does anyone know the part number for a rear crank seal on a classic please

 

806786040

86x103x10 (size)

 

Also replace the rubber sealent on the plastic end cap to the oil breather gallery next to the rear main while your at it, did my rear main and had to have it back out again 4 weeks later to investigate the same oil leak only to find the end cap leaking. Dry as a bone now and has been for two years.
Nardoblue

 

nard sorry to be stupid but i dont know what you mean, any more info or part number?