Subaru Alternator Replacement Cost
Replace alternator on FB or EJ Subaru engines.
$450–$900national average
Parts
$250–$600
Labor
1.5–3 hrs
DIY-friendly?
Yes (3/5)
Why this fails
Brushes wear out, voltage regulator fails after 120-180k miles.
What the job involves
- Disconnect battery
- Loosen serpentine belt
- Unbolt alternator
- Test voltage 13.8-14.4V
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If you delay this repair
Stalling, dead battery, no-start, dim headlights.
Save money
- • DIY save $200+
- • Reman from RockAuto ~$150
- • Replace serpentine belt while there
FAQ
How much does subaru alternator replacement cost cost in 2026?
Expect $450–$900 at most US shops, parts plus labor.
How long does the job take?
1.5–3 labor hours typically.
Can I do this myself?
Yes — DIY difficulty 3/5.
What happens if I delay?
Stalling, dead battery, no-start, dim headlights.