James Gasket Super Nut 4 Speed Transmission Sprocket Seal

James Gaskets' Super Nut™ improves the sealing ability on Harley Big Twin 4 speed transmission shafts found on Knucklehead, Panhead and Shovelhead models. 

The additional seal built into the nut helps avoid transmission oil leakage from main drive gear bushing wear.

 

Fitment

• 36-64 Harley knucklehead, Panhead Big Twin (Open or closed primary)
• 65-69¬†Harley¬† Panhead Big Twin¬† (Open primary only)
• 70-80¬†Harley Shovelhead Big Twin (Stock primary)