V-Twin Knucklehead Rocker Box Set For Harley EL 1936-1937

Polished Knucklehead rocker box set designed for Harley-Davidson EL models from 1936 and 1937, featuring a front rocker box with a bleeder hole drilled and tapped for cap fitting and machined snap ring grooves for secure sealing with the appropriate seal kit. Cast with exclusive tooling, this set delivers a durable, precise fit and reliable performance for restoring or maintaining your vintage engine.

• Accepts early valve cover cup set for vintage Harley Davidson EL models
• Machined snap ring grooves ensure a secure seal when paired with the correct seal kit
• Polished finish with durable cast construction
• Designed specifically for Harley Davidson EL 1936 and 1937 models
• Includes accessory items such as seal kit, retaining ring, and rocker box cap with fitting
• Crafted in Taiwan for precise fit and longevity

• Brass air bleeder valve must be ordered separately
• Rear exhaust rocker lower tin installation requires a Knucklehead-specific seal kit
• Recommended combinations: #49-1336 Knucklehead Rocker Box Seal Kit and #14-0455 V-Twin Tappet Guide O-Ring
• Suggested accessories to complete installation: #49-1793 Rocker Box Retaining Ring and #49-1791 Knucklehead Rocker Box Cap with Fitting

Use case: Restore or maintain valve train operation on Harley-Davidson EL 1936–1937 engines with a durable, precise rocker box assembly compatible with the early cup-style covers.

Knucklehead rocker box set features a polished finish. The front rocker box has the bleeder hole drilled and tapped for cap fitting.

Upgrade your vintage Harley Davidson EL engine with the V-Twin Knucklehead Rocker Box Set, designed specifically for models from 1936 and 1937. Crafted from durable cast material using exclusive tooling, this set ensures a high-quality fit and reliable performance. It features machined snap ring grooves that accommodate the appropriate seal kit, which is available separately, facilitating a secure and sealed connection within your engine assembly. This set is essential for maintaining optimal valve operation and engine efficiency on classic Harley Davidson motorcycles.
This rocker box set is compatible with the early valve cover cup set and is recommended to be used with several accessory items for proper installation. The set necessitates the addition of a brass air bleeder valve, which must be ordered separately. For the rear exhaust rocker lower tin installation, a specific seal kit designed for Knucklehead rocker boxes is required. It is also recommended to use with the #49-1336 Knucklehead Rocker Box Seal Kit and the #14-0455 V-Twin Tappet Guide O-Ring to ensure a proper seal and reliable function. Additionally, the #49-1793 Knucklehead Rocker Box Retaining Ring and the #49-1791 Knucklhead Rocker Box Cap with Fitting are suggested accessories to complete the assembly.
Constructed in Taiwan, this set offers a precise fit and durable construction, making it a reliable choice for restoring or maintaining vintage Harley Davidson engines. The set includes the necessary components to support proper valve train operation and longevity. Whether you're a restoration enthusiast or a professional mechanic, this rocker box set provides the quality and compatibility needed to keep your Harley running smoothly and efficiently for years to come.

Features:

• Accepts early valve cover cup set for vintage Harley Davidson EL models

• Machined snap ring grooves for secure sealing with separate seal kit

• Cast with exclusive tooling for durable and precise fit

• Designed for Harley Davidson EL 1936-1937 models

• Includes accessory items such as seal kit, retaining ring, and rocker box cap with fitting for complete installation

Fitment:
Harley Davidson EL 1936
Harley Davidson EL 1937