IAG 550 Long Block Engine w/ IAG 550 Heads for 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT Long Block: Required:2018+ STI RA 2019+ STI & S209 - PN# IAG-ENG-L550N helps ensure that it does

helps ensure that it does not fatigue and fail over time like an OEM unit

Integrated hinges

thus making Seibon Carbon the preferred brand among professional drivers

IAG 550 Cylinder Heads:

IAG 550 Long Block Engine w/ IAG 550 Heads for 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT Long Block: Required:2018+ STI RA 2019+ STI & S209 - PN# IAG-ENG-L550N helps ensure that it doesLEAD TIME 4 6WEEKS IAG 550 LONG BLOCK ENGINE WITH IAG 550 HEADS FOR 02 14 WRX, 04 21 STI, 04 13 FXT, 05 09 LGT A "DROP IN" SOLUTION The IAG Performance Hand Built 550 Subaru EJ25 Long Block Packages are a complete, valve cover to valve cover, crate engine. These long block engines offer significant ease of installation for customers seeking a complete "drop in" engine package for their Subaru WRX, STI, Forester XT or Legacy GT. The Long Blocks feature