Subaru STI Engine Parts

DESCRIPTION The Perrin Air Oil Separator is not a catch can. Catch cans capture engine blow-by and stores it in a container, which requires constan...

DESCRIPTION The Perrin Coolant Overflow Tank for the 2002+ Subaru WRX and 2004–2021 STI is a premium upgrade that replaces the factory plastic tank...

COMPLETE THE LOOK Matching Perrin's signature pulley cover design, the angled cutouts look great while concealing the factory fender gap.  DESIGN P...

Replace the ugly yellow plastic OEM oil fill cap with the sexy billet aluminum PERRIN Oil Fill Cap! Complete Your Engine Bay The Perrin Aluminum O...

The PERRIN Radiator Shroud caps the top of the radiator for a sleek, clean, and accented new look. DESIGN Dress up the top of your radiator with t...

The PERRIN Electronic Boost Control Solenoid (EBCS) Pro is designed to control today's high performance turbochargers with its ultra-fast response ...

Performance During cornering, the Perrin Strut Tower Brace improves chassis rigidity, enhances steering precision under high load conditions, and r...

Increase horsepower and add under-hood style with the PERRIN Cold Air Intake. It features correct MAF alignment and tubing size to maintain proper ...

Replacement Intercooler and Bumper Beam for the PERRIN Front Mount Intercooler Kits!

The PERRIN Air Oil Separator removes oil vapors from crankcase gases before they reach the intake manifold. Its ceramic-coated, CNC-machined design...

Increase horsepower and add under-hood style with the PERRIN Cold Air Intake. It features correct MAF alignment and tubing size to maintain proper ...

Increase horsepower and add under-hood style with the PERRIN Cold Air Intake. It features correct MAF alignment and tubing size to maintain proper ...

Increase horsepower and add under-hood style with the PERRIN Cold Air Intake. It features correct MAF alignment and tubing size to maintain proper ...

Increase horsepower and add under-hood style with the PERRIN Cold Air Intake. It features correct MAF alignment and tubing size to maintain proper ...

The PERRIN Master Cylinder Brace prevents unwanted movement of the master cylinder, allowing for increased brake pedal stiffness and response. REDU...

Why You Want It The PERRIN Turbo Inlet Hose, made with advanced silicone technology, outperforms the OEM part with a smoother, larger interior for...

DESCRIPTION Under hard acceleration, the drivetrain is being twisted front-to-back from the front axle torque twist. To control this front-to-back ...

DESCRIPTION Under hard acceleration, the drivetrain is being twisted front-to-back from the front axle torque twist. To control this front-to-back ...

DESCRIPTION Under hard acceleration, the drivetrain is being twisted front-to-back from the front axle torque twist. To control this front-to-back ...

DESCRIPTION Under hard acceleration, the drivetrain is being twisted front-to-back from the front axle torque twist. To control this front-to-back ...

The PERRIN Standard Intercooler Core measures 28” long x 9.25” tall x 3.5” deep, with a total volume of 906.5 cu-in. It's a versatile choice that d...

DESCRIPTION The pinch weld jack points are easily bent and damaged during routine tasks like tire changes and car maintaince. This damage occurs fr...

DESCRIPTION The Perrin Coolant Overflow Tank for the 2002+ Subaru WRX and 2004–2021 STI is a premium upgrade that replaces the factory plastic tank...

DESCRIPTION The Perrin Coolant Overflow Tank for the 2002+ Subaru WRX and 2004–2021 STI is a premium upgrade that replaces the factory plastic tank...

DESCRIPTION The Perrin TMIC is 12% larger than the nearest competitor's core. The large core means less restriction and better cooling capabilities...

Replace the ugly yellow plastic OEM oil fill cap with the sexy billet aluminum PERRIN Oil Fill Cap! Complete Your Engine Bay The Perrin Aluminum O...

PERRIN Front Mount Intercooler Kits are ideal for those who want to get the most out of their turbocharged Subaru. Add power and a bold new look al...

Increase horsepower and add under-hood style with the PERRIN Cold Air Intake. It features correct MAF alignment and tubing size to maintain proper ...

The PERRIN Turbo Inlet Hose has a smooth interior and larger diameter than the OEM hose, increasing airflow. Removing OEM pleats boosts horsepower,...