Original Yamaha NMAX 125 Fuel Injector Assembly (BB8-E3770-10) | 2015-2024

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


Poor running often comes down to fuel delivery. If the mix isn't right, nothing else feels right either. This original Yamaha NMAX 125 fuel injector assembly (BB8-E3770-10) fixes that at the source, restoring proper atomisation and consistent combustion for smoother performance.

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
  • BB8-E3770-10
Alternative Part Number

_

Model
  • GPD125-A NMAX
Year
  • 2015
  • 2016
  • 2017
  • 2018
  • 2019
  • 2020
  • 2021
  • 2022
  • 2023
  • 2024
MFG
  • Yamaha

Product Overview

This high-quality Original Fuel Injector Assy is designed to meet or exceed factory performance standards and is suitable for Yamaha NMAX 125 (2015-2024), Tricity 125 (2017-2024), XSR125 (2021-2025), YZF-R125 (2015-2025), and MT-125 (2015-2025) models.

The Fuel Injector Assy delivers precisely metered fuel into the intake port at the correct timing and pressure, enabling efficient combustion and optimal engine performance. A worn, clogged, or leaking fuel injector causes poor idle, hesitation under acceleration, increased fuel consumption, and may trigger an engine fault code if left unaddressed. This original replacement is manufactured to original factory specifications, restoring precise fuel delivery and reliable engine performance to your Yamaha motorcycles.

- Brand New Original Fuel Injector Assy
- Part Number: BB8-E3770-10
- Original replacement for Yamaha NMAX 125 (2015-2024), Tricity 125 (2017-2024), XSR125 (2021-2025), YZF-R125 (2015-2025), and MT-125 (2015-2025)
- Delivers precisely metered fuel at the correct pressure and timing for efficient combustion
- Restores smooth idling and responsive throttle performance
- Eliminates hesitation, rough running, and increased fuel consumption for consistent engine performance
- Direct fit, no modification required
- Recommended for replacement during fuel system service or when poor idle, hesitation, or injector fault codes are present
- 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, Tricity 125, XSR125, YZF-R125, and MT-125 owners with poor idle, hesitation, increased fuel consumption, or an injector fault code caused by a worn or clogged fuel injector
• Replacing the Fuel Injector Assy during fuel system service or scheduled injection system maintenance
• Mechanics and workshops carrying out Yamaha NMAX 125, Tricity 125, XSR125, YZF-R125, and MT-125 fuel system servicing
• Riders wanting to restore the original fuel delivery and engine performance of their Yamaha motorcycles
• Anyone looking for a guaranteed original replacement for their Yamaha NMAX 125, Tricity 125, XSR125, YZF-R125, or MT-125

Complete Part Guide

A sudden drop in fuel efficiency is often linked to poor atomization inside the engine, and the original Yamaha NMAX125 Fuel Injector Assembly (BB8-E3770-10) for 2015-2024 models is designed to restore that fine, even spray pattern. When the injector fails to deliver a fine, consistent spray, combustion becomes inefficient and fuel consumption increases. This component restores optimal spray pattern and fuel control, ensuring efficient combustion and better mileage. Built to Yamaha's original specifications, it ensures precise fitment and long-term reliability. Available now from Part Hive's London hub, enjoy same-day UK dispatch on all orders completed before 1 PM.

Rough idle is one of the most common signs we see. Usually, it's down to uneven fuel delivery from a worn or dirty injector. In the workshop, we notice engines struggling to stay steady even when everything else checks out. Riders often ignore it until it gets worse. We replace it with the original Yamaha fuel injector assembly, and it smooths everything out, steady idle, clean burn, no hunting on your NMAX-125.

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