These are the same machined aluminum injector seats used in many Radium Engineering fuel rails. They are required when converting the OEM fuel injector to aftermarket fuel injectors. They simply press-fit into the intake manifold/TGV injector ports with no modifications required.
Subaru WRX/Sti 1994-2007- All Model Stainless Steel 3 Inch Turbo Dump Pipe With High Flow Metallic Cat & Tuning Pipe
Subaru WRX/Sti94-07 - 3 Inch Catback System
Subaru WRX 1994-2007 Stainless Steel 3 Inch Cat-Back System With Straight-Out Cannon Muffler
Subaru WRX 2015-2018 Sedan Stainless Steel 3 Inch Turbo Dump Pipe With High Flow Metallic Cat & Tuning Pipe
Subaru WRX 2011-Current/Sti 2008-Current Hatch Back Stainless Steel 3" High Flow Cat-Back System
Subaru WRX Hatch-Back 2008-2011 3 Inch Cat-Back System With Single Tip Non-Polished Stainless Steel
Subaru WRX Sedan 2009-2011 Stainless Steel 3 Inch High Flow Cat-Back System With Varex Mufflers
Subaru WRX Stainless Steel 3 Inch Cat-Back System With Oval Mufflers With Twin Tips
Subaru WRX/Sti Sedan 2011-On Stainless Steel 3 Inch High Flow Cat-Back System With Varex Rear Mufflers
Subaru WRX/Sti Sedan 2015+ Stainless Steel 3 Inch High Flow Cat-Back System (New Louder Update)
Subaru WRX/Sti Sedan 2015+ Stainless Steel 3 Inch High Flow Cat-Back System With Varex Rear Mufflers (New Louder Update)
Tip 2.25x3.25" Oval Rolled in Single Wall 4.25" Long Knock on Tip
Tip 2.5" Round In Single Wall Tip 4.5" Long
TM012SR - Hyper Multi Twin Hyper Series - EXEDY