2006 Subaru Impreza Owner's Manual - Page 334
2006 Subaru Impreza Manual
Page 334 highlights
Engine model Engine type Displacement cc (cu-in) Bore Stroke in (mm) Compression ratio Firing order Engine Specifications 12-3 EJ253 (2.5-liter, SOHC, non-turbo) Horizontally opposed, liquid cooled 4 cylinder, 4-stroke gasoline engine 3.9 3.1 (99.5 79.0) 1324 8.4 : 1 2,457 (150) EJ255 (2.5-liter, DOHC, turbo, WRX) EJ257 (2.5-liter, DOHC, turbo, WRX-STI) 10.0 : 1 8.2 : 1 Battery type and capacity (5HR) Alternator Spark plugs AT: Automatic transmission MT: Manual transmission Electrical system MT AT WRX Except WRX 12V-48AH (55D23L) 12V-52AH (75D23L) 12V-110A 12V-90A FR5AP-11 (NGK) ILFR6B (NGK) Non-turbo engine Turbo engine CONTINUED
Specifications
12-3
²
CONTINUED
²
Engine
Electrical system
AT: Automatic transmission
MT: Manual transmission
Engine model
EJ253
(2.5-liter, SOHC, non-turbo)
EJ255
(2.5-liter, DOHC, turbo, WRX)
EJ257
(2.5-liter, DOHC, turbo, WRX-STI)
Engine type
Horizontally opposed, liquid cooled 4 cylinder, 4-stroke gasoline engine
Displacement cc (cu-in)
2,457 (150)
Bore
Stroke in (mm)
3.9
3.1 (99.5
79.0)
Compression ratio
10.0 : 1
8.4 : 1
8.2 : 1
Firing order
1
²
3
²
2
²
4
Battery type and capacity (5HR)
MT
12V-48AH (55D23L)
AT
12V-52AH (75D23L)
Alternator
WRX
12V-110A
Except WRX
12V-90A
Spark plugs
Non-turbo engine
FR5AP-11 (NGK)
Turbo engine
ILFR6B (NGK)