

Aftermarket Honda PCX 125 Spark Plug LMAR8L-9 (31917-K0R-V00) | 2021-2024
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Discover the ultimate upgrade for your motorcycle.
Designed with precision engineering, this offers unmatched performance and durability.
The aftermarket Spark Plug (31917-K0R-V00) for Honda PCX 125 (2021-2024) restores reliable ignition and engine efficiency when the existing plug is fouled or eroded. Designed for a factory-perfect fit within the cylinder head, it eliminates misfires and ensures a consistent spark across all RPM ranges. Replacing a tired plug with this high-quality component restores crisp throttle response and ensures your scooter remains dependable for daily commuting.
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.
Guaranteed fitment for Honda PCX125 or free returns.
Delivery Information
Orders placed before 12:00pm (UK time) are usually dispatched the same working day. Orders placed after this time will be dispatched on the next working day.
In the rare event of a stock shortage, we will notify you promptly and issue a full refund within one working day if the item cannot be supplied.
Once dispatched, tracking information will be provided via email, provided valid contact details are supplied at checkout.
While we aim to meet all estimated delivery times, delays may occasionally occur due to circumstances beyond our control, such as courier issues, weather conditions, or operational disruptions. Should this happen, we will keep you informed.
Delivery Areas
We currently deliver to:
• United Kingdom
• Republic of Ireland
• Isle of Man
• Jersey & Channel Islands
• Most European destinations
If you are unsure whether we deliver to your location, please contact us prior to placing your order.
Verified UK Entity #15361806 operating from our NW10 London Logistics Hub. Skip the wait with express workshop pickup.

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.
Trademark Disclaimer: All trademarks, brand names, and logos remain the property of their respective owners and are used solely for identification and compatibility purposes. We are an independent retailer and are not affiliated with any authorized dealer or distributor.
- 31917-K0R-V00
_
- PCX125
- 2021
- 2022
- 2023
- 2024
- Honda
- 125
- A
- PCX125
- NEW
Product Overview
This high-quality Aftermarket Spark Plug LMAR8L-9 (31917-K0R-V00) is designed to meet or exceed factory performance standards and is suitable for Honda PCX 125 (2021–2024) models.
The spark plug generates the electrical spark required to ignite the air-fuel mixture inside the engine, supporting smooth combustion, efficient fuel delivery, and reliable everyday performance. Over time, the electrode can wear down while carbon deposits build across the firing tip, weakening spark strength and leading to rough idling, hesitation under acceleration, reduced fuel economy, misfires, and difficult cold starts. This aftermarket replacement is engineered for fit and function, restoring consistent ignition performance, smoother throttle response, and dependable engine operation for your Honda PCX 125.
- Brand New Aftermarket Spark Plug LMAR8L-9
- Part Number: 31917-K0R-V00
- Compatible with Honda PCX 125 (2021-2024)
- Restores reliable ignition for smooth and efficient engine performance
- Helps maintain consistent fuel economy, throttle response, and cold-start reliability
- Reduces misfires, rough idling, and hesitation under acceleration
- Engineered for fit and function to match factory ignition specifications
- Direct fit replacement, no modification required
- Recommended replacement during scheduled 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 PCX 125 owners with a worn, fouled, or misfiring spark plug affecting engine performance
• Replacing the Spark Plug LMAR8L-9 (31917-K0R-V00) during scheduled servicing or routine maintenance
• Mechanics and workshops carrying out Honda PCX 125 engine and ignition system servicing
• Riders wanting to restore smooth ignition performance, fuel efficiency, and reliable cold starts
• Anyone looking for a high-quality aftermarket replacement for their Honda PCX 125 ignition system
Complete Part Guide
The spark plug is the essential ignition component for the 2021-2024 Honda PCX125, responsible for firing the combustion cycle that keeps your engine running smoothly. A fouled or worn plug causes poor fuel economy, difficult cold starts, and intermittent stalling in traffic. This performance-grade replacement LMAR8L-9 (31917-K0R-V00) ensures reliable electrical conductivity and heat range management. Stocked at Part Hive's London warehouse, we offer same-day UK dispatch for orders placed by 1 PM.
We see plenty of 2021-2024 Honda PCX-125s struggling with "lumpy" idling or a loss of top-end power, often down to a carbon-fouled or eroded spark plug electrode. If you're riding through North London winter dampness, a degraded plug will eventually lead to a "no-start" condition right when you need the bike most. This premium performance-grade LMAR8L-9 spark plug (31917-K0R-V00) features the exact reach and thread pitch required to prevent cylinder head damage. It allows the insulator to stay hot enough to burn off carbon during heavy city filtering while remaining cool enough to handle the thermal load of high-speed bypass runs. Replacing a tired plug with this high-quality alternative restores crisp throttle response and reliable ignition.
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