S&S Cycle Pinion Shaft Gear Spacer for Harley Big Twin Oil Pump Drive 1954–1989

This S&S Cycle pinion shaft gear spacer is designed for the oil pump drive gear on Harley-Davidson Big Twin engines.

The spacer is used to establish correct gear spacing between the pinion shaft and oil pump drive gear, helping ensure proper engagement and consistent oil pump operation. Correct spacing is critical to prevent premature wear and maintain reliable oil system function.

Designed for Big Twin Harley-Davidson engines from 1954 through 1989, this spacer is intended for stock-style oil pump drive applications on Panhead and Shovelhead motors, as well as early Evolution engines where applicable.

Manufactured in the United States by S&S Cycle. At Boomers Bike Shop, we stock oil system components that fit correctly and are trusted for real vintage and early Big Twin engine builds.

Fits Harley-Davidson Big Twin Models:

Big Twin: 1954–1989

⚠️ For use with stock-style oil pump drive gear setups. Verify application during engine assembly.