Motorshop Rocker Arm Shaft A-17445-SET for Harley EL/FL (1936–1947)

Precision-ground Sifton Knucklehead rocker arm shaft set designed to restore proper end play and valve-train timing on Harley-Davidson EL and FL models. Made in Taiwan to meet OEM specifications, it provides durable, correctly fitted rocker arms for vintage restorations and repairs.

• Includes front intake, rear intake, front exhaust, and rear exhaust shafts
• Ground surface dimensions: Front intake 4.115", Rear intake 3.6", Front exhaust 4.6345", Rear exhaust 5.119"
• Compatible with Harley Davidson EL (1936–1940) and FL (1941–1947) series
• Shovelhead rocker arm shims can be used on the left side of Knucklehead rocker arms to adjust end play in sizes.005,.007, and.015 inches
• Complete installation instructions are available online
• Accessory items: 16-1804 - Rocker Arm Bushing Reamer Tool; 16-1848 - Rocker Arm Bushing and Roller Bearing Puller

Designed for professional rebuilds and hobbyist projects, this set aims to maintain longevity and efficient functioning of the engine’s valve train when installed and adjusted correctly.

Sifton Knucklehead rocker arm shaft set.

The Motorshop Standard Rocker Arm Shaft set is designed to restore and maintain optimal performance for Harley Davidson models from 1936 to 1945, including the EL and FL series. Crafted in Taiwan, this set ensures durability and precise fitment for vintage motorcycle restorations and repairs. The set includes carefully engineered front and rear intake and exhaust shafts, with ground surfaces measuring approximately 4.115 inches, 3.6 inches, 4.6345 inches, and 5.119 inches respectively, providing a reliable base for your rocker arm assembly. These dimensions are critical for ensuring proper clearance and end play, contributing to smoother engine operation and longevity of the rocker arms. The set is ideal for mechanics and enthusiasts seeking quality replacement parts that match OEM specifications and improve engine performance. Users should note that Shovelhead rocker arm shims can be used on the left side of Knucklehead rocker arms to fine-tune end play, with available shim sizes of.005,.007, and.015 inches. Complete installation instructions are available online for reference, making this set suitable for both professional rebuilds and hobbyist projects. With compatibility spanning multiple Harley Davidson models from the late 1930s to the mid-1940s, this rocker arm shaft set is an essential component for maintaining vintage Harley Davidson motorcycles. Proper installation and adjustment will ensure the longevity and efficient functioning of your engine’s valve train, contributing to a smooth ride and reliable performance.

Features:

• Ground surface dimensions precisely machined for optimal fit and performance

• Includes front intake, rear intake, front exhaust, and rear exhaust shafts

• Compatible with Harley Davidson EL and FL series from 1936 to 1945

• Made in Taiwan to meet OEM specifications and quality standards

• Accessory Items: 16-1804 - Rocker Arm Bushing Reamer Tool, 16-1848 - Rocker Arm Bushing and Roller Bearing Puller

• Shovelhead rocker arm shims can be used on the left side of Knucklehead rocker arms to adjust end play, available in.005,.007, and.015 inch sizes

Fitment:
Harley Davidson EL 1936
Harley Davidson EL 1937
Harley Davidson EL 1938
Harley Davidson EL 1939
Harley Davidson EL 1940
Harley Davidson FL 1941
Harley Davidson FL 1942
Harley Davidson FL 1943
Harley Davidson FL 1944
Harley Davidson FL 1945
Harley Davidson FL 1946
Harley Davidson FL 1947