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Air and Fuel› Superchargers, Turbochargers and Components

PERRIN Performance

Catch Can with Swirl Pot Technology

Name: Catch Can with Swirl Pot Technology
Brand: PERRIN Performance
SKU: PSP-ENG-607

$554.84

SKU: PSP-ENG-607

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$100 Minimum Order

Non-Returnable Item

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Easy — 1–2 hours

Overview

This component reduces carbon build-up and increases intercooler efficiency, which can help prevent performance-robbing detonation.

It features swirl pot technology and multi-layer baffles to separate oil from engine blow-by. The base plate is heated by coolant, preventing water condensation and sludge build-up, a common issue with catch cans. The unit includes CNC-machined, anodized aluminum fittings for durability and corrosion resistance, along with a custom-designed drain back fitting.

Show original supplier description

By reducing oil deposits, it helps minimize carbon buildup on intake valves and combustion chambers, leading to increased intercooler efficiency and a lower risk of engine-damaging detonation. Utilizing swirl pot technology and multi-layer baffles, the AOS effectively separates oil from blow-by gases. A key feature is its coolant-heated base plate, which maintains the AOS temperature close to that of the engine blow-by. This prevents water condensation and the formation of sludge, a common problem with traditional catch cans, ensuring consistent performance and longevity. This specific design enhances venting and reduces oil ingestion during high-G maneuvers common in boxer engines. Installation considerations: For 2001-2007 models with cable throttle and cruise control, the PSR cruise control relocation bracket (sold separately) is required. For 2008-2014 WRX and 2008-2021 STI vehicles, the factory bracket for the engine wiring harness plug must be removed; it can be cable-tied out of the way on 08-14 models or reinstalled on the OEM bracket (mounted upside down) for 15+ STI models. Available finishes include black, red, and neon yellow powder coating. The kit includes the PERRIN Air Oil Separator, a vehicle-specific bracket, necessary hardware, instructions, and stickers. Note: Some catch can/AOS kits may require additional hoses and fittings for installation in the new location.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	PERRIN Performance
Part Number	PSP-ENG-607
Category	Air and Fuel

Videos

PERRIN AOS INSTALL PART 1 OF 2 | 2015-2019 SUBARU WRX | AIR OIL SEPARATOR

PERRIN AOS INSTALL PART 2 OF 2 | 2015-2019 SUBARU WRX | AIR OIL SEPARATOR

2015 Subaru WRX STI - Perrin AOS - Part 1 - Installed and Overviewed - OCTurboJoe

2015 Subaru WRX STI - Perrin AOS - Part 3 - Hose Fitting Upgrade - OCTurboJoe

Perrin Air Oil Separator Install

2015 Subaru WRX STI - Perrin/Moroso AOS - Part 4 - Hybrid AOS - OCTurboJoe

WHATS INSIDE: PERRIN AOS/AIR OIL SERARATOR | ETS INTAKE CLEANING| 2015-2019 SUBARU WRX

2015 Subaru WRX STI - Perrin AOS - Part 2 - 3K Mile Intake Hose Inspection - OCTurboJoe

INSTALLATION | PERRIN | AIR OIL SEPARATOR SUBARU WRX 2022 | 2023 | 2024

Your STi Engine Needs These Mods! | Perrin Engine Dressup Install

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

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