
Original Honda PCX 125 Spark Plug NGK MR8K9 X4 Packs (31918-K97-T01) | 2018-2020
Running a Workshop or Delivery Fleet? Unlock Up to 75% Trade Discount.
Discover the ultimate upgrade for your motorcycle.
Designed with precision engineering, this offers unmatched performance and durability.
Optimized for consistent ignition, these original Spark Plug NGK MR8K9 X4 Packs (31918-K97-T01) for the Honda PCX 125 (2018-2020) eliminate starting struggles and restore peak fuel efficiency. The high-conductivity design withstands extreme combustion temperatures and provides a stable spark that ensures smooth power delivery during every commute.
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.
- 31918-K97-T01
_
- PCX125
- 2018
- 2019
- 2020
- Honda
- 125
- A
- PCX125
- NEW
Product Overview
This high-quality Original Spark Plug NGK MR8K9 X4 Pack is designed to meet or exceed factory performance standards and is suitable for Honda PCX125 (2018-2020) models.
The NGK MR8K9 spark plug provides the high-voltage spark needed to ignite the air-fuel mixture in the engine's combustion chamber, ensuring smooth and efficient combustion. As the electrode wears or the plug becomes fouled with carbon deposits, the spark weakens, leading to misfires, poor idling, reduced throttle response, and increased fuel consumption. This original replacement pack of four NGK MR8K9 spark plugs is ideal for workshops and riders maintaining a stock of original service parts, restoring a clean and reliable spark to the PCX125 engine.
- Brand New Original Spark Plug NGK MR8K9 X4 Packs
- Part Number: 31918-K97-T01
- Original replacement for Honda PCX125 (2018-2020)
- Restores a strong, reliable spark for smooth and efficient engine operation
- Helps maintain responsive throttle and consistent fuel economy
- Direct fit, no modification required
- Ideal 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 MR8K9 during routine engine servicing or scheduled maintenance
• Mechanics and workshops carrying out Honda PCX125 engine and ignition servicing
• Riders wanting to restore the original engine smoothness and efficiency of their Honda PCX125
• Anyone looking for a guaranteed original replacement for their Honda PCX125
Complete Part Guide
The spark plug for Honda PCX125 2018-2020 ensures peak ignition efficiency and reliable starts. Worn electrodes compromise combustion, increasing fuel use and reducing performance. This original Spark Plug NGK MR8K9 (31918-K97-T01) replacement part restores strong spark delivery and dependable cold-weather ignition. Directly shipped from Part Hive's London warehouse; confirm your order before 1 PM for guaranteed same-day UK dispatch.
We often see 2018-2020 Honda PCX-125 units coming in with "flat spots" during acceleration, which is oftentimes a symptom of a heavily eroded spark plug. High-mileage city riding causes the electrode to round off, leading to misfires that the rider might only feel under heavy load. If you ignore a fouled plug, the unburnt fuel can contaminate your oil and degrade the catalytic converter over time. This original Honda Spark Plug (31918-K97-T01) restores engine timing and combustion stability and ensures the spark remains strong and centered, preventing the pre-ignition issues that can lead to costly internal piston damage during long-distance commutes.
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