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 SET OF 7 - Brass Exhaust / Inlet Manifold Deep Nuts 1/4” BSF £6.99 Brass oil filler cap (Coil engines) £34.50 Sold out Valve Cap / Cup ( Single Spring Type) from £2.40 Starting Dog Housing Gasket (Mag Engine) £1.20 Oil Pressure Relief Valve - Ball and Spring £2.99