Gearbox Drain Plug, for use on BSA models: A7, A10, B31, B32, B33, B34, C10, C11, C11G & C12.O.E.M: 28-0243BSA A / B / C Group Gearbox Drain Plug. 28-0243. M28-0243SKU: 28-0243£4.99PriceQuantity*Add to Cart