WRX STI: Electrical
| Model | 2.5 L DOHC high power turbo | |||
| Ignition timing (at idling) | BTDC | 15°±10° | ||
| Spark plug | Type and manufacturer | NGK: ILFR7H | ||
| Generator | 12 V - 110 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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