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 Knurled Knobs for Alloy Valve Chest Cover (2 off) £12.00 Sold out Gearbox gasket set - 3 speed late 1927-32 £4.99 Starter Dog / Crankshaft Tab / Lock Washer £0.65 Valve Collets (Pair) £2.50 Fan Belt (Coil Engine) £8.50