Engine Oil Seal Kit for GY6 49cc 50cc 139QMB Scooter Moped ATV - 5 Piece Set

Product Overview

Eliminate engine leaks and protect your internal components with this high-performance oil seal kit. Specifically designed for the 139QMB GY6 50cc engine series, this 5-piece set provides a comprehensive seal for the crankshaft, transmission, and final drive areas. By maintaining a debris-free internal environment and regulating internal pressure, these seals ensure your engine remains clean, lubricated, and efficient.

Product Compatibility

This kit is a direct replacement for the standard 4-stroke 50cc Chinese engine platform:

Vehicle Type	Popular Brands	Engine Model
Scooters / Mopeds	TaoTao, Peace Sports, IceBear, Wolf, Bintelli	GY6 49cc/50cc (139QMB)
ATVs / Quads	Coolster, TaoTao, Mountopz, Redcat	50cc 4-Stroke
Go Karts	TrailMaster, Kandi, Hammerhead	50cc 4-Stroke

Specifications

This kit includes 5 essential seals with the following dimensions:

Quantity	Inner Diameter	Outer Diameter	Width (Thickness)
2x	19.8mm (0.77")	30mm (1.18")	5mm (0.19")
1x	17mm (0.66")	30mm (1.18")	6mm (0.23")
1x	20mm (0.78")	32mm (1.25")	7mm (0.27")
1x	27mm (1.06")	42mm (1.65")	7mm (0.27")

Key Features

• Dual-Action Protection: Prevents external dust and road grime from damaging the seal lips while simultaneously managing internal pressure to prevent oil seepage.
• High-Strength Rubber Construction: Made from premium-grade rubber that is resistant to high temperatures, aging, and chemical corrosion for long-lasting performance.
• Reinforced Skeleton Design: Features an internal skeleton that acts as a reinforcement, allowing the seal to maintain its shape, tension, and structural integrity under high RPMs.
• Leak Risk Reduction: Specifically engineered to prevent oil from the outer cylinder from accumulating in unwanted areas, ensuring a dry and clean engine exterior.
• Precision Fit & Easy Install: Light, durable, and designed to match 139QMB factory specifications exactly, making installation straightforward for DIY mechanics.