Subaru Corporation Genuine Parts (683/683)

Roger Clark Motorsport (104/104)

Subaru Boxer Diesel (70/70)

Mishimoto™ - Aluminum Radiator, Performance Radiator, Intercooler Specialist (50/50)

Cosworth (33/33)

4turbo - inspired by competition (2/2)

ACL - Performance Engine Bearings (20/20)

AEM Performance Electronics (1/1)

Aeromotive, Inc – Serious Fuel Systems (1/1)

AMS Performance (4/4)

A'PEXi - Find your driving fun (1/1)

ARP - Automotive Racing Products (20/20)

Arrow Precision Engineering Ltd (1/1)

ATI Performance Products, Inc (1/1)

Blitz Co., Ltd. (1/1)

Borg Warner (1/1)

Bosch Motorsport (1/1)

Bridgeway (1/1)

Clevite Bearings (2/2)

Cobb Tuning (2/2)

Cometic Gasket. Inc. (3/3)

Company23 (5/5)

Continental Contitech (2/2)

CP Pistons (1/1)

CUSCO® Progressive Equipment (1/1)

Darton Sleeves (3/3)

Davies Craig - World's best auto cooling (4/4)

DeatschWerks, LLC (5/5)

DEI - Design Engineering, Inc.: Heat & Sound Insulation Products (14/14)

ETS - Extreme Turbo Systems (1/1)

Ferrea - Racing Engine Valves (4/4)

Fujitsubo Giken Kogyo (1/1)

Garrett - Turbo By Garrett (3/3)

HKS Co., Ltd. Performance Automotive Products (10/10)

IAG Performance (10/10)

IHI (8/8)

Injector Dynamics (4/4)

Invidia - Exhaust, Manifolds, Race Catalysts (11/11)

King Racing High Performance Bearings (3/3)

Mahle Performance (1/1)

Manley Performance (27/27)

MG Motorsport (3/3)

Mitsubishi Turbocharger (2/2)

Mitsuboshi (1/1)

NGK Spark Plug (4/4)

Outfront Motorsports Inc. (1/1)

Perrin Performance (1/1)

Samco Sport (27/27)

STI - Subaru Tecnica International (13/13)

TiAL Sport (3/3)

Turbosmart - Manufacturer of turbo performance products (11/11)

Walbro (2/2)

Wiseco Manufactures High Performance Forged Pistons (1/1)