Blue Line Scooter Ignition Coil for 50cc 150cc GY6 w/ Cap. 18" Lead (139QMB)

Blue Line Scooter Ignition Coil for 50cc 150cc GY6 w/ Cap. 139QMB
Part #: 0900-1104

Restore your engine's firing consistency with the Blue Line Ignition Coil Assembly. An OEM-equivalent replacement for GY6 and 139QMB engine platforms, this coil solves common electrical issues like weak spark, intermittent stalling, and no-start conditions. The 18-inch lead provides extra flexibility for custom mounting and ensures compatibility with long-case scooters where the coil sits further from the cylinder head.

Key Features

• Complete assembly - includes 2-pole coil, 18" spark plug wire, and 90-degree resistor-style spark plug cap
• 18" plug wire - extra length for custom mounting and long-case engine compatibility
• Weather-sealed cap - thick rubber boot prevents moisture and debris from grounding out your spark
• Dual-pole connection - plug-and-play fit for standard GY6 wiring harnesses; no splicing required

Specifications

• Wire Length: 18 inches (457mm)
• Coil Type: 2-pole (primary/ground)
• Spark Plug Cap: 90-degree resistor style
• SKU: 0900-1104

Compatibility
Fits 50cc, 125cc, 150cc, and 170cc 4-stroke engines. If your engine code includes "QM" or "FM", this is a direct fit:

Compatible Engine Codes
50cc 4-stroke 139QMB, 1P39QMB, 139QMA, YN139QMB
125cc / 150cc 152QMI, 157QMJ, 1P57QMJ, JJ157QMJ, BN157QMJ, YN1P57QMJ, 1P52FMI, 154FMI
170cc / Stroker 161QMK, 1P61QMK, BN161QMK-A

Mechanic's Tip: Ignition coils often fail when hot, causing a scooter that runs for 10 minutes then dies. When installing this coil, always pair it with a fresh NGK CR7HSA spark plug - a fouled or old plug puts unnecessary strain on the new coil and can cause premature failure.

Questions about parts & compatibility? Visit the contact page. - HB SCOOTERS PARTS - Professional Scooter Dealership in Southern California Since 2008