Engine; Electrical System - Subaru 2004 Legacy Owner's Manual

Engine

Engine model
Engine type
Displacement cc (cu-in)
Bore × Stroke in (mm)
Compression ratio
Firing order

Electrical system

Battery type and capacity
Alternator
Spark plugs
*: CALIFORNIA spec models
EJ251, EJ259
(2.5 liter)
Horizontally opposed, liquid cooled 4 cyl-
inder, 4 stroke gasoline engine
2,457 (150)
3.92 x 3.11
(99.5 x 79.0)
10.0 : 1
1 – 3 – 2 – 4
2.5 liter MT
AT
3.0 liter
2.5 liter
3.0 liter
2.5 liter
3.0 liter
Specifications
EZ30D
(3.0 liter)
Horizontally opposed, liquid cooled 6 cyl-
inder, 4 stroke gasoline engine
3,000 (183.0)
3.51 x 3.15
(89.2 x 80.0)
10.7 : 1
1 – 6 – 3 – 2 – 5 – 4
55D23L
75D23L
75D23L
12V-90A
12V-100A
RC10YC4 (Champion)
BKR6E-11 (NGK)
BKR5E-11 (NGK)
FR5AP-11 (NGK)*
PLFR6A-11 (NGK)
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