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  See more parts for Subaru WRX STI
Select the year of your Subaru WRX STI:
Extreme Turbo Systems Stock MAF 3" Turbo Kit Air Filter Subaru STI 2004+ - SP-3860

If you're looking to keep your 2004-2021 Subaru STI breathing easy, this air filter is a solid pick. It’s designed specifically for the SP-3860 Extreme Turbo Systems Stock MAF 3" Turbo Kit, so you know it’s going to fit right without any fuss. Just pick your intake setup—either Speed Density or Stock MAF—and you're good to go.

Fitments:

  • Subaru STI 2004-2024

This filter isn’t just about fitting in; it’s built to help your turbo kit do its thing. With a solid design that keeps airflow smooth, you can expect better throttle response and a bit more power on tap. It's a straightforward upgrade that makes a difference, especially if you're pushing your STI to its limits. Plus, it’s easy to swap out, so you can spend less time in the garage and more time on the road.

So, if you want to keep your STI running clean and efficient, grab this air filter. It’s a no-brainer for anyone serious about their ride.

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle Make/Model
Subaru WRX STI 2013-2014, 2017-2021 Sport-tech
Subaru WRX STI 2013-2021 Base
Subaru WRX STI 2014 Tsurugi Edition
Subaru WRX STI 2015 Launch Edition
Subaru WRX STI 2015-2021 Limited
Subaru WRX STI 2016 Series.HyperBlue
Subaru WRX STI 2017-2021 Sport
Subaru WRX STI 2018 Type RA
Subaru WRX STI 2018-2021 STI
Subaru WRX STI 2019 S209
Subaru WRX STI 2020 Kanrai Edition
Extreme Turbo Systems - Your source for high quality performance that are manufactured in the USA. We build performance parts for GTR, Supra, Evolution 8/9, Evolution X, WRX, STI, Porsche 911/996/997, BMW 135i and 335i as well as custom intercoolers.
No warranty whatsoever will be given if the defect was caused by customers' abuse, negligence, mishandling, or improper installation. All merchandise sold by Extreme Turbo Systems is only subject to manufacturer warranty, if any. Warranty items are subject to submission to the manufacturers for inspection and approval for repair or replacement of merchandise. Customer, however, will be responsible for all shipping and handling fees. No labor or inconvenience may be included in any warranty claims. There is no warranty on lights, light bulbs, decals, electrical parts, and engine parts. Check your state and local laws regarding the use on any parts.

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