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The Genuine Subaru OEM Oil Cooler Post (Part #21317AA070) is a factory-original replacement component designed to maintain the integrity of your engine's oil cooling system. Engineered specifically for compatible Subaru Ascent, BRZ, Forester, Legacy, Outback, Tribeca, and WRX models, this exact-fit OEM post ensures a secure, leak-free connection between the oil cooler and engine block — the same part Subaru installs on the assembly line. If you're restoring proper oil cooling function or replacing a damaged or worn post, this is the correct, no-compromise solution.
| Part Number | 21317AA070 |
|---|---|
| Brand | Genuine Subaru OEM |
| Component | Oil Cooler Post |
| System | Engine Oil Cooling |
| Application | Turbocharged Subaru Engines (FA20DIT, EJ25) |
| OEM Part Number | 21317AA070 |
This Genuine Subaru OEM Oil Cooler Post is confirmed to fit the following vehicles:
| Year Range | Model |
|---|---|
| 2019–2027 | Subaru Ascent |
| 2022–2027 | Subaru BRZ |
| 2014–2018 | Subaru Forester |
| 2009–2025 | Subaru Legacy |
| 2005–2007 | Subaru Outback |
| 2009–2027 | Subaru Outback |
| 2006–2014 | Subaru Tribeca |
| 2015–2026 | Subaru WRX |
Always verify your vehicle's VIN and build date with your Subaru parts catalog or a Subaru dealer to confirm fitment before ordering.
The Oil Cooler Post is a direct OEM replacement component. Installation involves removing the oil cooler assembly and threading in the replacement post to the engine block. Proper torque specifications from the Subaru factory service manual should be observed, and oil system seals should be inspected and replaced as needed during the repair. Professional installation by a qualified Subaru technician is recommended to ensure proper torque and sealing. No modifications are required — this is a true bolt-on OEM replacement.
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