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DESCRIPTION The Mishimoto 2015-2021 Subaru WRX Performance Aluminum Radiator is designed and engineered to reduce coolant temperatures by -202120 D...

DESCRIPTION The Mishimoto Street Performance Intercooler takes the place of the stock unit and is specifically designed for use on the stock tune u...

DESCRIPTION Upgrade your cooling system with the Mishimoto Aluminum Coolant Expansion Tank for the 2002-2007 Subaru WRX and 2004-2016 STI. Designed...

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 ...

DESCRIPTION The Stage 2 Power Package Includes the Accessport, Silver Top Mount Intercooler kit, Charge Pipe, High Flow Filter, Intake Tube an...

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

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...

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...

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...

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...

Conceal the ugly OEM covers with the PERRIN Cam Solenoid Covers. Made from CNC machined aluminum and anodized black, blue, neon yellow, or red to ...

Conceal the ugly OEM covers with the PERRIN Cam Solenoid Covers. Made from CNC machined aluminum and anodized black, blue, neon yellow, or red to ...

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

Replace the restrictive OEM plastic charge pipe to increase horsepower and boost response with the PERRIN Charge Pipe for 2015-2021 WRX!  NO TUNIN...

Increase horsepower and style under your hood. The PERRIN Cold Air Intake (CAI) system uses proper MAF alignment and tubing size, which are crucia...

WHY YOU WANT THIS In racing conditions engine oil temperature skyrockets. This causes decreased engine performance and reduces the oil's ability to...

Intercooler Construction The Perrin Intercooler Core is 28" long x 9.25" tall x 3.5" deep with a volume of 906.5 cu-in. which gives the Perrin Int...

Horsepower & Torque The number one reason to buy an intake is to add more power to your car. The PERRIN Cold Air Intake adds 10-20 wheel horsep...

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

Why You Want This In racing conditions engine oil temperature skyrockets. This causes decreased engine performance and reduces the oil's ability to...

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

No Tuning Required Increase horsepower and torque without ECU recalibration or tune! This part is designed and tested to work safely on your vehicl...

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!

Steel * Bolt on installation * Only for 6 Speed MT Protect Inner joint grease from high heat from muffler front pipe.

The flow of air is not only limited to the outside of a car. To maximize cooling capabilities, a radiator needs a direct flow of air to allow an en...

The flow of air is not only limited to the outside of a car. To maximize cooling capabilities, a radiator needs a direct flow of air to allow an en...

Dress-up the engine bay with carbon fiber, molded to precise dimensions that only pre-preg. materials can achieve.  These parts are exotic-looking,...

APR Performance Radiator Cooling Plate for 2022+ Subaru WRX The flow of air is not only limited to the outside of a car. To maximize cooling capabi...

DESCRIPTION CSF uses new technology packed into a compact two-row design for better cooling capacity without the added weight. More efficient B-t...