IAG Stage 1 FA20 DIT Subaru Short Block for 2015-20 WRX

The IAG Stage 1 short block starts with new Subaru FA 2.0L engine case halves that are machined for improved oiling. Then the case is bored and honed to 86.1mm on our in-house Sunnen SV-30 the most advanced automotive cylinder hone available. IAG's in-house honing process is able to set piston to wall clearances tighter for a quieter running engine. The short block is measured and assembled using a new 2015-20 Subaru 2.0L WRX crankshaft that is matched to King main bearings. IAG-Spec H-Beam rods with ARP2000 rod bolts are utilized along with King or ACL rod bearings. The case halves are sealed with new OEM case bolts and sealant. Finally, IAG-Spec 86.1mm Forged Pistons are spec'd and installed along with an OEM oil plug finishing off the short block.

Stage 1 FA20 Includes:

• Case Halves -Brand new OEM Subaru FA20 case halves
• Case Machining - Modified for improved oiling
• Case Machining - Bored and honed to 86.1mm
• Pistons -IAG-Spec 86.1mm Forged Pistons, Ring Set, and .150" x 2.250" Chromoly Wrist Pins
• Connecting Rods -IAG-Spec H-Beam with ARP2000 Rod Bolts
• Rod Bearings -ACL or King XPG
• Main Bearings - King XPG
• Crankshaft -New Subaru FA20 DIT WRX crankshaft
• Case / Main Bolts -Standard Subaru case bolts
• Hardware - OEM Oil Plug - preinstalled at inner oil pan location