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

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

$7.99
$7.99
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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.
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Fitment FAQ

Will this part fit my specific model and year?

This replacement part is intended for 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). Key physical/spec details from the product data include Width (Thickness): 2x, 50cc, 49cc. Use the compatibility table and product photos together before ordering.

Do I need to match the OEM part number?

Yes. If your original part has a stamped OEM or manufacturer number, match that number first before ordering. For this replacement part, also compare the OEM number, dimensions, connector or mounting style, engine/model year, and product photos. This is especially important for GY6/TaoTao GY6 models because similar model names can use different parts by year or trim.

What models or situations does this part not fit?

Do not order this replacement part for machines outside the listed compatibility, or for units with different OEM numbers, dimensions, mounting points, connectors, or year-specific configurations. Do not rely only on the model name or engine size.

What should I check before ordering?

Before ordering, compare your original part with the photos and check the OEM number, dimensions, connector or mounting style, engine/model year, and product photos. Recheck listed specs such as Width (Thickness): 2x, 50cc, 49cc. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.