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Subaru 11810AA090 Genuine PCV Valve

Name: Subaru 11810AA090 Genuine PCV Valve
Brand: globalsautoparts.com
Price: 13.12 USD
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$13.12 USD

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✔ Subaru 11810AA090 PCV Valve — Genuine OEM Part
✔ Fitment: 2010–2012 Subaru Legacy & Outback with 2.5L EJ253 engine
✔ Direct replacement for factory PCV valve — no modifications required
✔ Manufactured to Subaru's original specifications and tolerances
✔ Genuine Subaru OEM — not an aftermarket or Chinese replica
✔ Calibrated for the EJ253 2.5L engine

Subaru 11810AA090 Genuine PCV Valve — for 2010–2012 Legacy & Outback 2.5L

Increased oil consumption, rough or fluctuating idle, a whistling or hissing noise from under the hood, or a check engine light with crankcase ventilation‑related codes — these are common signs that your PCV valve is failing. A stuck PCV valve can cause excessive crankcase pressure, forcing oil past seals and gaskets, leading to oil leaks and premature engine wear. Replacing it with this genuine Subaru part restores proper crankcase pressure and protects your engine.

This is a factory‑original Subaru PCV valve (OE part number 11810AA090), specifically designed for the 2.5L EJ253 engine used in the 2010–2012 Subaru Legacy and Outback. It is engineered with a calibrated internal spring and precision‑machined stem to open at the correct vacuum level, maintaining optimal crankcase pressure across all operating conditions. This is the same part sold at Subaru dealerships.

When to Replace

When to Replace (Common Symptoms)
• Increased oil consumption (engine burns oil)
• Rough or fluctuating idle
• Whistling, hissing, or clicking noise from the PCV valve area
• Check engine light with codes related to crankcase ventilation (e.g., P0505, P0506, P0507)
• Oil sludge buildup in the intake manifold
• Excessive crankcase pressure (oil pushed out through seals or dipstick tube)
• The valve does not rattle when shaken (stuck closed or open)

Product Details & Highlights

Product Highlights
• ✔ Genuine Subaru OEM part — not an aftermarket or Chinese replica
• ✔ Calibrated internal spring — opens at correct vacuum level
• ✔ Precision‑machined stem — ensures consistent flow control
• ✔ Heat‑resistant materials — withstands high under‑hood temperatures
• ✔ Ready to install — no adjustment or calibration needed
• ✔ Backed by Subaru’s manufacturer warranty (valid through any authorized dealer)

Package Contents

Package Contents
• 1 × Subaru 11810AA090 PCV valve (genuine)

FAQ

Is this a genuine Subaru part or a copy?
This is 100% genuine Subaru OEM — in original factory packaging with Subaru part number printed on the label. It is not an aftermarket brand or a replica.

Does this fit my 2011 Subaru Outback with the 2.5L engine?
Yes — the 2011 Outback with the EJ253 2.5L engine uses this PCV valve. We recommend verifying with your VIN.

Does this fit my 2010 Subaru Legacy with the 2.5L engine?
Yes — the 2010 Legacy with the EJ253 2.5L engine uses this valve. Please verify with your VIN.

Does this fit my 2012 Subaru Outback with the 2.5L engine?
Yes — the 2012 Outback with the EJ253 2.5L engine uses this valve. Please verify with your VIN.

Does this fit my 2013 Subaru Legacy?
No — the 2013 and newer Legacy uses a different PCV valve (11810AA100 or similar). This is for the 2010–2012 models only.

Can I reuse the old PCV valve?
No — this valve is designed for one‑time use. Once it has been removed or installed, it should be replaced with a new one.

Does this valve come with a gasket or O‑ring?
This valve typically uses the existing factory gasket or O‑ring. Please check your original valve and consult your vehicle's service manual for seal requirements.

What is the torque spec for installation?
The valve is typically hand‑tightened until it seats, then a small additional turn with a wrench. Do not overtighten — the housing can crack. Refer to your service manual for the exact torque.

