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The Genuine Subaru OEM Transmission Spring Valve (Part #31742AA390) is a factory-original internal transmission component designed specifically for 2004-2007 Subaru STI and 2007 Subaru Legacy GT Spec B. As a genuine OEM part, it meets Subaru's exact engineering specifications, ensuring reliable hydraulic pressure control within the transmission valve body. This is the correct replacement part for maintaining the performance and longevity of your STI's transmission system.
| Subaru Part Number | 31742AA390 |
|---|---|
| Part Type | Transmission Spring Valve |
| Condition | New, Genuine OEM |
| Brand | Genuine Subaru |
| Application | Manual Transmission Valve Body (6-Speed Manual) |
This genuine Subaru OEM Transmission Spring Valve (31742AA390) is compatible with the following vehicles:
| Year | Model | Trim |
|---|---|---|
| 2007 | Subaru Legacy GT | Spec B |
| 2004-2007 | Subaru STI | STI |
Always verify your vehicle's VIN and transmission code before ordering to confirm fitment. If you are unsure about compatibility, consult a Subaru dealer or check the factory parts diagram.
This transmission spring valve is an internal transmission component located within the valve body. Due to the complexity of the installation process, it is recommended to be performed by a qualified transmission specialist to ensure proper installation and prevent damage to the valve body or transmission system. Always refer to the Subaru factory service manual for the correct installation procedure.
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