Original Yamaha NMAX 125 Air Fuel Oxygen Sensor (2DP-H592A-20) | 2015-2020

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Designed with precision engineering, this offers unmatched performance and durability.


Rough running is often caused by incorrect air-fuel readings from a worn sensor. This original Yamaha NMAX 125 air fuel oxygen sensor (2DP-H592A-20) fixes that by providing accurate data to the ECU. It allows the system to adjust fuel delivery properly. That keeps combustion balanced. The engine runs smoother and more efficiently.

Vetted by our Lead Engineer. Leveraging 30 years of mechanical pedigree, every part is inspected for material density and exact tolerances to ensure a 'Right-First-Time' fit.

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Guaranteed fitment for Yamaha GPD125-A NMAX or free returns.

Product Compatibility

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Part Number
  • 2DP-H592A-20
Alternative Part Number

_

Model
  • GPD125-A NMAX
Year
  • 2015
  • 2016
  • 2017
  • 2018
  • 2019
  • 2020
MFG
  • Yamaha

Product Overview

This high-quality Original Air Fuel Oxygen Sensor is designed to meet or exceed factory performance standards and is suitable for Yamaha NMAX 125 (2015-2020) models.

The air fuel oxygen sensor (lambda sensor) monitors the oxygen content in the exhaust gases, continuously sending feedback to the ECU so it can fine-tune the fuel injection mixture for optimal combustion efficiency. When the sensor wears or becomes contaminated, the ECU loses the data it needs to maintain the correct air-fuel ratio, causing the engine to run rich or lean, resulting in poor fuel economy, increased emissions, rough running, and potential damage to the catalytic converter. This original replacement restores precise oxygen sensing, allowing the ECU to maintain the correct fuel mixture and restore engine efficiency on your NMAX 125.

- Brand New Original Air Fuel Oxygen Sensor
- Part Number: 2DP-H592A-20
- Original replacement for Yamaha NMAX 125 (2015-2020)
- Restores precise exhaust oxygen monitoring for accurate fuel injection management
- Helps improve fuel economy and maintain correct emissions output
- Direct fit, no modification required
- Ideal for emissions system servicing and scheduled fuel injection maintenance
- Built to withstand high exhaust temperatures
- London: Express same-day delivery (2-3 hours)
- Rest of UK: Same-day dispatch on orders before 1 PM (3-4 business days delivery).
- Up to 75% off for B2B Trade Accounts. Independent UK garages, apply now.

• Yamaha NMAX 125 owners with a faulty, failing, or contaminated oxygen sensor
• Replacing the Air Fuel Oxygen Sensor during fuel system repair or emissions fault diagnosis
• Mechanics and workshops carrying out Yamaha NMAX 125 fuel injection and emissions system servicing
• Riders wanting to restore the original fuel efficiency and emissions performance of their Yamaha NMAX 125
• Anyone looking for a guaranteed original replacement for their Yamaha NMAX 125

Complete Part Guide

If your NMAX is using more fuel than usual or not running as efficiently, it's often because the oxygen sensor isn't sending accurate data to regulate the air-fuel mixture. Replacing it with the original Yamaha NMAX125 Air Fuel Oxygen Sensor (Part Number: 2DP-H592A-20) for 2015-2020 restores precise readings so the ECU can maintain proper combustion. Manufactured to original Yamaha specification, it ensures exact fitment and reliable performance. With the correct data, the engine runs cleaner, smoother, and more efficiently. Available from Part Hive's London hub, with same-day UK dispatch on all orders before 1 PM.

A slow sensor response can quietly affect performance. On the NMAX-125, we see aging oxygen sensors reacting too slowly to changing conditions. That disrupts fuel delivery, leading to poor economy and rough engine behaviour. Riders often don't notice until it becomes more obvious. We connect diagnostics, monitor live readings, and check response times under load. Once confirmed, we install the original Yamaha air fuel oxygen sensor, restoring fast, accurate feedback and keeping the engine running clean and efficient.

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