Harddrive Primary Oil - 1 QT (12/Case Sold Ea)

Harddrive primary oil is a V-twin specific lubricant formulated for wet-clutch primary drives in Harley-Davidson and Indian motorcycles. Blended with extreme pressure additives to protect clutch plates and gears under high-performance loads.

Features

• Extreme pressure additives for film strength and wear protection
• Formulated for wet-clutch primary drives
• Compatible with 1984 and newer Big Twin Harley-Davidson motorcycles
• Sold by the quart

Specifications

• Brand: Harddrive
• Manufacturer Part #: 198503
• UPC: 191361115400
• Size: 1 quart
• Weight: 1.92 lbs

Fitment

For use in V-twin motorcycles with wet-type diaphragm spring clutches, including all 1984 and newer Big Twin Harley-Davidson models.

Frequently Asked Questions

Can I use this in my Indian Motorcycle primary?

Yes — Harddrive primary oil is formulated for all V-twin wet-clutch primaries, including Indian Motorcycle and Harley-Davidson models.

Does this work in 1984 and older Harleys?

This oil is formulated for 1984 and newer Big Twin models with diaphragm spring clutches. Check your manual for pre-1984 specifications.

How much oil does my primary hold?

Typical Big Twin primaries hold 24 oz (3/4 quart). Check your owner's manual for your specific model and capacity.

What makes this different from regular motorcycle oil?

Primary oil contains extreme pressure additives to protect wet-clutch plates and gear teeth under the high pressures of a primary drive.