RAAA02 - Image 1](https://m.media-amazon.com/images/I/61mfRWuSGVL.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.

## Frequently Bought Together

- Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-9040 Compatible with Honda 2003-2007 Accord EX/EX-L/LX/DX/SE L4 2.4L, Replacement 36531-RAA-A02 36531RAAA02 1Pcs
- Oxygen O2 Sensor Downstream 234-4797 for Honda Accord 2.4L 2003 2004 2005 2006 2007
- FOMIUZY High Flow Front Catalytic Converter Kit Direct-Fit Honda Accord 2003 2004 2005 2006 2007 2.4L

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-05*