Original Honda PCX 125 Spark Plug NGK LMAR8L-9 (31917-K0R-V01) | 2021-2024

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The NGK LMAR8L-9 (31917-K0R-V01) spark plug is the original replacement ignition component for the Honda PCX 125 (2021-2024). Manufactured to Honda specifications, it provides the correct reach and thread pitch to protect the cylinder head and ensure precise fitment. Replacing a worn or fouled plug helps restore reliable starting and smoother combustion, supporting consistent performance in daily commuting and stop-start traffic.

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 Honda PCX125 or free returns.

Product Compatibility

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Part Number
  • 31917-K0R-V01
Alternative Part Number

_

Model
  • PCX125
Year
  • 2021
  • 2022
  • 2023
  • 2024
MFG
  • Honda

Product Overview

This high-quality Original Spark Plug NGK LMAR8L-9 is designed to meet or exceed factory performance standards and is suitable for Honda PCX 125 (2021-2024) models.

The NGK LMAR8L-9 is a laser iridium spark plug that delivers a precise, intense spark for efficient ignition of the air-fuel mixture in the combustion chamber. As the iridium electrode gradually wears or carbon deposits build up on the plug face, the spark becomes less reliable, causing rough idling, misfires, sluggish throttle response, and reduced fuel economy. This original replacement restores sharp, reliable ignition, ensuring your PCX 125 delivers smooth performance and efficient fuel use.

- Brand New Original Spark Plug NGK LMAR8L-9
- Part Number: 31917-K0R-V01
- Original replacement for Honda PCX 125 (2021-2024)
- Restores precise iridium ignition for smooth, efficient engine performance
- Helps maintain sharp throttle response and consistent fuel economy
- Direct fit, no modification required
- Recommended for scheduled engine servicing and routine ignition 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.

• Honda PCX125 owners with a worn, fouled, or misfiring spark plug
• Replacing the Spark Plug NGK LMAR8L-9 during scheduled engine servicing or routine maintenance
• Mechanics and workshops carrying out Honda PCX125 engine and ignition servicing
• Riders wanting to restore the original engine performance and fuel efficiency of their Honda PCX125
• Anyone looking for a guaranteed original replacement for their Honda PCX125

Complete Part Guide

The spark plug is the core of the Honda PCX125 2021-2024 ignition system, providing the high-voltage arc necessary for efficient engine combustion. A degraded plug leads to sluggish acceleration, poor MPG, and difficulty starting in damp London weather. This original Honda NGK Spark Plug (31917-K0R-V01) maintains the specific heat range required for long-term engine health. Available for rapid dispatch from Part Hive's London warehouse; orders confirmed before 1 PM receive guaranteed same-day UK dispatch.

We see plenty of 2021-2024 Honda PCX-125s with riders complaining of hesitation when rolling on the throttle, and the spark plug is often the culprit. A worn electrode or incorrect gap disrupts combustion, while damp North London conditions accelerate carbon fouling. Once degraded, the plug can trigger misfire codes or even pre-ignition under load. This original Honda NGK LMAR8L-9 Spark Plug (31917-K0R-V01) is engineered to withstand high thermal cycling, preventing electrical leakage and ensuring consistent ignition. With the correct reach and pitch, it protects the cylinder head while restoring factory-sharp throttle response and dependable cold-start performance.

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