Subaru STI Engine Parts

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

Dress up your engine bay while preventing leaks and spills from your master cylinder reservoir with the PERRIN Brake Reservoir Cozy.  Easy Installa...

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

Adjustable relief pressure and flow control makes fine-tuning on the fly simple and quick with the PERRIN BOV/BPV. HIGH FLOW With large 1.225" inle...

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

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

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

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...

Perrin Engine Mount Kit 2002-2021 WRX/STI OVERVIEW PERRIN Engine Mounts reduce motor movements, efficiently transmit motor power and give drivers ...

SPECS: Capable of adding 15-30 WHP depending on tune and supporting modifications Intakes are constructed from aluminum tubing which is precision ...

The PERRIN High Flow Washable Replacement Air Filter is the last filter you will ever need to buy. Not only is it washable, but it will increase ho...

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 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...

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

SPECS: Capable of adding 15-30 WHP depending on tune and supporting modifications Intakes are constructed from aluminum tubing which is precision ...

DESCRIPTION The Perrin Battery Tie Down is a quick and affordable upgrade for your Subaru. Batteries are essential for many of your vehicles functi...

DESCRIPTION The Perrin Battery Tie Down is a quick and affordable upgrade for your Subaru. Batteries are essential for many of your vehicles functi...

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

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...

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...

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

Don't leave your turbo uncovered! Protect your intercooler from radiant heat from your turbo with the PERRIN Turbo Heat Shield!

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 Battery Tie Down is a quick and affordable upgrade for your Subaru. Batteries are essential for many of your vehicles functi...

DESCRIPTION The Perrin Battery Tie Down is a quick and affordable upgrade for your Subaru. Batteries are essential for many of your vehicles functi...

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

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...

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 ...

The OEM Subaru pitch stop brackets fail over time. Help prevent this failure with the PERRIN Pitch Stop Brace.  THE PROBLEM WITH THE OEM PITCH STO...

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

SPECS: Capable of adding 15-30 WHP depending on tune and supporting modifications Intakes are constructed from aluminum tubing which is precision ...