www.Austin7Ulster.com › Cylinder Block - STEPPED Base Stud 3/8" to 5/16BSF Cylinder Block - STEPPED Base Stud 3/8" to 5/16BSF £2.90 sold out STEPPED Crankcase to Cylinder Block 3/8” BSF to 5/16” BSF. STEPPED Crankcase to Cylinder Block 3/8” BSF to 5/16” BSF. Sold Out Added! You Might Also Like Cam Followers - Set of 8 Std or Sports £80.00 Sports Alloy Valve Chest Cover £40.99 Sold out Clutch Springs £8.50 Top Water Manifold (Low Compression Type) £15.99 Dynamo to Housing Gasket £1.40