---
product_id: 524818841
title: "Marsflex Air Fuel Ratio O2 Oxygen Sensor 234-9009 Upstream Compatible with Toyota Sienna Highlander Camry Avalon Lexus RX300 ES300, Replacement 250-54054"
price: "€ 121.19"
currency: EUR
in_stock: true
url: https://www.desertcart.com.cy/products/524818841-marsflex-air-fuel-ratio-o2-oxygen-sensor-234-9009-upstream
store_origin: CY
region: Cyprus
---

# Marsflex Air Fuel Ratio O2 Oxygen Sensor 234-9009 Upstream Compatible with Toyota Sienna Highlander Camry Avalon Lexus RX300 ES300, Replacement 250-54054

**Price:** € 121.19
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Marsflex Air Fuel Ratio O2 Oxygen Sensor 234-9009 Upstream Compatible with Toyota Sienna Highlander Camry Avalon Lexus RX300 ES300, Replacement 250-54054
- **How much does it cost?** € 121.19 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/524818841-marsflex-air-fuel-ratio-o2-oxygen-sensor-234-9009-upstream)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
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## Description

Marsflex Air Fuel Ratio O2 Oxygen Sensor 234-9009 Upstream Compatible with Toyota Sienna Highlander Camry Avalon Lexus RX300 ES300, Replacement 250-54054

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Marsflex |
| Item dimensions L x W x H | 5.91 x 2.17 x 2.17 inches |
| Material | 234-9009 |
| Item Weight | 0.13 Kilograms |
| Style | Upstream |
| Current Rating | 9 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 | Digital |
| Response Time | 20 seconds |
| Sensing Distance | 1000 Millimeters |
| Specific Uses For Product | Oxygen Sensor |
| Upper Temperature Rating | 930 Degrees Celsius |
| Manufacturer | Marsmotor |
| Item Weight | 4.6 ounces |
| Product Dimensions | 5.91 x 2.17 x 2.17 inches |
| Item model number | APEL14024 |
| Manufacturer Part Number | APEL14024 |
| Wattage | 20 watts |

## Product Details

- **Brand:** Marsflex
- **Item dimensions L x W x H:** 5.91 x 2.17 x 2.17 inches
- **Material:** 234-9009
- **Item Weight:** 0.13 Kilograms
- **Style:** Upstream

## Images

![Marsflex Air Fuel Ratio O2 Oxygen Sensor 234-9009 Upstream Compatible with Toyota Sienna Highlander Camry Avalon Lexus RX300 ES300, Replacement 250-54054 - Image 1](https://m.media-amazon.com/images/I/51TlJyMbaEL.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 234-9009 Upstream Compatible with Toyota Sienna Highlander Camry Avalon Lexus RX300 ES300, Replacement 250-54054
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- Marsflex Oxygen O2 Sensor 234-4622 13355 Downstream Heated Compatible with Toyota Camry Avalon Sienna 4Runner RAV4 Solara Matrix Lexus ES300 Pontiac Vibe,250-24360 Replacement

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**Shop now:** [https://www.desertcart.com.cy/products/524818841-marsflex-air-fuel-ratio-o2-oxygen-sensor-234-9009-upstream](https://www.desertcart.com.cy/products/524818841-marsflex-air-fuel-ratio-o2-oxygen-sensor-234-9009-upstream)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-19*