Oil Pressure Relief Valve Pistons

Standard replacement Oil pressure relief piston for use on all Type 1 engines from 1970 onwards with dual opil relief systems and 1200cc Type 1 engines (34HP) from 1961 to 1969 winth single oil pressure relief systems.

This piston with groove has the dimensions 16x24 mm (standard size) and is suitable for all Type-1 engines with single oil pressure relief system which were originally fitted to 1300cc, 1500cc and 1600cc engines from 1963 to 1969 and all Type 4 1700cc and 1800cc engines and Porsche 914 2000cc engines.

Oil pressure piston for use on all baywindow Buses with Type 4 2000cc engines from 1976 onwards and Type 25 (T3) Buses with aircooled 2000cc engines or Waterboxer 1900cc or 2100cc engines.

0.5mm oversized replacement Oil pressure relief piston for use on all Dual Relief cases from 1970 onward and all 1200cc single relief cases from 1961 to 1969.