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This Genuine Subaru OEM Oil Cooler Hard Pipe (Part #21328AA231) is the factory-replacement coolant/oil feed line designed for the 2015–2021 Subaru WRX and 2014–2018 Forester XT. Engineered to exact OEM specifications, this hard pipe ensures a leak-free connection within the oil cooling circuit, maintaining optimal engine oil temperatures under demanding driving conditions. As a direct-fit OEM component, it installs without modification and is backed by Subaru's factory warranty.
| Subaru Part Number | 21328AA231 |
|---|---|
| Supersedes | 21328AA230 |
| Part Type | Oil Cooler Hard Pipe |
| Brand | Genuine Subaru OEM |
| Engine Application | FA20DIT (Turbocharged) |
| Warranty | Subaru Genuine Parts Warranty |
This Genuine Subaru OEM Oil Cooler Hard Pipe fits the following vehicles:
2014-2018 Subaru Forester XT
2015-2021 Subaru WRX
Note: This part supersedes the earlier part number 21328AA230. If your vehicle previously used #21328AA230, #21328AA231 is the correct current replacement.
This oil cooler hard pipe is a direct OEM replacement and installs in the factory location without any cutting, drilling, or modification. Basic mechanical knowledge and standard hand tools are recommended. For best results and to ensure no oil or coolant leaks, professional installation by a qualified Subaru technician is advised. Always inspect surrounding seals and o-rings during replacement.
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