Description
Genuine Spark Plug for the 2010–2012 Subaru Outback with the 2.5L boxer 4
This is a new, genuine Subaru spark plug with OEM part number 22401AA731, engineered for the 2.5L boxer 4 engine in the 2010–2012 Subaru Outback. Worn plugs make the coils work harder and cause misfires, hard starts and lost fuel economy. Use the factory heat range and gap specified for this engine. Mason’s Auto Store sells it 23% below the manufacturer’s suggested retail price and ships it across the USA from our Battle Creek, Michigan warehouse.
Catalog fitment notes: 2.5L without turbo.
Specifications
| Part type | Spark Plug |
|---|---|
| OEM part number | 22401AA731 |
| Brand | Subaru Genuine |
| Engine | 2.5L boxer 4 |
| Fits | 2010–2012 Subaru Outback |
| Condition | New OEM (genuine factory part) |
| Warranty | 12 months (manufacturer parts warranty) |
Will it fit my Subaru Outback?
Engine, trim, drivetrain and production date all affect the correct part number. Confirm your engine on the emissions label under the hood or from the 8th character of your VIN, compare the OEM number 22401AA731 with your old part, or add your 17-digit VIN at checkout — we verify fitment for free before shipping. Shops and fleets can send a bulk inquiry for one combined quote.
Why buy from Mason’s
- Family parts business serving drivers since 1936
- Genuine OEM part number and engine shown on every listing
- Pay by card, Afterpay, Zelle, Cash App or bank transfer — ships once payment is confirmed
- Optional shipping insurance and 30-day returns on unused parts
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