Cosworth Subaru EJ20 and EJ20 Dry Sump Kit

Cosworth Subaru EJ20 and EJ20 Dry Sump Kit

With over 50 years of heritage and world class F1 championship winning technology, Cosworth has unrivalled racing engine experience.

Cosworth brings this experience into their Subaru EJ20 and EJ25 dry sump system which is a must for performance and race applications. Dry sump oiling systems offer an unparralleld level of safety and reliability compared to factory wet sump systems. Complete crank case scavenging reduces excessive and residual oil that causes blow-by and power loss. A dry sump system also offers more consistent oil pressure to the engine, improving scavenging, and increased ring seal due to pan vacuum, There is also a power gain due to reduced crankshaft windage.

The Cosworth Subaru EJ20 and EJ25 dry sump system replaces the original oil sump pan with a machined from solid, low profile alloy pan with twin scavenge ports, internal baffling and o-ring sealing. A two stage scavenge pump driven by HTD belt, mounted to a heavy duty bracket evacuates the oil from the engine.

The dry sump system includes:

  • Sump machined from solid billet
  • 2-stage scavenge pump
  • Pump mounting bracket/manifold
  • 34T pump drive pulley
  • Cranshaft drive adaptor assembly
  • HTD drive belt
  • Fittings and hardware

Other parts required:

  • Oil tank
  • Hoses and couplings
  • 2004-2007 Subaru STI alternator bracket
  • Cosworth high volume/high pressure oil pump

The Cosworth dry sump kit can be seen here

Our full range of Subaru high performance engine components can be seen here