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Subaru PCV Valve Legacy Outback 3.0 & 3.6L Forester Impreza Tribeca Non Turbo OEM NEW 11810AA100 Genuine OEM

Name: Subaru PCV Valve Legacy Outback 3.0 & 3.6L Forester Impreza Tribeca Non Turbo OEM NEW 11810AA100 Genuine OEM
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Price: 33.25 USD
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✔ Subaru 11810AA100 PCV Valve — Genuine OEM Part
✔ Fitment: Subaru Legacy, Outback, Tribeca with 3.0L (EZ30) & 3.6L (EZ36) engines; select 2.5L non-turbo models in Forester, Impreza
✔ 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

Subaru 11810AA100 Genuine PCV Valve — for 3.0L / 3.6L and 2.5L Non-Turbo Engines

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 11810AA100) designed for Subaru 3.0L (EZ30) and 3.6L (EZ36) engines, as well as select 2.5L non-turbo applications. 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 11810AA100 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 2008 Subaru Outback with the 3.0L engine?
Yes — the 2008 Outback with the EZ30 3.0L engine uses this PCV valve. We recommend verifying with your VIN.

Does this fit the Tribeca with the 3.6L engine?
Yes — the Tribeca with the EZ36 3.6L engine uses this valve. Please verify with your VIN.

Does this fit my 2010 Subaru Forester with the 2.5L non-turbo engine?
If your Forester has the 2.5L naturally aspirated engine and matches the part number, yes. We recommend checking your VIN for absolute certainty.

Can I use this valve on a turbocharged engine?
No — this valve is designed for naturally aspirated engines only. Turbocharged Subarus use a different PCV valve.

How often should I replace the PCV valve?
Subaru does not specify a fixed interval, but replacement is recommended every 60,000–80,000 km (37,000–50,000 miles) or when symptoms appear.

How do I know if my PCV valve has failed?
Check for increased oil consumption, rough idle, or a whistling noise from the valve. You can also shake the valve — it should rattle freely. If it doesn't rattle, it is stuck.

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 2012 Subaru Legacy with the 3.6L engine?
Yes — the 2012 Legacy with the EZ36 3.6L engine uses this valve. We recommend verifying with your VIN.

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.

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Subaru PCV Valve Legacy Outback 3.0 & 3.6L Forester Impreza Tribeca Non Turbo OEM NEW 11810AA100 Genuine OEM

OEM Part Numbers
• 11810AA100

Vehicle Fitment Table (OEM Compatibility)

Brand	Model	Engine	Years	Notes
Subaru	Legacy	3.0L (EZ30) / 3.6L (EZ36)	2005–2014	All trims with 3.0L/3.6L
Subaru	Outback	3.0L (EZ30) / 3.6L (EZ36)	2005–2014	All trims with 3.0L/3.6L
Subaru	Tribeca	3.0L (EZ30) / 3.6L (EZ36)	2006–2014	All trims
Subaru	Forester	2.5L (non-turbo)	2004–2013	Select models (check VIN)
Subaru	Impreza	2.5L (non-turbo)	2004–2013	Select models (check VIN)

⚠️ Important Fitment Notes:

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

• Not for turbo – This valve is designed for naturally aspirated (non-turbo) engines. It is not compatible with turbocharged Subaru 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 Subaru 3.0L (EZ30) and 3.6L (EZ36) engines in Legacy, Outback, and Tribeca, as well as select 2.5L non-turbo engines in Forester and Impreza from approximately 2004 through 2014.

Important: This valve is for naturally aspirated engines only. It is not compatible with turbocharged engines. If in doubt, send us your VIN before ordering.

Technical Specifications

Parameter	Specification
Brand	Subaru (Genuine OEM)
Part Number	11810AA100
Seller SKU	SUBARU_11810AA100
Type	PCV valve (positive crankcase ventilation)
Engine Family	EZ30 (3.0L) / EZ36 (3.6L) / 2.5L non-turbo
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.