L.A. Sleeve 3.312 Inch Cylinder Sleeve for Knucklehead 1936-1940 (T-607H)

Replace and restore Knucklehead cylinders with the L.A. Sleeve 3.312 inch cylinder sleeve, designed specifically for Harley-Davidson EL models from 1936 to 1940. Made in the USA from durable metal, it delivers a precise fit and reliable performance for vintage engines.

Key specifications and fitment:

• Size: 3.312 inch cylinder sleeve; Outer diameter: 3.444 inches (for precise fitment with original Knucklehead cylinders)
• Compatibility: Harley-Davidson EL 1936–1940 (Knucklehead engines)
• Material: Durable metal
• Country of origin: Made in USA
• Part number: T-607H
• Includes: Replacement cylinder sleeve designed for easy installation

Installation notes: For best results, use compatible accessory tools such as the Ring-O-Matic Ring Compressor Kit and Cylinder Hold Down Nuts Tool to ensure proper fitting and sealing during rebuilds.

Benefits: Restores the cylinder’s original integrity, helps improve engine compression and longevity, and supports a factory-quality rebuild or repair for professionals and Harley enthusiasts restoring vintage engines.

Replacement cylinder sleeve 3.312 inch for Knucklehead cylinders

Upgrade your Harley Davidson Knucklehead engine with the L.A. Sleeve 3.312 inch cylinder sleeve, designed specifically for models from 1936 to 1940. Crafted in the USA, this high-quality replacement part ensures a precise fit and reliable performance. The sleeve features an outer diameter of 3.444 inches, making it compatible with original Knucklehead cylinders and providing a seamless fit for restoring or rebuilding vintage Harley engines. Made from durable materials, this cylinder sleeve is engineered to withstand the rigors of engine operation, offering long-lasting reliability and maintaining optimal engine compression.
Installation of this cylinder sleeve is facilitated with accessory tools such as the Ring-O-Matic Ring Compressor Kit and Cylinder Hold Down Nuts Tool, which are recommended for proper fitting and sealing. The sleeve's design ensures it restores the cylinder’s original integrity, helping to improve engine performance, compression, and longevity. Whether you're a professional mechanic or a Harley enthusiast performing a restoration, this part is essential for achieving a factory-quality rebuild or repair. Trust in the precision and craftsmanship of L.A. Sleeve to keep your vintage Harley running smoothly for miles to come.

Features:

• Material: Durable metal suitable for vintage Harley Davidson engines

• Compatibility: Fits 1936-1940 Harley Davidson EL models

• Outer Diameter: 3.444 inches for precise fitment

• Country of Origin: Made in USA for quality assurance

• Includes: Replacement cylinder sleeve designed for easy installation

Fitment:
Harley Davidson EL 1936
Harley Davidson EL 1937
Harley Davidson EL 1938
Harley Davidson EL 1939
Harley Davidson EL 1940