Perfect Circle MB-3249VCTU9 Upper Main Bearing Set Coated 9-Piece

The Perfect Circle MB-3249VCTU9 is a high-performance upper main bearing set designed for Mopar B/RB-series engines, including the legendary 426 Hemi. This 9-piece set includes only the upper main bearing shells, making it ideal for engine rebuilds where lower bearings do not require replacement.

Key Features:

• V-Series tri-metal construction with lead-indium overlay for superior conformability
• Coated bearing surface for enhanced durability and reduced friction
• Hardened steel backing with high crush for better seating and retention
• Standard size bearings for engines with 3.555-inch to 3.675-inch main bearing flange O.D.
• Upper shells only configuration (9-piece set)
• No flash plating on steel back for improved dimensional accuracy

Perfect Circle, now part of the MAHLE family, has been manufacturing premium engine bearings since 1895. These coated V-Series bearings deliver the quality and reliability that engine builders trust for both street performance and racing applications. The lead-indium overlay offers excellent conformability with slightly reduced wear resistance compared to lead-tin copper overlay, making these bearings well-suited for high-performance builds where proper clearances are maintained.