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This Colony sprocket shaft bearing retainer with lip seal is designed for Harley-Davidson 74 cubic inch Big Twin models.
The retainer secures the sprocket shaft bearing in the case while the integrated lip seal helps control primary and transmission oil migration. Proper bearing retention and sealing are critical for long-term drivetrain reliability and correct oil control.
Designed for 74ci Big Twin models from 1955 through 1968, this standard-size retainer is intended for stock-style cases and bearings used during engine or transmission service.
This part replaces Harley-Davidson OEM 24031-55. Manufactured in Ohio, USA by Colony. At Boomers Bike Shop, we stock drivetrain components that fit correctly and are trusted for real vintage Harley-Davidson service work.
74ci Big Twin: 1955–1968
⚠️ Standard size. Verify case and bearing condition before installation.