Does this fit my 2010 Subaru Outback with the 2.5L engine?
Yes — the 2010 Outback with the EJ253 engine uses this valve. We recommend verifying with your VIN.

Does this fit my 2011 Subaru Legacy with the 2.5L engine?
Yes — the 2011 Legacy with the EJ253 engine uses this valve. Please verify with your VIN.

Is this the same valve as 11810AA100?
No — 11810AA100 is for later models with the EZ30/EZ36 engine. This valve (11810AA090) is specifically for the 2.5L EJ253 engine.

What is the difference between this and an aftermarket PCV valve?
This is a genuine OEM part, which means it is manufactured to Subaru's exact specifications and quality standards. Aftermarket parts may use different materials or tolerances.

Does this valve fit the 2009 Subaru Outback?
No — the 2009 Outback uses a different part number. This is for the 2010–2012 models only.

Does this valve fit the 2012 Subaru Legacy?
Yes — the 2012 Legacy with the EJ253 engine uses this valve. Please verify with your VIN.

Does this valve fit the 2011 Subaru Outback?
Yes — the 2011 Outback uses this valve. Please verify with your VIN.

Does this valve come with a warranty?
Yes — this valve is backed by Subaru's manufacturer warranty. For claims, please contact your nearest Subaru authorized dealer.

Can I install this valve myself?
Yes — it is a straightforward replacement. However, we recommend consulting your vehicle’s service manual for the correct installation procedure.

Does this valve fit the 2010 Subaru Legacy?
Yes — the 2010 Legacy with the EJ253 engine uses this valve. Please verify with your VIN.

Does this valve fit the 2011 Subaru Legacy?
Yes — the 2011 Legacy with the EJ253 engine uses this valve. Please verify with your VIN.

Does this valve fit the 2012 Subaru Outback?
Yes — the 2012 Outback with the EJ253 engine uses this valve. Please verify with your VIN.

View full details

Subaru 11810AA090 PCV Valve — Genuine OEM Part

OEM Part Numbers
• 11810AA090

Vehicle Fitment Table (OEM Compatibility)

Brand	Model	Years	Engine	Notes
Subaru	Legacy	2010–2012	2.5L (EJ253)	All trims
Subaru	Outback	2010–2012	2.5L (EJ253)	All trims

⚠️ Important Fitment Notes:

• Always verify by VIN – Fitment is determined by the engine code (EJ253) and PCV system layout. Confirm your application before ordering.

• 2.5L only – This valve is specifically for the 2.5L EJ253 engine. It is not compatible with 3.0L or 3.6L engines.

• Genuine OEM – This is an original Subaru factory part, not an aftermarket brand or replica.

• Double‑check your original part – Before ordering, confirm the part number stamped on your old PCV valve or run your VIN through a Subaru OEM parts catalog for absolute certainty.

Condition
New (100% genuine Subaru packaging)

Product Type
PCV Valve (Positive Crankcase Ventilation)

Function
Routes blow‑by gases from the crankcase back into the intake manifold for combustion. The valve opens proportionally to intake manifold vacuum, maintaining optimal crankcase depression and preventing pressure buildup that could force oil out through seals and gaskets.

Applications
This PCV valve fits the 2010–2012 Subaru Legacy and Outback with the 2.5L EJ253 engine.

Important: This valve is for the 2.5L EJ253 engine only. It is not compatible with other engine sizes or later model years. If in doubt, send us your VIN before ordering.

Technical Specifications

Parameter	Specification
Brand	Subaru (Genuine OEM)
Part Number	11810AA090
Seller SKU	SUBARU_11810AA090
Type	PCV valve (positive crankcase ventilation)
Engine Family	EJ253 (2.5L)
Operating Principle	Proportional opening based on intake vacuum
Housing Material	Heat-resistant plastic / metal
Condition	New (factory original)

Warranty
Subaru's original manufacturer warranty applies. For claims, please contact your nearest Subaru authorized dealer with your proof of purchase. Warranty terms may vary by region — contact us before purchase if you need a warranty confirmation.