Original Yamaha NMAX 125 Oil Pump Spring Compression (90501-16004) | 2015-2025

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


Consistent oil pressure is vital for keeping your engine properly lubricated. This original Yamaha NMAX 125 oil pump compression spring (90501-16004) helps maintain steady pressure for smooth and reliable operation. Built to original Yamaha specifications, it ensures accurate fitment and dependable performance. A weakened spring can lead to uneven oil flow. Replacing it restores stable lubrication and engine protection.

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
  • 90501-16004
Alternative Part Number

_

Model
  • GPD125-A NMAX
Year
  • 2015
  • 2016
  • 2017
  • 2018
  • 2019
  • 2020
  • 2021
  • 2022
  • 2023
  • 2024
  • 2025
MFG
  • Yamaha

Product Overview

This high-quality Original Oil Pump Spring Compression is designed to meet or exceed factory performance standards and is suitable for Yamaha NMAX 125 (2015-2025), XMAX 125 (2021-2025), and D'ELIGHT 125 (2021-2024) models.

The Oil Pump Spring Compression is the pressure relief valve spring within the oil pump assembly. It maintains the correct oil pressure by holding the relief valve closed until a set pressure threshold is reached, at which point it allows excess oil to bypass back to the sump. When the spring weakens or breaks, the relief valve opens prematurely or fails to open correctly, resulting in incorrect oil pressure that can cause inadequate lubrication of engine components or over-pressurization of the oil system. This original replacement is manufactured to original factory specifications, restoring accurate oil pressure regulation in your Yamaha scooters.

- Brand New Original Oil Pump Spring Compression
- Part Number: 90501-16004
- Original replacement for Yamaha NMAX 125 (2015-2025), XMAX 125 (2021-2025), and D'ELIGHT 125 (2021-2024)
- Maintains the correct oil pressure relief valve setting for accurate oil pressure regulation
- Eliminates incorrect oil pressure caused by a weakened or broken relief valve spring
- Direct fit, no modification required
- Recommended for replacement during oil pump overhaul or when oil pressure irregularities are detected
- 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, XMAX 125, and D'ELIGHT 125 owners with incorrect oil pressure or lubrication issues caused by a weakened or broken oil pump relief valve spring
• Replacing the Oil Pump Spring Compression during oil pump overhaul or engine lubrication system service
• Mechanics and workshops carrying out Yamaha NMAX 125, XMAX 125, and D'ELIGHT 125 engine oil pump servicing
• Riders wanting to restore accurate oil pressure regulation in their Yamaha scooters
• Anyone looking for a guaranteed original replacement for their Yamaha NMAX 125, XMAX 125, or D'ELIGHT 125

Complete Part Guide

Oil pressure needs to stay controlled, not just present. The original Yamaha NMAX125 Oil Pump Spring Compression (90501-16004) for 2015-2025 models helps regulate internal pressure within the oil pump, keeping lubrication steady across the engine. It's a small part that plays a key role in maintaining balance within the system. Built to Yamaha's original standard, it offers precise fitment, consistent tension, and reliable long-term performance. Available now from Part Hive's London hub, order before 1 PM for same-day UK dispatch.

When oil pressure isn't balanced, the engine starts to behave differently over time. The usual cause is a spring that's no longer maintaining even pressure inside the pump. We see this from time to time when checking engines with uneven wear patterns. Riders tend to look at external parts first, but the issue sits deeper. We install the correct original Yamaha oil pump spring compression and it restores proper compression force, ensures a precise fit on your NMAX-125, and brings the system back into balance.

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