Original Yamaha NMAX 125 Engine Crankcase Cover (B6H-E5431-00) | 2021-2024

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Discover the ultimate upgrade for your motorcycle.
Designed with precision engineering, this offers unmatched performance and durability.


When the crankcase area isn't fully covered, everything becomes more vulnerable. This original Yamaha NMAX 125 engine crankcase cover (B6H-E5431-00) restores that sealed, secure setup, keeping the engine protected and the bike looking complete again. It installs exactly as intended with no compromise on fitment.

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

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Part Number
  • B6H-E5431-00
Alternative Part Number

_

Model
  • GPD125-A NMAX
Year
  • 2021
  • 2022
  • 2023
  • 2024
MFG
  • Yamaha

Product Overview

This high-quality Original Engine Crankcase Cover is designed to meet or exceed factory performance standards and is suitable for Yamaha NMAX 125 2021-2024 models.


The Engine Crankcase Cover encloses the crankcase, protecting internal engine components from contamination and maintaining correct oil retention. A cracked or damaged crankcase cover can allow oil leaks and exposes internal components to contamination, leading to accelerated engine wear. This original replacement is manufactured to original factory specifications, ensuring a correct fit and reliable crankcase sealing.

- Brand New Original Engine Crankcase Cover
- Part Number: B6H-E5431-00
- Original replacement for Yamaha NMAX 125 (2021-2024)
- Maintains correct oil retention within the engine
- Prevents oil leaks and contamination caused by a cracked or damaged cover
- Ensures correct fitment with the engine crankcase assembly
- Plug-and-play fitment, no modification required
- Essential for engine repair, rebuild or oil leak rectification
- Built to withstand heat, impact, and daily riding conditions
- Order before 1 PM for guaranteed same-day UK dispatch
- Trade discount available for UK garages and workshops

• Yamaha NMAX 125 owners with a cracked, leaking or damaged engine crankcase cover
• Replacing the Engine Crankcase Cover following an accident, impact or general wear
• Mechanics and workshops carrying out engine repairs or overhauls
• Riders wanting to restore correct crankcase sealing and prevent oil leaks
• Those after a guaranteed original replacement for the Yamaha NMAX 125

Complete Part Guide

You might not see it, but it's working every time you ride, shielding the engine's underside from stones, road grime, and impacts. The original Yamaha NMAX125 Engine Crankcase Cover (B6H-E5431-00) for 2021-2024 restores protection over the crankcase with a precise, factory-fit finish. Manufactured to original Yamaha specification, it ensures secure mounting and reliable durability against debris, impact, and exposure. Get it from Part Hive with same-day UK dispatch on all orders before 1 PM from our London hub.

We always tell riders, "This part is supposed to wear", and that's normal. We've seen plenty on the NMAX-125 that are worn down over time, especially from daily riding. But there's a point where it crosses the line. Once it cracks or loosens, it's not doing its job anymore. That's when things start getting exposed. We replace it with the original Yamaha engine crankcase cover, and it puts that protection back in place properly.

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