Aftermarket Honda PCX 125 Cylinder Head Gasket (12251-K1Z-J11) | 2021-2025

Aftermarket
Sale price£9.50 GBP

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


This Honda PCX 125 aftermarket Cylinder Head Gasket (12251-K1Z-J11) for 2021-2025 models eliminates coolant leaks and restores a clean, aerodynamic fit. Designed to withstand extreme road vibrations and combustion pressures, it ensures silent, secure sealing performance for high-mileage 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.

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Guaranteed fitment for Honda PCX125 or free returns.

Product Compatibility

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Part Number
  • 12251-K1Z-J11
Alternative Part Number

_

  • 12251-K1N-V01, 12251-K0R-V01
Model
  • PCX125
Year
  • 2021
  • 2022
  • 2023
  • 2024
  • 2025
MFG
  • Honda

Product Overview

This high-quality Head Gasket Cylinder is designed to meet or exceed factory performance standards and is suitable for Honda PCX125 (2021-2025) models.

The head gasket cylinder is a critical sealing component that sits between the cylinder head and the cylinder barrel, maintaining a gas-tight seal to contain combustion pressure while also preventing engine oil and coolant from mixing or leaking externally. When the head gasket fails, the result can be a loss of compression, overheating, white or blue smoke from the exhaust, coolant contamination of the engine oil, or external oil and coolant leaks that gradually worsen under the heat and pressure of normal riding. This quality aftermarket replacement is built to match original specifications, restoring reliable combustion sealing and engine integrity to your PCX125.

- Brand New Aftermarket Head Gasket Cylinder
- Part Number: 12251-K1Z-J11
- Alternative Part Numbers: 12251-K1N-V01, 12251-K0R-V01
- Compatible with Honda PCX125 (2021-2025)
- Restores a gas-tight seal between the cylinder head and cylinder barrel
- Prevents combustion gas blow-by, compression loss, and external leaks
- Direct replacement, no modification required
- Suitable for top-end engine rebuild and scheduled cylinder head servicing
- 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 blown, leaking, or failed head gasket
• Replacing the Head Gasket Cylinder during top-end engine rebuild or cylinder head removal
• Mechanics and workshops carrying out Honda PCX125 engine overhaul or cylinder head servicing
• Riders wanting to restore reliable combustion sealing and engine integrity to their 2021-2025 PCX125
• Anyone looking for a quality aftermarket replacement for their Honda PCX125

Complete Part Guide

The cylinder head gasket is the critical combustion seal for the 2021-2025 Honda PCX125 , separating the cylinder bore, oil galleries, and coolant passages. A failed head gasket typically results in engine overheating, white exhaust smoke, or "mayonnaise" buildup in the oil. This performance-grade Honda aftermarket replacement (12251-K1Z-J11) provides the exact structural density needed for high-pressure sealing in North London's demanding delivery environment. Available at Part Hive's London warehouse, place orders before 1 PM for guaranteed same-day UK dispatch.

This cylinder head gasket (12251-K1Z-J11) serves as the primary pressure seal between the cylinder barrel and the head on all latest-generation Honda PCX-125 2021-2025 models. We frequently encounter scooters where the rider reports a mysterious loss of power combined with a sweet-smelling white smoke from the exhaust. These symptoms typically point to a gasket that has "blown" between the oil and water galleries, a common issue on high-mileage delivery bikes that run for hours without a break. This trade-grade Honda aftermarket gasket features the exact thickness and bore alignment required for a professional top-end rebuild. Installing this precision-cut gasket restores the engine's compression to factory levels and ensures the cooling system can effectively manage the thermal loads of stop-start city riding.

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