3MI Racing AOS Hose Adapter for Subaru EJ | IAG, COBB & Crawford Compatible | 00821025
Video description
Complete your AOS drain hose installation with the 3MI Racing 7/8" to 5/8" Barbed Hose Adapter. This billet adapter is specifically designed to connect IAG, COBB, and Crawford Air/Oil Separator systems to the 3MI Racing AOS to EJ Turbo Drain Hose Kit, providing a simple, reliable solution for adapting the different hose sizes.
Machined from 6061-T6 aluminum, this male-to-male barb fitting replaces the factory Y-fitting included with compatible AOS kits, creating a cleaner and more efficient drain hose setup.
Features:
- Adapts 7/8" block outlet to 5/8" AOS vent hose
- Designed for use with the 3MI Racing AOS to EJ Turbo Drain Hose Kit
- Precision-machined 6061-T6 aluminum construction
- 7/8" to 5/8" male-to-male barbed fitting
- Durable, corrosion-resistant design
Compatible with:
- IAG Street AOS
- IAG Competition AOS
- COBB AOS
- Crawford AOS
Installation Notes:
- Replaces the supplied Y-fitting included with compatible AOS kits.
- The AOS drain barb at the bottom of the separator connects to the 1/2" section of the 3MI Racing drain hose.
- The 5/8" hose from the lowest port of the AOS routes directly to the center block vent.
- This adapter provides the necessary transition from 5/8" hose to the 7/8" block outlet.
Recommended Companion Product: The 3MI Racing AOS to EJ Turbo Drain Hose Kit is required for this installation and is sold separately.
Whether you're upgrading an existing AOS or installing the 3MI drain hose system, this adapter provides a clean, dependable connection for long-term reliability.





