www.Austin7Ulster.com › Cylinder Block - STEPPED Base Stud 3/8" to 5/16BSF Cylinder Block - STEPPED Base Stud 3/8" to 5/16BSF £3.20 STEPPED Crankcase to Cylinder Block 3/8” BSF to 5/16” BSF. STEPPED Crankcase to Cylinder Block 3/8” BSF to 5/16” BSF. Add To Cart Added! You Might Also Like Neophrene Base Gasket £5.99 Sold out Sports Alloy Valve Chest Cover £40.99 Sold out Hardy Spicer Type Universal Prophaft Joint UJ £9.99 Crankshaft Front Angular Contact Bearings (2 off) MJT 1-1/8 £156.00 Oil Pump Cover Gasket £0.55