Sealed Power 4664M30 Main Bearing Set – 0.030 in Undersize, Big Block Buick

The Sealed Power 4664M30 Main Bearing Set is designed for Big Block Buick applications requiring main bearings with a 0.030-inch undersize specification. This set provides a replacement option for engine rebuilding and service work where the stated bearing size is required.

Manufactured under the Sealed Power brand, this main bearing set is identified by part number 4664M30. Its application-specific design helps ensure the bearing specification matches the needs of the applicable Big Block Buick engine build.

Review engine specifications and bearing requirements before installation to confirm that the 0.030-inch undersize configuration is appropriate for your application. Professional installation and proper measurement practices are recommended for engine components.

Features:

• Application: Big Block Buick
• Component: Main bearing set
• Bearing Size: 0.030 in undersize
• Brand: Sealed Power
• Part Number: 4664M30