www.Austin7Ulster.com › High Compression Head Gasket H.C. High Compression Head Gasket H.C. £32.00 HC Head Gasket, by 7CA(Two bolts on top water manifold) HC Head Gasket, by 7CA(Two bolts on top water manifold) Add To Cart Added! You Might Also Like Top Water Manifold (Low Compression Type) £11.99 Propshaft Flange D Bolts Late 1935-39 5/16 BSF £3.35 Felt Oil Seal for Mag Engine starting nut £2.50 Gearbox gasket set - 3 Speed early 1923-27 £4.99 Starting Dog Housing Gasket (Mag Engine) £1.20