Subaru Head Gasket Replacement Cost
Replace both head gaskets on a 2.5L EJ-series boxer engine.
$1,800–$3,200national average
Parts
$350–$650
Labor
12–16 hrs
DIY-friendly?
Yes (4/5)
Why this fails
EJ25 SOHC head gaskets fail externally between cylinder and oil/coolant gallery; updated 6-layer P/N 11044AA770 resolves it.
What the job involves
- Remove engine or pull heads in chassis
- Replace both head gaskets with updated P/N
- Resurface heads (machine shop)
- New head bolts (TTY, single-use)
- While in there: timing belt + water pump + thermostat
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If you delay this repair
Coolant leak progresses; eventual overheating warps heads — repair cost doubles.
Save money
- • Bundle with timing belt service (saves 4 hours of duplicate labor)
- • Independent Subaru shops are typically $700-1000 cheaper than dealer
- • Have heads resurfaced even if they look fine
OEM part numbers
11044AA770
FAQ
How much does subaru head gasket replacement cost cost in 2026?
Expect $1,800–$3,200 at most US shops, parts plus labor.
How long does the job take?
12–16 labor hours typically.
Can I do this myself?
Yes — DIY difficulty 4/5.
What happens if I delay?
Coolant leak progresses; eventual overheating warps heads — repair cost doubles.