Fathers Day
Call Our Support Line
24 Hours / 7 Days a Week!  
Same Day Shipping Before 11 PM ET
My Cart
Shop By Vehicle
Shop By
Close Menu
Top Categories
All Categories

All Categories

Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates

Moroso 85484

Air-Oil Separator 2004-07 for Subaru STI

Moroso 85484


made in usa
jegs shipping
FREE Shipping
Ships from Manufacturer
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
Moroso 85484 Air-Oil Separator 2004-07 for Subaru STI $298.99
Air-Oil Separator
  • 2004-07 for Subaru STI
  • 2006-07 for Subaru WRX
  • Large Body

  • Moroso 85484 Details


  • This kit has two tanks: the first collects the excess crankcase vaporsresidual oil and moisture that are vented back into the intake manifold
  • The second tank collects the excess crankcase vapors, residual oil and moisture from each cylinder head
  • If both were plumbed into the same tank then the crankcase ventilation system could not operate the way it was designed to-this kit is the only one that accomplishes this
  • Capturing this oil mist before it re-enters the engine reduces detonation and deposits on the intake tract, including the valves themselves and from lowering the efficiency of the intercooler
  • Ethanol enriched fuels put off more moisture during the combustion process-these are an excellent tool for collecting this extra moisture
  • Includes 3/8" and 1/2" 90ยบ inlet and outlet fittings, 66" of 3/8" and 1/2" rubber hose for plumbing the inline and a billet aluminum mounting clamp for the body
  • Each separator has a bottom drain with an elbow that makes draining the collected oil virtually mess free
  • Genuine Subaru throttle body gasket included

  • Specifications:

    Manufacturer's Part Number:

    These Moroso Air-Oil Separator Tanks are plumbed into a vehicle's breather/PCV system to capture excess crankcase vapors and the residual oil mist from re-entering the intake track. There are versions available for factory configurations, vacuum pumps, and universal installations.

    Vehicles from the factory vent these excess crankcase vapors and residual oil right back into the intake manifold, which could cause detonation and oil deposits to form in the intake track. Moroso's polished billet aluminum bodies complement any engine compartment and can be chromed or powdercoated for a custom look. .

    Items You Need