Turn In Concepts Stage 2+2 Street Short Block Subaru WRX 2002-2014 / STI 2004-2021 | 1001-03-0102 built-to-order-no-cancel The main difference is that

The main difference is that an AOS system returns collected oil back into the oil pan so there is no servicing required

If you have a 2003 WRX

Also features T2024 spacers and buckles for strength/lightweight and QA1 65deg hi-misalignment bearings to prevent tie rod end binding on lowered cars

-Ultra light weight of 3lbs

Tuning Required

Turn In Concepts Stage 2+2 Street Short Block Subaru WRX 2002-2014 / STI 2004-2021 | 1001-03-0102 built-to-order-no-cancel The main difference is thatPart #: 1001 03 0102 eta is 3 4 weeks On this page, you're looking at the Turn In Concepts Stage 2+2 Street Short Block for your 2002 2014 Subaru WRX and 2004 2021 STI. New Subaru EJ257 case halves New Subaru EJ257 crank +2mm H beam rods with ARP2000 hardware JE 99. 5mm Subaru Time Attack "FSR" pistons ACL main and rod bearings Ring gaps based upon TiC's many years of Subaru engine experience Main and rod bearing clearances based upon TiC's many years