Blue Line Ignition Coil w/ 18" Lead :139QMBand GY6 50/150cc

Reliable Ignition: Blue Line GY6 50/150cc Ignition Coil

Restore your engine’s firing consistency with the Blue Line Ignition Coil Assembly. Engineered as a high-quality, OEM-equivalent replacement for the GY6 and 139QMB engine platforms, this coil is the solution for common electrical issues like weak spark, intermittent stalling, or "no-start" conditions. Whether you are maintaining a daily commuter or refreshing a project bike, Blue Line provides the factory-level performance you need without the premium price tag.

Technical Performance Features

• Complete Assembly: Includes a high-output two-pole coil, a heavily insulated 18-inch spark plug wire, and a reinforced 90-degree spark plug cap for a total ignition overhaul.
• Extended 18" Plug Wire: The generous lead length provides extra flexibility for custom mounting and ensures compatibility with "Long Case" scooters, where the coil is mounted further from the cylinder head.
• Weather-Sealed Cap: Features a thick rubber boot at the plug connection to prevent moisture and debris from grounding out your spark in wet riding conditions.
• Dual-Pole Connection: Designed for standard GY6 wiring harnesses, making this a true "plug-and-play" installation with no splicing required.

Comprehensive Fitment Guide

This ignition coil is compatible with 50cc, 125cc, 150cc, and 170cc 4-Stroke Engines. If your engine code includes "QM" or "FM", this part is a direct fit:

Technical Specifications

• Wire Length: 18 Inches (457mm)
• Coil Type: 2-Pole (Primary/Ground)
• Spark Plug Cap: 90-Degree Resistor Style
• Brand: Blue Line (OEM-Equivalent)

Mechanic's Note: Ignition coils often fail when they get hot, leading to a scooter that runs for 10 minutes and then dies. Pro Tip: When installing this new coil, always pair it with a fresh NGK CR7HSA Spark Plug. A fouled or old plug can put unnecessary strain on your new coil, leading to premature failure.

SKU: 0900-1104
Original Parts For Scooters SKU 164-329, SKU 164-55
Vendor: Blue Line

Compatibility:

157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:

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