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 Fan Belt (Coil Engine) £8.50 Standard size Valves (Exhaust or Inlet) from £8.50 Cylinder Block Base Stud (EN16T) - All models 5/16BSF Sale Price: £2.20 Original Price: £2.50 Sale 1st Motion Shaft Rollers / Bearings (17 off) - 3 speed gearbox £4.99 Clutch lever arm set - 4 speed £39.99