Prima Magnetic Oil Drain Plug Kit; Genuine, GY6, 139QMB

Engine Insurance: Prima Magnetic Oil Drain Plug Kit

Protecting your engine is a no-brainer with the Prima Magnetic Oil Drain Kit. This essential upgrade replaces your stock drain bolt with a high-power magnetic plug that actively captures fine metal particles and shavings circulating in your oil. By trapping these contaminants before they reach your internal bearings, you significantly extend the life of your engine—it’s one of the oldest and most effective maintenance tricks in the book.

Product Features

• Powerful Magnetism: Integrated rare-earth magnet pulls microscopic ferrous debris out of the oil flow.
• Direct Replacement: Designed as a "drop-in" upgrade for the most common 50cc, 125cc, 150cc, and 170cc scooter engines.
• Complete Kit: Includes the magnetic drain bolt, a fresh spring, and a high-quality filter screen for a total oil service solution.
• Visual Diagnostics: Allows you to inspect the magnet during oil changes to monitor the health of your engine's internal components.

Detailed Model Fitment

This kit is compatible with GY6 (139QMB & 157QMJ) based engines. If your engine code includes "QM" or "FM", this product is compatible with your vehicle.

Engine Code Reference

Fits 50cc / 80cc (139QMB) and 125cc / 150cc / 170cc (157QMJ) engines including:

• 50cc Series: 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2
• 150cc Series: 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ

Pro Tip: Every time you pull this plug for an oil change, wipe the magnet clean with a lint-free rag. A small amount of "fuzz" is normal wear, but large chunks may indicate it's time for a deeper mechanical inspection.