DYNO DAVE STEEL CLUTCH ROD SEAL FOR NORTON COMMANDO

The Norton Commando Clutch Rod Seal by Dyno Dave is the definitive solution to one of the most common problems on the Norton Commando: gearbox oil migrating past the clutch pushrod and contaminating the clutch plates. Oil-soaked plates cause clutch slip under load and dragging when cold, making this seal an essential upgrade for any Commando owner.

Manufactured by Dyno Dave to exacting standards, this steel clutch rod seal assembly replaces the standard setup and installs a threaded steel seal holder with a high-quality O-ring at the end of the gearbox main shaft. This creates a positive barrier that keeps thick gearbox oil where it belongs – out of the primary chaincase and away from your clutch plates.

Key Features

• Machined steel construction for long-lasting durability
• High-quality O-ring included – easy to replace if needed
• Permanently eliminates primary case oil contamination caused by gearbox oil seeping past the clutch pushrod
• Essential for belt drive conversions and fiber clutch plate applications
• Fits all Norton Commando models 1968-1975

Part Numbers

Replaces Norton part numbers 04-0373 and 06-8833. Also cross-references as 040373 and 068833.

Installation Notes

Before fitting, measure the depth of the seal holder against the length of the exposed main shaft beyond the clutch centre nut – the seal holder must not bottom out against the clutch centre nut. Blue Loctite is recommended on the threads during assembly. Tighten to approximately 1-2 ft-lbs only; overtightening can split the seal holder. Full installation instructions are available from Dyno Dave.