Colony Chrome Stock Headbolt with Aluminum Heads for Harley-Davidson UL Engines (1937–1946)

Chrome-plated steel headbolts with aluminum heads deliver secure torque retention and efficient heat dissipation for Harley-Davidson UL engines from 1937 through 1946.

Made in the USA, this Colony headbolt kit is precision-engineered for exact fitment and reliable torque, supporting the integrity of your engine’s cylinder heads during restoration or routine maintenance.

The complete kit includes the headbolt, washers, and installation accessories (specialized wrenches and installation tools) for a full replacement, simplifying the installation process.

Design and compatibility:

• Material: Chrome-plated steel with aluminum heads
• Compatibility: Harley-Davidson UL models 1937–1946
• Country of origin: Made in the USA
• Torque retention: Precision-engineered for exact fitment
• Heat management: Aluminum heads assist in heat dissipation during operation

Ideal for vintage Harley restorations or upgrades, this headbolt set maintains form and function while meeting or exceeding OEM specifications for dependable performance.

Chrome stock headbolt with aluminum heads.

Enhance your vintage Harley Davidson UL engine with the Colony Chrome Stock Headbolt featuring durable aluminum heads. Crafted in the USA, this headbolt kit is designed to provide a secure and long-lasting fit for models from 1937 through 1946. The chrome finish offers corrosion resistance and a sleek appearance, complementing your restoration or upgrade project. Each kit includes precision-engineered components to ensure proper torque and fitment, making it an essential part for maintaining the integrity of your engine's cylinder heads.
This headbolt set is compatible with a range of Harley Davidson UL models, ensuring a direct replacement that maintains original performance standards. The aluminum heads contribute to heat dissipation, helping to manage engine temperatures during operation. Its robust construction guarantees reliability under demanding conditions, whether you're restoring a classic bike or performing routine maintenance.
The kit includes all necessary accessory items such as specialized wrenches and washers, ensuring a complete installation experience. Designed for ease of use, these components streamline your assembly process and promote optimal engine performance. Trust Colony's manufacturing expertise and American craftsmanship to deliver quality parts that meet or exceed OEM specifications. Perfect for vintage Harley enthusiasts, this headbolt set maintains both form and function for your motorcycle's long-term durability.

Features:

• Material: Chrome-plated steel with aluminum heads for corrosion resistance and heat dissipation

• Compatibility: Fits Harley Davidson UL models from 1937 to 1946

• Complete Kit: Includes headbolt, washers, and installation tools for a full replacement

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

• Design: Precision-engineered for exact fitment and reliable torque retention

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