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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
The factory Subaru EJ25 case is referred to as a semi-open (or semi-closed) deck
IAG offers a simple comprehensive cover and seal kit that includes (1) Rear main seal and (3) OEM Oil Plugs
The ported head package starts with brand new WRX STI W25 head castings directly from Subaru of America
ARP case bolts are installed and torqued before line honing the completed case in our in-house Sunnen CH-100 machine
Each IAG Stage 2 Short Block starts with new Subaru 2
Stage 1 Cylinder Head Pkg w/ GSC S1 Cams for 02-05 WRX w/Chamber Mod S20 Casting 2016-subaru-wrx sti-limited The factory Subaru EJ25 caseIAG Stage 1 Cylinder Head Package with GSC Stage 1 Cams: IAG's Stage 1 cylinder heads are intended for those looking for a cost effective OEM+ replacement. Each package starts with brand new WRX S20 OEM head castings, directly from Subaru of America. The bare castings are visually inspected and then fixtured into our in house Centroid 5 axis CNC Machine. This is one of the most advanced pieces of precision engine machining equipment in the world. In
