Engine; Electrical System - Subaru 2007 Impreza-WRX Owner's Manual

& Engine
Engine model
Engine type
Displacement cc (cu-in)
Bore 6 Stroke in (mm)
Compression ratio
Firing order
& Electrical system
Battery type and capacity (5HR)
Alternator
Spark plugs
AT: Automatic transmission
MT: Manual transmission
EJ253
(2.5-liter, SOHC, non-turbo)
Horizontally opposed, liquid cooled 4 cylinder, 4-stroke gasoline engine
10.0 : 1
MT
AT
Non-turbo models
Turbo models
Non-turbo engine
Turbo engine
EJ255
(2.5-liter, DOHC, turbo, WRX)
2,457 (150)
3.9 6 3.1 (99.5 6 79.0)
8.4 : 1
1 – 3 – 2 – 4
12V-48AH (55D23L)
12V-52AH (75D23L)
FR5AP-11 (NGK)
ILFR6B (NGK)
Specifications
EJ257
(2.5-liter, DOHC, turbo, WRX-STI)
8.2 : 1
12V-90A
12V-110A
– CONTINUED –
12-3