2015-2021 Subaru STI Fueling

The IAG Performance V3 Street Series Air / Oil separator (AOS) is an excellent investment to keep your Subaru vehicle running well. The Street Seri...

This kit is designed to provide a way to data log and monitor the ethanol content of fuel on most new Subaru Vehicles. Our proprietary controller r...

Here are the details: 1050Xcc Injector model Compact body Improved internal flow path increases output by 5% without sacrificing low flow performan...

AEM's 340lph E85-Compatible High Flow In-Tank Fuel Pumps feature robust internal construction that is designed to withstand the low lubricity chara...

1300cc injector size Top-feed type Designed in partnership with Bosch Motorsport Designed to work with alternative fuels All stainless internals C...

This is the factory spark plug as installed in the 2018 Subaru WRX STI Type RA and 2019 Subaru WRX STI. The main differences are a heat range tha...

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results...

EMISSIONS This part is in the process of external testing with the EO process ongoing. NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY EMISSION C...

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results...

EMISSIONS 50 State Legal. This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the ...

EMISSIONS 50 State Legal. This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the ...

The IAG Performance PTFE Engine Bay Flex Fuel Kit for the 2008-21 Subaru STI combines our popular PTFE Flex Fuel Line kit with IAG Top Feed Fuel Ra...

AEM’s 340LPH E85-Compatible High Flow In-Tank Fuel Pumps feature robust internal construction that is designed to withstand the low lubricity chara...

AEM’s 340LPH E85-Compatible High Flow In-Tank Fuel Pumps feature robust internal construction that is designed to withstand the low lubricity chara...

These are the Injector Dynamics 1750cc Fuel Injectors and are an excellent option for the 2002-2014 Subaru WRX and 2007-2021 STI that needs to supp...

NGK single iridium plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consis...

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results...

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results...

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results...

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results...

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing ...

Reference the chart below to be sure the proper fuel rails are ordered.Manufactured with a large internal bore, the fuel rails can support all nece...

The Radium Engineering fuel line retaining kit supports large aftermarket fuel lines under the 08-21 Subaru Impreza, WRX, and STi.The retainers are...

PORTS AND FITTINGS The fuel rail end ports are tapped for 10AN ORB. The top ports are tapped for 8AN ORB.   Appropriate fittings must be selected b...

The IAG PTFE Engine Bay Fuel Kit for the 2008-21 Subaru STI combines our popular PTFE Fuel Line kit with our IAG Top Feed Fuel Rails and the Aeromo...

The IAG Performance PTFE Engine Bay Flex Fuel Kit for the 2008-21 Subaru STI combines our popular PTFE Flex Fuel Line kit with IAG Top Feed Fuel Ra...

The IAG Performance PTFE Engine Bay Flex Fuel Kit for the 2008-21 Subaru STI combines our popular PTFE Flex Fuel Line kit with IAG Top Feed Fuel Ra...

Here, you are looking at the Injector Dynamics ID2600-XDS Fuel Injectors. These have been designed to provide your fuel system with optimal flow, a...

THE AEM WATER/METHANOL INJECTION SYSTEM ADVANTAGEWater/methanol injection for forced induction (turbocharged or supercharged) gas-powered race engi...

AEM's High Cap Universal Adjustable Fuel Pressure Regulator (PN 25-305BK) is the perfect solution for racers who need reliable fuel pressure in hig...