Original Yamaha NMAX 125 Left Switch Handle Indicator & Horn (2DP-H3973-00) | 2015-2020

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


The left switch manages several key functions from a single control point. This original Yamaha NMAX 125 left handle switch indicator and horn (2DP-H3973-00) restores smooth coordination between indicators, horn, and lights. Manufactured to original Yamaha specifications, it delivers accurate fitment and reliable use. A faulty switch can disrupt multiple systems at once. Replacing it restores proper function across the board.

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.

Order in the next -- hours -- mins for guaranteed 1 PM Same-Day Dispatch from our London NW10 Hub.
Protect your shift — Back on the road tomorrow.

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

Product Compatibility

Compatibility charts are for reference only. Please compare part numbers and manufacturers' details. Contact us before ordering if unsure to avoid delays or refund charges.

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Part Number
  • 2DP-H3973-00
Alternative Part Number

_

  • 2DP-H3973-01
Model
  • GPD125-A NMAX
Year
  • 2015
  • 2016
  • 2017
  • 2018
  • 2019
  • 2020
MFG
  • Yamaha

Product Overview

This high-quality Original Left Switch Handle Indicator Horn is designed to meet or exceed factory performance standards and is suitable for Yamaha NMAX 125 (2015-2020) models.

The left switch handle assembly integrates the turn signal indicator switch and horn button on the left handlebar, providing the rider with essential signalling and audible warning controls. With continued use, contact wear and moisture ingress can cause intermittent or complete failure of the indicator or horn functions, potentially affecting road safety and legal compliance. This original replacement restores dependable left-side handlebar control, returning reliable indicator and horn operation to your NMAX 125.

• Brand New Original Left Switch Handle Indicator Horn
• Part Number: 2DP-H3973-00
• Alternative Part Numbers: 2DP-H3973-01
• Original replacement for Yamaha NMAX 125 (2015-2020)
• Restores dependable indicator switching and horn activation
• Helps maintain correct road signalling and audible warning functions
• Direct fit, no modification required
• Suitable for handlebar switch replacement and scheduled electrical maintenance
• 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 worn, intermittent, or unresponsive left indicator or horn switch
• Replacing the Left Switch Handle Indicator Horn during handlebar switch repair or electrical fault diagnosis
• Mechanics and workshops carrying out Yamaha NMAX 125 handlebar switch and electrical system servicing
• Riders wanting to restore the original left-handle control function of their Yamaha NMAX 125
• Anyone looking for a guaranteed original replacement for their Yamaha NMAX 125

Complete Part Guide

Clear signals and quick reactions matter on UK roads. The original Yamaha NMAX125 Left Handle Switch Assembly (2DP-H3973-00) for 2015-2020 models gives you full control over indicators, horn, and lights, helping you stay visible and predictable in traffic. Positioned for easy access, it ensures smooth and reliable operation when you need it most. Built to Yamaha's original specification, it fits properly and performs consistently. In stock at Part Hive's London hub, order before 1 PM for same-day UK dispatch.

A common issue we see is indicators working one minute and not the next. In the workshop, this comes up quite a lot, especially on NMAX-125 used daily. The internal contacts wear down or get contaminated from moisture and dirt. Riders often think it’s wiring or the relay, but it usually comes back to the switch. We replace it with this original Yamaha left handle switch indicator and horn unit and it restores proper contact, fits snug, and gives consistent response again.

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