IAG Performance Windage Tray for 2002-14 Subaru WRX 04-20 STI 05-09 LGT 04-13 FXT. 2013-subaru-wrx sti-sport-tech When a powerful STI launches

When a powerful STI launches aggressively at the track the output shaft progressively twists and weakens

Radiused coolant and oil galleries for improved flow and less foaming/turbulence

The Magnum case is then drilled and tapped to accept 14mm head studs that combined with the IAG Fire-Lock head gasket set greatly reduces head gasket failure during high cylinder pressure scenarios

but maintain spool

IAG Performance Windage Tray for 2002-14 Subaru WRX 04-20 STI 05-09 LGT 04-13 FXT. 2013-subaru-wrx sti-sport-tech When a powerful STI launchesThe IAG Windage Tray is designed to limit potential blow by in your Subaru's WRX STI EJ engine during high rpm driving. The job of the windage tray is to help direct oil from the upper crankcase down into the lower crankcase and oil pan area. The precision formed louvers direct oil downwards and help to prevent oil that is draining from the cylinder heads in the lower crankcase area from sloshing upwards into the path of the crankshaft and connecting