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The Genuine Subaru OEM Engine Harness (Part #24020AG421) is the factory-original wiring harness designed specifically for the 2016–2017 Subaru WRX STI. This is an exact-fit, direct-replacement harness engineered to Subaru's precise factory specifications, ensuring complete compatibility with all engine sensors, ignition components, and electronic control systems. Whether you're restoring a damaged harness or replacing one due to wear, this genuine OEM part guarantees the reliability and performance Subaru intended from the factory.
| Subaru Part Number | 24020AG421 |
|---|---|
| Part Type | Engine Wiring Harness |
| Condition | New, Genuine OEM |
| Brand | Subaru |
| Application | 2016–2017 Subaru WRX STI |
This engine harness is designed for the following vehicles:
| Year | Make | Model | Trim |
|---|---|---|---|
| 2016 | Subaru | WRX | STI |
| 2017 | Subaru | WRX | STI |
Always verify your vehicle's VIN and consult your Subaru parts diagram to confirm fitment before ordering. Trim-level and market-specific variations may apply.
This engine harness is a direct OEM replacement and is designed to connect using factory plugs and mounting points — no splicing, cutting, or adapter harnesses required. Due to the complexity of engine wiring harness replacement, professional installation by a qualified Subaru technician or experienced automotive electrician is strongly recommended. Incorrect installation may result in electrical faults, sensor errors, or engine damage.
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