Cobb 06-07 Subaru WRX / 04-07 STi Air Oil Separator-COBB-COBB811615
Cobb 06-07 Subaru WRX / 04-07 STi Air Oil Separator-COBB-COBB811615
Cobb 06-07 Subaru WRX / 04-07 STi Air Oil Separator-COBB-COBB811615
Cobb 06-07 Subaru WRX / 04-07 STi Air Oil Separator-COBB-COBB811615
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Cobb 06-07 Subaru WRX / 04-07 STi Air Oil Separator

COBB
COBB811615
700424680306
Oil Catch Cans
19 Units In Stock - Ships Next Business Day
$ 565.00
$ 565.00

SKU: B811615   |   UPC: 700424680306

Cobb 06-07 Subaru WRX / 04-07 STi Air Oil Separator

The Cobb Air Oil Separator captures oil mist from the PCV system on 2006-2007 Subaru WRX and 2004-2007 STI models, returning clean air to the intake while draining oil back to the sump. This keeps intercoolers and turbos free of oil buildup for consistent power delivery. Engineered for EJ20 and EJ25 turbo engines, it installs directly with factory hardware.

Key Features

  • CNC Machined 6061-T6 Aluminum: Durable construction with black anodized finish resists corrosion and withstands high boost pressures.
  • Multi-Stage Baffling: Effectively separates oil from air using cyclonic action and mesh filters, capturing over 95% of contaminants.
  • Integrated Check Valve: Prevents boost pressure from pushing oil vapors back into the intake tract during hard acceleration.
  • Factory-Style Drain: Direct hose connection routes captured oil to the oil pan, eliminating manual emptying.
  • Complete Kit: Includes laser-cut mounting bracket, stainless hardware, hoses, and fittings for plug-and-play installation.

Product Notes

  • Requires no cutting or permanent modifications to factory plumbing.
  • Service interval matches OEM oil changes check sight tube for oil level.

Installation Notes

  • Professional installation recommended.
  • Mounts to factory intake manifold bracket on STI, WRX uses firewall location.
  • Compatible with all Cobb intake systems and stock turbo setups 1-2 hours install time.

This Part Fits

Year Make Model Submodel
2006-2007 Subaru Impreza WRX
2004-2007 Subaru Impreza WRX STI

Why Choose Cobb?

  • Direct-fit design developed through real-world dyno and track testing on Subaru platforms.
  • High-flow components maintain peak boost without restrictions.
  • Precision engineering ensures seamless integration with OEM and aftermarket setups.

Frequently Asked Questions

  • Q: Will this fit my 2006 WRX with aftermarket intake?
    A: Yes, compatible with Cobb SF Intake and most short-ram intakes uses factory PCV port locations.
  • Q: What material is the housing made from?
    A: 6061-T6 aircraft-grade aluminum, CNC machined and black anodized for heat resistance up to 500°F.
  • Q: What is the warranty and install process?
    A: Backed by Cobb's 2-year limited warranty bolt-on install with provided template and no ECU tuning required.

Shipping & Handling

  • Method: UPS Ground or FedEx
  • Availability: In stock - ships same or next business day
  • Packaging: 10" x 8" x 6" box with foam protection
  • Weight: 1.9 lbs product, 3.2 lbs shipped

Request For Information

Have questions about Cobb 06-07 Subaru WRX / 04-07 STi Air Oil Separator? Fill out the form below and we'll get back to you by the next business day.
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Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

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