BSA Bantam Crankshaft Drive Side Oil Seal - D1, D3 Models - Pre 1954
Crankshaft drive side oil seal as used on early D1 and D3 models - locates between the two drive-side main bearings.
Associated main bearings also available - see related products.
OD: 1+7/8 (40mm)
ID: 1+1/16" (18.6mm)
Width: 1/4" (9mm)
OEM: 90-0284, 90-284