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Cold Air Intake for 2018-2021 STI

$437.00 $371.45

  • SKU: PSP-INT-326RD
  • In Stock

Cold Air Intake for 2018-2021 STI

$437.00 $371.45

  • SKU: PSP-INT-326RD
  • In Stock
Color -Red
Qty
Add to Cart

Overview

Increase horsepower and style under your hood. The PERRIN Cold Air Intake (CAI) system uses proper MAF alignment and tubing size, which are crucial for maintaining safe air-fuel ratios and preventing knock and check engine lights that plague competitors.

Jump To

Power

Add 15-30 WHP to your car! Actual horsepower values will vary depending on other installed hardware, tunes, and the overall condition of your vehicle.

No Tuning Required

This part is designed and tested to work safely on your stock vehicle (aftermarket catback and intercooler are also ok) without any ECU recalibrating required. If any other parts are installed beyond these listed, or you are using any Cobb AccesssPORT Off-The-Shelf (OTS) tunes, a custom ECU calibration specifically for our intake is REQUIRED. Contact [email protected] for more info.

Precision Construction

Our intakes are constructed from aluminum tubing, which is precision CNC mandrel bent, for consistent and perfectly fitting parts. Our MAF sensor bung is CNC machined for perfect fit and alignment of MAF sensor to intake. This is crucial for proper air-fuel ratios and ECU engine management.

Filter Tech

PERRIN Intake filter elements use open-cell foam to capture dust and dirt. Washable and reusable, PERRIN foam filter elements can last the life of your vehicle. Foam filter elements offer superior performance with minimal airflow restriction and amazing dust-holding capacity.

Clean and Protect

Remove months of oil and grime by spraying on this easy-to-use cleaner. Let it sit on the filter element for a few moments and rise in the sink. Once your filter is dry, spray on a fresh coat of oil and you are ready to go.

Air Straightener

The airflow straightener improves MAF readings by forcing incoming airflow into a uniform profile. Smooth and predictable airflow is the key to good, consistent MAF sensor readings for reliable horsepower gains.

Sound

Under everyday driving conditions, the PERRIN Cold Air Intake sounds nearly stock. However, when the engine is put to the test, the intake comes to life, unlocking the sound of your turbo flat-4 and blow-off valve.

Finish

Powder coated for protection from the elements, the glossy neon yellow or hyper pink will accent your show car, while the classic textured red and black finish will look awesome for years to come!

Product Details

  • Material CNC Mandrel Bent Aluminum
  • Finish Powder Coat
  • Filter Tye Foam

(1) PERRIN Cold Air Intake Tube
(1) PERRIN Foam Filter
(1) PERRIN Intake Mounting Bracket
(1) PERRIN License Plate Frame
All Necessary Hardware for Installation
Warranty & Instructions

  • 2018 Subaru STI
  • 2019 Subaru STI
  • 2020 Subaru STI
  • 2021 Subaru STI
5 Year Warranty

PERRIN Performance warrants to the original purchaser that all PERRIN products will be free from defects in material and workmanship within a sixty (60) month period from the date of purchase. *Some exclusions apply

Proposition 65

warning.pngWARNING: Cancer and Reproductive Harm
www.P65Warnings.ca.gov

Off Road Use Only

This product is legal in California only for racing vehicles which may never be used upon a highway. Check your local and federal laws prior to installation.

Email Our Tech Department: [email protected]
Download Instructions
Gallery

Installation Gallery

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Cold Air Intake for 2018-2021 STI
$371.45
  • SKU: PSP-INT-326RD
  • In Stock
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