Product images and videos 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.

Air and Fuel› Air Cleaners, Filters, Intakes and Components

Perrin Performance

Performance Intercooler Intake Hose

Name: Performance Intercooler Intake Hose
Brand: Perrin Performance
SKU: #PSP-ENG-606RD

$554.84

SKU: #PSP-ENG-606RD

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Easy — 1–2 hours

Overview

This process increases intercooler efficiency and reduces the potential for performance-robbing detonation.

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The Perrin Performance Air Oil Separator traps oil from crankcase vents before it can enter your intake system. By reducing the amount of oil deposited into your intercooler and intake, this AOS increases intercooler efficiency. As oil builds up in the intercooler, heat transfer becomes less efficient, leading to power loss and potential detonation. This system also helps reduce carbon buildup in the combustion chamber, intake valves, and intake tract. Crankcase blow-by, which contains oil, is recirculated back to the intake, but can accumulate over time. The PERRIN AOS helps manage this buildup, reducing wear and tear on valves and preventing power loss. Featuring swirl pot technology and multi-layer baffles, the AOS forces incoming air to circulate, separating oil from engine blow-by. Unlike catch cans that capture water and oil vapor, the PERRIN AOS separates engine oil and allows it to drain back into the engine. It utilizes a PCV system for proper crankcase venting during light loads and incorporates a coolant-heated base plate to minimize condensation and sludge buildup, reducing maintenance requirements. The kit includes application-specific mounting brackets and utilizes NPT threaded connections for customizable installations. This product is intended for off-road use only and is legal in California solely for racing vehicles not used on public highways. Always check local and federal laws prior to installation.

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-606RD
Category	Air and Fuel

Videos

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

Perrin Air Oil Separator Install

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

PERRIN AOS INSTALL GUIDE: 2015-2020 SUBARU WRX

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

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

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

Perrin Air Oil Separator - 2017 SUBARU FORESTER XT

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

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

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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

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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