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The Street Series AOS works with the OEM PCV system and boosts its capacity
enlarging and blending the opening under the valves
GSC S2 Camshafts are available with OEM valve lifter buckets
If your engine has suffered a catastrophic failure which requires replacement of your cylinder heads
*For 02-05 Subarus with a cable-actuated throttle body
IAG 800 FA20 DIT Closed Deck Long Block Engine w/ IAG 800 Heads for 2015-21 Subaru WRX Install Kit::NONE The Street Series AOS worksLEAD TIME 4 6WEEKS IAG 800 FA20F DIT TIMED LONG BLOCK FOR 2015 2021 WRX A "DROP IN" SOLUTION The IAG Performance Hand Built 800 Subaru FA20F (DIT) is a great choice for those looking to get more out of their modified WRX. Each Long Block Package is a complete, valve cover to valve cover, timed, crate engine. These engines offer significant ease of installation for customers seeking a complete "drop in" engine package for their 2015+ Subaru WRX. The
