Engine Core Plug. Engine Expansion Plug. Engine Freeze Plug. Engine Welch Plug.

Part Number: 11021AA170

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 Legacy, Outback, Tribeca

Diagram CYLINDER BLOCK for your 2025 Subaru Legacy  Premium Sedan
#11021A
Required: 3
SYSTEM '00MY-'04MY
Diagram CYLINDER BLOCK for your 2025 Subaru Legacy  Premium Sedan
#11021A
Required: 3
SYSTEM
Diagram CYLINDER BLOCK for your 2025 Subaru Legacy  Premium Sedan
#11021A
Required: 3
SYSTEM

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Kendall Subaru of Marysville

6001 33rd Ave NE, Marysville, WA, 98271