Genuine Subaru WRX STI Starter Solenoid

The Starter Solenoid of the Subaru WRX STI allows for instant transfer of power from the battery to the motor so that every push of the ignition is filled with confidence. Although small, the Starter Solenoid is designed for high current flow. It sits on the starter housing, which snaps shut when the key is turned. The solenoid then drives the pinion gear forward, meshing flawlessly with the flywheel. The Starter Solenoid modifies the signal from a light switch to a surge that overcomes the turbo boxer's high compression to ensure the performance sedan starts, even on icy mornings, further enhancing the proud Subaru promise of cold start reliability. Later WRX STI generations feature the more sophisticated plunger style Starter Solenoid. This combines electromagnetic switching with a mechanical linkage and a one-way clutch to provide engagement in a flash while preventing damaging backspin of the motor. There are no wiring changes necessary to swap this exact OEM unit into 2015 through current WRX STI models as well as earlier GD and GR platform owners. Subaru's design continuity makes tuning easy. Due to its low weight, the Starter Solenoid helps keep the WRX STI handling balance of the chassis. It also enhances efficiency by drawing full cranking power quickly so that the battery is not at maximum load for long. Safety also increases as a strong Starter Solenoid prevents partial engagements that could grind gears and cause a sudden stall at busy junctions. The Starter Solenoid's heat resistant coils, corrosion proof contacts, and sealed plunger inspire confidence in the Subaru world, so every vigorous WRX STI launch begins with a perfect spin. By routinely checking the voltage and cleaning the battery terminals, the Starter Solenoid is allowed to work properly, allowing the Subaru turbo sound to start working without drama across the WRX STI trim.

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