2015-2021 STI Engine

Replace the ugly OEM plastic dipstick handle with the PERRIN Dipstick Handle. Made from CNC machined aluminum and featuring a black, blue, pink, ne...

Replace the ugly OEM plastic dipstick handle with the PERRIN Dipstick Handle. Made from CNC machined aluminum and featuring a black, blue, pink, ne...

Enhance the top of your engine with the stylish aluminum PERRIN Belt Cover! This pulley cover is a direct replacement of the OEM plastic pulley cov...

The Perrin 15-21 WRX/STI Radiator Shroud (Without OEM Intake Scoop) - Neon Yellow arrives with a powder-coated multi-piece design for easy bolt-on ...

The Perrin 15-21 WRX/STI Radiator Shroud (Without OEM Intake Scoop) - Hyper Pink arrives with a powder-coated multi-piece design for easy bolt-on i...

This Red crank pulley from Perrin has been precisely designed to reduce rotational mass for rapid revs, better throttle response, and improved perf...

This Perrin crank pulley has been optimized to reduce engine rotational mass, promoting faster revs and enhanced response while maximizing engine p...

Accent the top of your engine with this stylish PERRIN Pulley Cover. Crafted from durable 5052 plate aluminum, it features precision-drilled mounti...

This PERRIN Alternator Pulley boasts a light weight of only .116lbs, lighter than an OEM alternator pulley, and matches our signature Crank Pulley ...

Constructed from high-quality materials, the PERRIN Alternator Pulley mimics the signature Crank Pulley design while reducing rotational weight. At...

Constructed from high-quality materials, the PERRIN Alternator Pulley mimics the signature Crank Pulley design while reducing rotational weight. At...

Perrin 15-21 WRX/STI Radiator Shroud (With OEM Intake Scoop) - Neon Yellow is designed with two-piece aluminum construction and powder-coated in a...

Perrin Subaru Black Pulley Cover

The Perrin 15-21 WRX/STI Radiator Shroud - Red is constructed from aluminum and boasts a red powder coat finish. It comes with all the necessary ha...

Perrin Radiator Shroud (With OEM Intake Scoop) - Hyper Pink for 2015-2021 WRX/STI enables improved cooling performance with an easy installation pr...

Perrin 15-21 WRX/STI Radiator Shroud (Without OEM Intake Scoop) - Black offers improved cooling efficiency and a stylish addition to the engine bay...

Perrin 15-21 WRX/STI Radiator Shroud (With OEM Intake Scoop) - Black boosts cooling capability and adds a visual appeal to the engine bay.

Dress up the top of your engine and pulleys with this stylish cover by PERRIN. Choose either red or black to add a bit of flair to your engine bay....

Add a consistent 10+ wheel horsepower with the largest Top Mounted Intercooler on the market! We pushed every dimension to make this the best TMIC ...

The core of an intercooler system plays a critical role in cooling the air on its journey to the engine. The factory Subaru tube and fin intercoole...

Here at Mishimoto, we've decided to expand our line of 2015 STI products. Designed for applications that demand the greatest airflow and cooling ca...