IAG Performance

The IAG Street Series Oil Pan for the Subaru WRX and STI is uniquely designed and CNC machined to suit a wide range of street and track applications. About Street Series EJ Oil Pan The cast aluminum...

The IAG Street Series Oil Pan for the Subaru WRX and STI is uniquely designed and CNC machined to suit a wide range of street and track applications. About Street Series EJ Oil Pan The cast aluminum...

The IAG Competition Series Oil Pan for the Subaru WRX and STI is uniquely designed and CNC machined to suit a wide range of street and track applications. About Competition Series EJ Oil Pan The cast...

The IAG Competition Series Oil Pan for the Subaru WRX and STI is uniquely designed and CNC machined to suit a wide range of street and track applications. About Competition Series EJ Oil Pan The cast...

IAG offers our V2 Oil Pickup, Street Series Baffle and Windage Tray combined with our New Oil Pan as a complete package. About Street Series EJ Oil Pan The IAG Street Series Oil Pan for the Subaru...

IAG offers our V2 Oil Pickup, Street Series Baffle and Windage Tray combined with our New Oil Pan coated with a black finish as a complete package. About Street Series EJ Oil Pan The IAG Street...

IAG offers our V2 Oil Pickup, Competition Series Baffle and Windage Tray combined with our New Oil Pan as a complete package. About Competition Series EJ Oil Pan The IAG Competition Series Oil Pan...

IAG offers our V2 Oil Pickup, Competition Series Baffle and Windage Tray combined with our New Oil Pan finished in black as a complete package. About Competition Series EJ Oil Pan The IAG Competition...

IAG 500 EJ25 Long Block Engine with Stage 1 Heads: The IAG Performance Hand-Built 500 Subaru EJ25 Long Block Packages are a complete, valve cover to valve cover, crate engine. These engines offer...

IAG 600 EJ25 Long Block Engine w/ Stage 2 Heads: The IAG Performance Hand-Built Subaru EJ25 Long Block Engine Packages are a complete, valve cover to valve cover, crate engine. These engines offer...

IAG 700 EJ25 Closed Deck Long Block w/ Stage 3 Heads: The IAG Performance Hand-Built Subaru EJ25 Closed Deck Long Block Engine Packages are a complete, valve cover to valve cover, crate engine. These...

IAG 900 EJ25 Closed Deck Long Block w/ Stage 4 Heads: The IAG Performance Hand-Built Subaru EJ25 Closed Deck Long Block Engine Packages are a complete, valve cover to valve cover, crate engine. These...

IAG Stage 1 Short Block The IAG Stage 1 Short Block is perfect for lightly modified EJ25 Subaru's that need a basic and reliable performance short block. Subaru turbo engines are commonly known for...

IAG 1000+ EJ25 Closed Deck Long Block w/ Stage 5 Heads: The IAG Performance Hand-Built Subaru EJ25 Closed Deck Long Block Engine Packages are a complete, valve cover to valve cover, crate engine...

IAG's Equal Length Headers are the perfect way to add more performance to your Subaru WRX STI. By implementing a 4-2-1 configuration with equal-length tubing and merged collector, IAG is able to...

IAG offers our Version 2 Oil Pickup, Baffle and Windage Tray as a complete package and even better at a reduced price instead of buying the items separately. About IAG Oil Pickup:The IAG Performance...

The IAG Unequal Length Headers are the perfect way to add more performance to your Subaru WRX STI and still keep the iconic "Boxer Rumble." The headers are fully constructed of 304 stainless steel,...

IAG Stage 2 Short Block The IAG Stage 2 Short Block is designed for modified EJ25 Subaru's that need a beefed-up performance short block. The IAG Stage 2 short block builds off the Stage 1's...

The IAG Oil Control Baffle and Windage Tray System is designed to limit potential blow-by and prevent oil starvation in your Subaru's WRX / STI EJ engine during high rpm and high g-force driving...

The IAG Windage Tray is designed to limit potential blow-by in your Subaru's WRX / STI EJ engine during high rpm driving. The job of the windage tray is to help direct oil from the upper crankcase...

IAG Stage 2 Tuff Short Block The IAG Stage 2 Tuff short block starts with new Subaru 2.5L EJ25 engine case halves that are bored and honed to 99.75 on our in-house Sunnen SV-30 the most advanced...

The IAG Performance Version 2 Subaru WRX / STI oil pickup replaces the OEM EJ25 oil pickup which is prone to failure. It's a well-known fact that the OEM oil pickups often crack and fail which in...

IAG Stage 2.5 Subaru EJ25 Closed Deck Short Block The IAG Stage 2.5 Short Block starts with brand new Subaru 2.5L engine case halves. IAG machines the case halves assembled together in our Haas...

IAG Trojan Subaru EJ25 Closed Deck Short Block The IAG Trojan Short Block starts with brand new Subaru 2.5L engine case halves. IAG machines the case halves assembled together in our Haas VF-4SS CNC...

IAG Magnum Subaru EJ25 Closed Deck Short Block The IAG Magnum Short Block starts with brand new Subaru 2.5L engine case halves. IAG machines the case halves assembled together in our Haas VF-4SS CNC...

The IAG oil pickup spacer kit is required when utilizing an IAG V1 Oil Pickup (Part number IAG-ENG-2081) in combination with a Killer B Oil Pan. The spacer set includes all the necessary hardware and...

IAG Stage 3 Extreme Subaru EJ25 Closed Deck Short BlockThe IAG Stage 3 Extreme Short Block starts with brand new Subaru 2.5L engine case halves. IAG machines the case halves assembled together in our...

IAG Stage 4 Tuff Subaru EJ25 Closed Deck Short Block The IAG Stage 4 Tuff Short Block starts with brand new Subaru 2.5L engine case halves. IAG machines the case halves assembled together in our Haas...

IAG Stage 4 Extreme Closed Deck EJ25 Subaru Short BlockThe IAG Stage 4 Extreme Short Block starts with brand new Subaru 2.5L EJ25 engine case halves. The case halves are split and the main webs are...

IAG / Willall Stage X Billet Aluminum EJ25 Subaru Short Block Using the same world-leading technology found in Willall's incredible billet GT-R block, the billet EJ case seeks to change the Subaru...