SBI Engine Parts 230-2139 Head Saver Shim Cylinder Head Shim

The SBI Engine Parts 230-2139 is a head saver shim (also called a cylinder head shim or head spacer shim) for engine rebuilding. It is used when a cylinder head has been resurfaced and has lost height.

Key Features:

• Replaces height lost when a cylinder head is machined
• Helps restore the correct spacing between the head and the block
• Installs on the block surface, directly under the head gasket

Resurfacing a head can raise the compression ratio and affect how the intake manifold lines up on some engines. A head saver shim is a way to make up that lost height during a rebuild.