James Cylinder Base Gasket for Harley FL (1963–1972) – JGI-16777-63

Precisely engineered James cylinder base gasket, proudly made in the USA for Harley-Davidson FL models from 1963 through 1972, delivering reliable sealing to prevent oil leaks and maintain compression during engine rebuilds and routine maintenance.

Designed to meet OEM specifications, this gasket carries the OEM cross reference 16777-63 to ensure accurate compatibility with Harley’s original parts lineup for your restoration or repair project.

• UOM: PK (pack unit) for multiple uses or shop stocking
• Country of origin: USA
• Fits 1963–1972 Harley-Davidson FL models
• Durable materials withstand engine operation and thermal cycling
• Seals between the cylinder and engine block to prevent oil leaks and preserve compression

Whether you’re performing a full engine rebuild or routine maintenance, this James gasket provides a dependable, precise seal that helps restore original performance and reliability for your Harley-Davidson FL motorcycle.

James rear cylinder base gasket

The James Cylinder Base Gasket is a high-quality replacement component designed specifically for Harley Davidson FL models from 1963 through 1972. Crafted in the USA, this gasket ensures a precise fit and reliable sealing to maintain optimal engine performance. Manufactured by James, a trusted name in motorcycle parts, this gasket features durable materials that withstand the rigors of engine operation and thermal cycling. Its OEM cross-reference number 16777-63 makes it easy to find compatible parts for your restoration or repair project. Whether you're a professional mechanic or a dedicated motorcycle enthusiast, this gasket provides a dependable solution for your engine rebuilds or maintenance routines.

This gasket is supplied in a convenient pack unit (PK), making it suitable for multiple repairs or as a stock item for motorcycle service shops. The design ensures a proper seal between the cylinder and engine block, preventing oil leaks and maintaining compression. Installing this gasket helps restore your Harley Davidson FL to its original performance standards. Its precise dimensions and high-quality construction contribute to easy installation and long-lasting durability, making it an essential part of your engine maintenance kit. Rest assured, with James's manufacturing standards, this gasket guarantees compatibility, reliability, and peace of mind for your motorcycle repairs.

Features:

• UOM: PK - Pack unit for multiple uses or repairs

• Country of Origin: USA - Made in the USA for quality assurance

• OEM Cross Reference: 16777-63 - Compatible with OEM specifications

• Fits: 1963-1972 Harley Davidson FL models - Ensures proper fit for specific years

Fitment
Harley Davidson FL 1963
Harley Davidson FL 1964
Harley Davidson FL 1965
Harley Davidson FL 1966
Harley Davidson FL 1967
Harley Davidson FL 1968
Harley Davidson FL 1969
Harley Davidson FL 1970
Harley Davidson FL 1971
Harley Davidson FL 1972
Harley Davidson FL 1973
Harley Davidson FL 1974
Harley Davidson FL 1975
Harley Davidson FL 1976
Harley Davidson FL 1977
Harley Davidson FL 1978
Harley Davidson FL 1979
Harley Davidson FL 1980
Harley Davidson FL 1981
Harley Davidson FL 1982
Harley Davidson FL 1983
Harley Davidson FL 1984
Harley Davidson FLT 1979
Harley Davidson FLT 1980
Harley Davidson FLT 1981
Harley Davidson FLT 1982
Harley Davidson FLT 1983
Harley Davidson Fx 1971
Harley Davidson Fx 1972
Harley Davidson Fx 1973
Harley Davidson Fx 1974
Harley Davidson Fx 1975
Harley Davidson Fx 1976
Harley Davidson Fx 1977
Harley Davidson Fx 1978
Harley Davidson Fx 1979
Harley Davidson Fx 1980
Harley Davidson Fx 1981
Harley Davidson Fx 1982
Harley Davidson Fx 1983
Harley Davidson Fx 1984
Harley Davidson FXR 1982
Harley Davidson FXR 1983