www.Austin7Ulster.com › Bell Housing - STEPPED Stud 3/8" to 5/16BSW Bell Housing - STEPPED Stud 3/8" to 5/16BSW £3.20 STEPPED Crankcase to Cylinder Block 3/8” BSW to 5/16” BSW. STEPPED Crankcase to Cylinder Block 3/8” BSW to 5/16” BSW. Add To Cart Added! You Might Also Like Rear Main Oil Seal Plate c/w Modern seal £27.50 1st Motion Shaft Rollers / Bearings (17 off) - 3 speed gearbox £4.99 5/16” BSF Barrel Nut - block to crankcase studs £2.50 Valve Chest Cork Gasket £2.30 Oil Pump Vane Springs - Set of 2 £2.50