Original Yamaha XMAX 300 Valve Stem Seal x4 Set (54P-E2119-00) | 2017-2025

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Worn valve stem seals can allow oil into the combustion chamber, leading to smoke and inconsistent engine performance. This original Yamaha XMAX 300 valve stem seal x4 set (54P-E2119-00) restores proper oil control and reliable sealing across the valve system. Manufactured to original Yamaha specification, it ensures accurate fitment and dependable long-term performance. That helps keep the engine running cleaner 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 CZD300-A XMAX or free returns.

Product Compatibility

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Part Number
  • 54P-E2119-00
Alternative Part Number

_

Model
  • CZD300-A XMAX
Year
  • 2017
  • 2018
  • 2019
  • 2020
  • 2021
  • 2022
  • 2023
  • 2024
  • 2025
MFG
  • Yamaha

Product Overview

This high-quality Original Seal Valve Stem x4 Set is designed to meet or exceed factory performance standards and is suitable for Yamaha NMAX 125 (2015-2025), XMAX 300 (2017-2025), YZF-R125 (2019-2025), MT-125 (2020-2025), Tricity 125 (2021-2025), and XSR125 (2021-2025) models.

The Seal Valve Stem x4 Set provides four precision elastomeric seals, one fitted to each valve guide where the valve stem passes through the cylinder head. These seals prevent engine oil from being drawn down the valve stem into the combustion chamber during intake strokes. When the seals harden, crack, or deteriorate with age and heat, oil seeps past the valve stems causing blue exhaust smoke on start-up and under deceleration, increased oil consumption, and fouled spark plugs. This original replacement is manufactured to original factory specifications, restoring reliable performance to your Yamaha motorcycles and scooters.

- Brand New Original Seal Valve Stem x4 Set
- Part Number: 54P-E2119-00
- Original replacement for Yamaha NMAX 125 (2015-2025), XMAX 300 (2017-2025), YZF-R125 (2019-2025), MT-125 (2020-2025), Tricity 125 (2021-2025), and XSR125 (2021-2025)
- Enables a complete cylinder head valve stem seal renewal in a single kit
- Prevents oil from entering the combustion chamber via the valve stems
- Restores oil-tight valve stem sealing and reduces oil consumption
- Direct fit, no modification required
- Recommended for replacement during cylinder head overhaul or valve service
- 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 300, YZF-R125, MT-125, Tricity 125, and XSR125 owners with blue exhaust smoke, increased oil consumption, or fouled spark plugs caused by worn valve stem seals
• Replacing the Seal Valve Stem x4 Set during cylinder head overhaul or valve stem seal replacement service
• Mechanics and workshops carrying out Yamaha engine cylinder head servicing
• Riders wanting to restore the original valve stem sealing and engine oil control of their Yamaha motorcycles and scooters
• Anyone looking for a guaranteed original replacement for their Yamaha NMAX 125, XMAX 300, YZF-R125, MT-125, Tricity 125, or XSR125

Complete Part Guide

Repeated heat cycles and long-term engine use place constant stress on the valve stem seals inside the Yamaha XMAX 300 cylinder head. The original Yamaha XMAX 300 Valve Stem Seal x4 Set (54P-E2119-00) for 2017-2025 models helps regulate oil flow around the valve stems to prevent excess oil entering the combustion chamber during engine operation. Worn seals can lead to blue startup smoke, increased oil consumption, and carbon buildup over time. Manufactured to original Yamaha specification for precise fitment and dependable sealing performance. Available from Part Hive, orders placed before 1 PM qualify for same-day UK dispatch from our London hub.

The valve stem seals on the Yamaha XMAX 300 (2017-2025) are critical to maintaining clean combustion and proper oil control within the cylinder head. We often inspect worn seals where excess oil has started entering the combustion chamber, leading to smoke, fouled plugs, and less stable engine operation.

In the workshop, we test oil consumption behaviour and inspect combustion deposits during engine diagnostics. Once the seals lose their sealing effectiveness, overall engine efficiency quickly starts suffering. Installing the correct original Yamaha valve stem seal set (54P-E2119-00) restores controlled oil flow and helps maintain smooth, reliable engine performance.

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