Subaru 2004 Impreza - Manual (Page 468)

12-3
Specifications
– CONTINUED –
! Engine
! Electrical system
AT: Automatic transmission
MT: Manual transmission
Engine model EJ251(2.5-liter, SOHC,
non-turbo)
EJ205 (2.0-liter, DOHC, turbo) EJ257 (2.5-liter, DOHC, turbo)
Engine type Horizontally opposed, liquid cooled 4 cylinder, 4-stroke gasoline engine
Displacement cu in. (cc) 150 (2,457) 122 (1,994) 150 (2,457)
Bore × Stroke in. (mm) 3.9 × 3.1 (99.5 × 79.0) 3.6 × 2.9 (92.0 × 75.0) 3.9 × 3.1 (99.5 × 79.0)
Compression ratio 10.0 : 1 8.0 : 1 8.2 : 1
Firing order 1 – 3 – 2 – 4
Battery type and
capacity (5HR) MT 12V-48AH (55D23L)
AT With 2.5-liter engine 12V-52AH (75D23L)
With 2.0-liter turbo engine 12V-52AH (65D23L)
Alternator 2.5-liter and 2.0-liter turbo engine 12V – 75A
2.5-liter turbo engine 12V – 90A
Spark plugs 2.5-liter engine RC10YC4 (Champion)
BKR6E-11 (NGK)
BKR5E-11 (NGK)
2.0-liter turbo engine PFR6G (NGK)
2.5-liter turbo engine IFLR6B (NGK)