Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
General Information & Specifications: Specifications: WRX: Electrical
| Model | 2.0 L DOHC turbo | |||||
| CVT | 6MT | |||||
| Ignition timing (at idling) | BTDC | 8°±10° | 6°±10° | |||
| Spark plug | Type and manufacturer | NGK: ILKAR8H6 | ||||
| Generator | 12 V - 130 A | |||||
| Battery | Type | 75D23L | ||||
| Nominal capacity | 5 HR: 53 Ah [25°C (77°F)] | |||||
| Nominal voltage | 12 V | |||||
| CCA | 470 A | |||||
| BCI group number(1) | 35 | |||||
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Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.