James Gaskets Transmission Gasket - Seal Main Drive Gear 5 Speed Sportster 5/PK… — Harley-Davidson (2008-2019)

James Gaskets transmission main drive gear seal for 5-speed Sportster transmissions, sold in a 5-pack. OEM-quality gasket made in the U.S.A. for reliable sealing at the primary drive coupling.

Features

• 5-pack quantity
• Made in the U.S.A.
• OEM-specification seal

Specifications

• Brand: James Gaskets
• Manufacturer Part #: 12030
• Weight: 0.45 lbs
• Quantity: 5 per pack

Fitment

Fits 5-speed Harley-Davidson Sportster transmissions.

Frequently Asked Questions

What does this seal do?

Seals the main drive gear mounting point on the transmission to prevent oil seepage between the primary case and transmission housing.

Will this fit my Twin Cam or Milwaukee-Eight Sportster?

This part is engineered for 5-speed Sportster transmissions. Twin Cam and M8 models use different seals — verify your transmission type before ordering.

Why is this sold in a 5-pack?

Pack quantity is intended for shops and riders who service multiple bikes or want replacement gaskets on hand.

Is installation complicated?

Installation requires transmission disassembly. If you're not experienced with transmission work, have a qualified mechanic handle the service.