Moroso Small Body Air-Oil Separator Black - 2008-2014 Subaru STI w/ Front Mount Intercooler
Moroso Small Body Air-Oil Separator Black - 2008-2014 Subaru STI w/ Front Mount Intercooler
Moroso
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PRODUCT DETAILS
RallySport Direct carries a great selection of air/oil separators brought to you by Moroso.
Here, you are looking at the Moroso Air / Oil Separator that features the small bodies. This kit will help the factory crankcase ventilation to operate more efficiently by removing excess crankcase vapors, residual oil, and moisture from being vented back into the intake manifold which can coat your pistons and everything else with a detonation prone layer of oil.
DETAILS:
- Plumbed into the vehicle's PCV system to capture the excess crankcase vapors, residual oil mist and moisture from reentering the intake tract
- Vehicles from the factory vent these excess crankcase vapors, residual oil mist and moisture right back into the intake manifold which could cause detonation, oil deposits to form in the intake tract including the valves themselves and from lowering the efficiency of the intercooler in intercooler equipped vehicles
- Increases engine performance from cleaner intake air
- Air-Oil separators have billet aluminum bodies with internal baffling and mesh media
- Includes heavy-duty brass inlet and outlet fittings, Fuel/Emission/PCV Vapor hose, stainless steel mounting bracket and billet aluminum mounting clamp for the body of the separator
- Some Vehicle crankcase ventilation systems require that 2 air-oil separator bodies be used to properly capture and ventilate the system
- Includes all required hoses, fittings, brackets, and hardware
SMALL BODY FEATURES:
- Includes (2) small bodies
- Smaller size fits in more applications and some customers prefer the smaller body
- Two-piece body unscrews for draining
- Anodized black finish
NOTE:
- For vehicles still utilizing an aftermarket front mount intercooler
WHY WE CARRY THIS
We only list parts we’d run ourselves or recommend to a friend building a real car. If it feels vague, unverified, or inconsistent, it doesn’t make the cut.
- Fitment-first mindset — no “universal” roulette
- Brand reputation matters — we favor proven manufacturing
- Support that actually responds with real answers
WHAT TO EXPECT
This is the clean path: correct fitment, clean install, and results that match the intent.
- Install-ready experience with correct mounting where provided
- Finish that holds up to real driving, not just photos
- Selections on this page drive the exact fitment shipped
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Anyone can list parts. We curate what belongs on a serious build. Our goal is simple: fewer surprises, cleaner installs, and confidence when you hit “Buy.”
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We prioritize vehicle-specific listings and clear selection logic so you’re not gambling on compatibility.
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Proven manufacturing and consistent quality matter more than hype. We bias toward what actually holds up.
Real support
If you have a question, you’ll get a human answer that helps you finish the build — not a copy-paste shrug.
RallySport Direct carries a great selection of air/oil separators brought to you by Moroso.
Here, you are looking at the Moroso Air / Oil Separator that features the small bodies. This kit will help the factory crankcase ventilation to operate more efficiently by removing excess crankcase vapors, residual oil, and moisture from being vented back into the intake manifold which can coat your pistons and everything else with a detonation prone layer of oil.
DETAILS:
- Plumbed into the vehicle's PCV system to capture the excess crankcase vapors, residual oil mist and moisture from reentering the intake tract
- Vehicles from the factory vent these excess crankcase vapors, residual oil mist and moisture right back into the intake manifold which could cause detonation, oil deposits to form in the intake tract including the valves themselves and from lowering the efficiency of the intercooler in intercooler equipped vehicles
- Increases engine performance from cleaner intake air
- Air-Oil separators have billet aluminum bodies with internal baffling and mesh media
- Includes heavy-duty brass inlet and outlet fittings, Fuel/Emission/PCV Vapor hose, stainless steel mounting bracket and billet aluminum mounting clamp for the body of the separator
- Some Vehicle crankcase ventilation systems require that 2 air-oil separator bodies be used to properly capture and ventilate the system
- Includes all required hoses, fittings, brackets, and hardware
SMALL BODY FEATURES:
- Includes (2) small bodies
- Smaller size fits in more applications and some customers prefer the smaller body
- Two-piece body unscrews for draining
- Anodized black finish
NOTE:
- For vehicles still utilizing an aftermarket front mount intercooler
