Truett and Osborn 37T Stock Flywheel Assembly for Harley-Davidson UL 1937-1946

Original-weight right and left sides are preserved in this 37T stock flywheel assembly, featuring an exact outer diameter of 8-9/32 inches for faithful UL restorations.

Designed for Harley-Davidson UL models produced from 1937 to 1946, this flywheel uses a 1941-up overhead valve crankpin (not the original stepped crankpin), enhancing compatibility with modern components while preserving authentic performance characteristics.

Manufactured in the USA from steel, the flywheel offers durable construction and smooth operation. It is compatible with related engine components and pairs with the recommended connecting rod assemblies and crankcase sets to support a complete rebuild solution.

Fitment includes UL models 1937-1946, with listings also covering UL 1947 and UL 1948.

• Part number: 37T 4 9/32 STK
• Material: Steel
• Outer Diameter: 8-9/32 inches
• Crankpin compatibility: 1941-up overhead valve crankpin (not the stepped crankpin)
• Country of origin: Made in the USA
• Fitment: Harley-Davidson UL 1937-1946; UL 1947-1948

Flywheel set feature original weight right and left sides.

The Truett & Osborn 37T 4 9/32 inch Stock Flywheel Assembly is designed specifically for Harley Davidson UL models manufactured from 1937 to 1946. Crafted in the USA, this flywheel features a robust construction with a 8-9/32 inch outer diameter, ensuring durability and reliable performance for vintage motorcycle restorations and rebuilds. Notably, this flywheel uses a 1941-up overhead valve crankpin, differing from the original stepped crankpin, which enhances compatibility with modern engine components while maintaining authentic performance characteristics. Its precise dimensions and quality manufacturing make it an essential part for enthusiasts seeking to restore their Harley UL to original specifications or improve engine stability and performance.

This assembly is compatible with various related engine components, making it a versatile choice for rebuild projects. It pairs well with the recommended connecting rod assemblies and crankcase sets, offering a comprehensive solution for engine rebuilds. The flywheel's design ensures smooth operation, and its American origin guarantees high-quality standards. Whether you're restoring a vintage Harley UL or upgrading an existing engine, this flywheel assembly provides the reliability and authenticity needed for a successful rebuild or restoration project.

Features:

• Material: High-quality steel construction for durability

• Outer Diameter: 8-9/32 inches for precise fit

• Crankpin Compatibility: Designed for 1941-up overhead valve crankpin, not the stepped crankpin

• Country of Origin: Made in the USA ensuring high manufacturing standards

• Fitment: Compatible with Harley Davidson UL models from 1937 to 1946

• Design: Engineered for reliable performance and smooth operation

Fitment:
Harley Davidson UL 1937
Harley Davidson UL 1938
Harley Davidson UL 1939
Harley Davidson UL 1940
Harley Davidson UL 1941
Harley Davidson UL 1942
Harley Davidson UL 1943
Harley Davidson UL 1944
Harley Davidson UL 1945
Harley Davidson UL 1946
Harley Davidson UL 1947
Harley Davidson UL 1948