King Bearings MB 556SI 030 Main Bearing Set for Big Block Chevy

The King Bearings MB 556SI 030 Main Bearing Set is designed for Big Block Chevy applications and is identified as a BBC Gen 4, Gen 5, and Gen 6 main bearing set. This kit features a 0.030-inch undersize specification for engine rebuilding applications requiring undersize main bearings.

Designed with a 1/2-groove configuration, this main bearing set provides a purpose-specific bearing design for compatible Big Block Chevy engine assemblies. The set is suited for rebuilders and technicians who need a replacement main bearing solution matching the listed engine generations and undersize requirement.

Use the part number MB 556SI 030 to verify the correct bearing selection for your application before installation. This product is supplied as a kit, with the supplier identifying it as a main bearing set for BBC Gen 4, Gen 5, and Gen 6 engines.

Features:

• Brand: King Bearings
• Part Number: MB 556SI 030
• Application: Big Block Chevy
• Engine Generations: BBC Gen 4, Gen 5, and Gen 6
• Bearing Type: Main bearing set
• Undersize: 0.030 inch
• Groove Design: 1/2 groove
• Product Format: Kit