| Year | Make | Model |
|---|---|---|
| 2014 - 2026 | Subaru | WRX |
| 2014 - 2021 | Subaru | WRX STI |
| 2014 - 2021 | Subaru | WRX VA |
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COBB V3 Air/Oil Separator (AOS) 1L w/ ORB Ports | Subaru WRX (15-21) (843615)
COBB V3 Air/Oil Separator (AOS) 1L w/ ORB Ports | Subaru WRX (15-21) (843615)
SKU:843615
In stock
Regular price
$610.00 USD
Regular price
$610.00 USD
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$610.00 USD
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▶ Vehicle Fitments
The COBB V3 Air/Oil Separator (AOS) for 2015–2021 Subaru WRX is a precision-engineered component designed to prevent crankcase oil vapors from re-entering the engine’s intake system. Developed in collaboration with IAG Performance, this unit features a compact cast aluminum body with a durable black powdercoat finish and a 1-liter holding capacity. Integrated ORB ports enhance fluid management, while the separator effectively reduces oil and carbon buildup that can degrade fuel octane and engine performance. This AOS improves engine longevity and maintains optimal combustion efficiency by capturing and separating oil vapors before they can contaminate the intake air.
This air/oil separator is specifically designed for Subaru WRX models from 2015 through 2021, ensuring a direct fit with factory components. It is ideal for street and performance driving, helping to maintain engine cleanliness under various operating conditions. Installation is straightforward, utilizing existing mounting points and connections for a bolt-on upgrade. The compact design allows for easy integration without sacrificing engine bay space. This product is a reliable solution for enthusiasts seeking to enhance engine durability and maintain peak performance in their WRX.
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Overview
Overview
COBB Air / Oil Separator (AOS)
Fitment: 2015-2021 Subaru WRX
Part #: 843615
Overview
The COBB V3 Air / Oil Separator (AOS) is designed to help reduce the amount of crankcase oil vapors that recirculate through your engine’s intake system. By capturing and separating oil vapors before they re-enter the intake, this unit helps maintain cleaner intake components and supports more consistent combustion. This product is ideal for Subaru WRX owners looking to improve engine reliability and reduce carbon and oil buildup over time.
Developed in partnership with IAG Performance, the COBB AOS offers a durable and compact solution that fits neatly within the engine bay while providing effective vapor separation. It is engineered to support the longevity and efficiency of your turbocharged engine by minimizing the negative effects of oil vapor contamination.
Key Features
The COBB V3 Air / Oil Separator includes several features designed for durability and functionality:
- 1 Liter holding capacity to effectively trap oil vapors
- Integrated ORB ports for easy hose connections and routing
- Compact cast aluminum body with a black powdercoat finish for corrosion resistance and durability
- Designed specifically for 2015-2021 Subaru WRX models for precise fitment
- Helps reduce oil and carbon buildup in the intake system
- Supports maintaining fuel octane effectiveness by limiting oil vapor contamination
Construction & Design
The separator features a robust cast aluminum construction that balances strength with lightweight design. The black powdercoat finish enhances corrosion resistance and provides a sleek, durable appearance. Its compact size allows for straightforward installation without sacrificing engine bay space, making it a practical upgrade for WRX owners focused on engine health and maintenance.
Installation & Fitment
This Air / Oil Separator is designed as a direct fit for Subaru WRX models from 2015 through 2021. Installation involves connecting the unit to existing crankcase ventilation lines using the integrated ORB ports. Fitment should be verified against your vehicle’s specific configuration and the part number to ensure compatibility.
