Perrin Air Oil Separator Black 2022-2025 WRX | Ceramic-Coated CNC Machined | Engine Health & Oil Vapor Separation

Overview

The Perrin Air Oil Separator (AOS) is designed specifically for the 2022-2025 Subaru WRX to effectively remove oil vapors from crankcase gases before they enter the intake manifold. By separating these oil vapors, the AOS helps reduce carbon buildup on intake valves and maintains cleaner combustion chambers, which is critical for direct-injection engines like the WRX. This part is ideal for Subaru enthusiasts looking to improve engine longevity and maintain peak performance.

Engineered with precision, the Perrin AOS features a ceramic-coated, CNC-machined aluminum housing that ensures durability and resistance to corrosion. The ceramic coating not only enhances longevity but also aids in heat dissipation, contributing to more efficient vapor separation. Perrin’s commitment to quality and fitment ensures this AOS integrates seamlessly with the WRX’s factory PCV system without requiring modifications.

For Subaru owners, this Air Oil Separator offers tangible benefits by reducing oil contamination in the intake tract, which can lead to smoother idle, improved throttle response, and reduced maintenance intervals related to carbon cleaning. Maintaining a cleaner intake environment supports the WRX’s turbocharged engine health, especially under spirited driving or track conditions where blow-by gases increase.

Features & Specifications

This Perrin Air Oil Separator is engineered for the 2022-2025 Subaru WRX and features a ceramic-coated, CNC-machined aluminum construction. Designed to improve engine health by reducing oil vapor contamination, it delivers reliable separation performance for Subaru enthusiasts seeking to maintain clean intake systems and optimize engine longevity.

• Brand: Perrin Performance
• Product: Air Oil Separator Black 2022-2025 WRX
• Part Number: PSP-ENG-622BK
• Fitment: 2022-2026 Subaru WRX
• Material: CNC-machined aluminum
• Finish: Black ceramic coating
• Construction: CNC machined, ceramic coated
• Origin: Made in USA

Key Benefits

• Engine Health: Reduces oil vapor contamination in intake manifold, minimizing carbon buildup on intake valves.
• Durability: Ceramic-coated aluminum housing resists corrosion and withstands heat for long-lasting performance.
• Fitment: Direct bolt-on design ensures seamless integration with the 2022-2025 WRX PCV system without modifications.
• Performance: Maintains cleaner intake air for improved throttle response and smoother idle characteristics.
• Maintenance: Helps extend intervals between intake cleaning and valve maintenance, saving time and cost.

What's Included

• 1× Perrin Air Oil Separator Black 2022-2025 WRX
• Mounting hardware
• Installation instructions

Installation & Compatibility

Installation of the Perrin Air Oil Separator is straightforward and designed for bolt-on fitment with the factory PCV system on the 2022-2025 Subaru WRX. Basic hand tools are sufficient for the install, making it a DIY-friendly upgrade for enthusiasts comfortable with engine bay work. No special tuning or modifications are required, but verifying fitment for your specific model year and trim is recommended to ensure compatibility.

• Professional Installation: DIY-Friendly
• Modifications Required: None
• Verify Compatibility: Confirm fitment for your specific 2022-2026 WRX model

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