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Subaru STI : Engine and Cooling Products
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Engine Core Plug. Plug Cylinder Block.

Part Number: 11021AA121
Supersession(s): 11021AA120
View 11021AA121 Engine Core Plug. Plug Cylinder Block. Full-Sized Product Image
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2Z. NO.2. NO.3. Plug that prevents the Engine Block or Cylinder Head from cracking in Case of freezing Coolant. Also used to Plug the casting holes from production.

PLUG-CYLINDER BLOCK Engine Core Plug

Fits STI (2004 - 2007)

CYLINDER BLOCK
Full Diagram
Diagram CYLINDER BLOCK for your Subaru STI
#11021
Required: 1
2Z-.
CYLINDER BLOCK
Full Diagram
Diagram CYLINDER BLOCK for your Subaru STI
#11021
Required: 1
2Z-.
CYLINDER BLOCK
Full Diagram
Diagram CYLINDER BLOCK for your Subaru STI
#11021
Required: 1
2Z-.
CYLINDER BLOCK
Full Diagram
Diagram CYLINDER BLOCK for your Subaru STI
#11021
Required: 1
2Z-.
CYLINDER BLOCK
Full Diagram
Diagram CYLINDER BLOCK for your Subaru STI
#11021*B
Required: 1
NO.2.
CYLINDER BLOCK
Full Diagram
Diagram CYLINDER BLOCK for your Subaru STI
#11021*C
Required: 1
BODY '00MY-'04MY
NO.3.
CYLINDER BLOCK
Full Diagram
Diagram CYLINDER BLOCK for your Subaru STI
#11021*C
Required: 1
BODY
CYLINDER BLOCK
Full Diagram
Diagram CYLINDER BLOCK for your Subaru STI
#11021*C
Required: 1
SYSTEM '13MY-

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