• 28-0243 - Gearbox Drain Bolt

Stainless Steel Drain Bolt - 28-0243

Precision-made solid stainless steel direct replacement for the original BSA sump drain bolt (OEM 28-0243). CNC machined in one piece in England and supplied complete with new copper crush washer (02-4553) for a perfect leak-free seal.


Material: Stainless steel Parts included: 
1 X 28-0243 - Drain Bolt 1 X 02-4553 - Copper crush washer

Dimensions (Approximate, for Identification Purposes):

Length (overall): 5/8" (15.6mm) Length (underhead): 7/16" (11mm) Thread: 5/16" BSW X 18 TPI (7.7mm)


Correct for most BSA singles and twins including: A7, A10, B31, B32, B33, B34, all Gold Star models (Clubman, Catalina etc.), and many others that use part number 28-0243.

May fit other BSA models but please check your part numbers and dimensions first.

Manufacturing: Proudly made in England by CPC Engineering using precision CNC machining and high-quality stainless steel.

28-0243 - Gearbox Drain Bolt

  • £9.00

  • Ex Tax: £7.50

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