NGK Spark Plug MR8K-9

Overview

NGK is a globally recognised leader in ignition technology, producing high-quality spark plugs engineered for reliable starting, efficient combustion and long service life. Designed to meet OEM specifications, NGK plugs are trusted by manufacturers and workshops worldwide.

NGK Spark Plug MR8K-9
Wemoto Product Code: AH9403
The NGK MR8K-9 is a resistor-type spark plug designed to deliver dependable ignition performance and smooth engine operation. The “-9” designation indicates a factory-set 0.9mm electrode gap, supporting reliable combustion and efficient engine performance in compatible motorcycle applications.

Technical Specifications

• Thread Size: 10mm
• Thread Pitch: 1.0mm
• Hex Size: 16mm (5/8")
• Reach: 19mm
• Heat Range: 8

Featuring NGK’s proven spark plug construction and an internal resistor to help suppress electrical interference, the MR8K-9 provides stable ignition performance and efficient combustion. It is suitable as a direct replacement where this exact specification is required by the manufacturer.

Key Features & Benefits

• Genuine NGK spark plug
• Resistor type to reduce electrical interference
• Factory-set 0.9mm electrode gap (-9 specification)
• Reliable ignition performance
• Heat range 8 for correct thermal performance in specified applications
• 10mm thread with 19mm reach
• Suitable for motorcycles and compatible engines requiring MR8K-9 specification

Why buy from Wemoto

• Fast dispatch and reliable delivery
• Extensive range of motorcycle, scooter and ATV parts
• Knowledgeable customer support team