King Engine Bearings MB4272SI.026 Main Bearing Set Holden Alloytec - V6

The King Engine Bearings MB4272SI.026 is a precision-engineered main bearing set designed for Holden Alloytec V6 engines (175 and 190 models). This set includes 4 pairs of bi-metal bearings featuring King's advanced SI-Series construction for reliable OE replacement performance.

Key Features:

• Bi-metal construction with aluminum silicon alloy base strengthened by 2.5-3% silicon content
• 100% lead-free design for environmental sustainability and safety
• Engineered specifically for medium-load engines and nodular cast iron crankshafts
• Improved oil clearance reduces wear and increases engine life while minimizing noise and vibration
• Enhanced crankshaft conditioning for better seizure and wear resistance
• Includes 4 pairs of main bearings with .026mm (0.001") oversize thickness

About King SI-Series Bearings:

King's SI-Series bearings are purpose-built for OE replacement and performance rebuilds. The aluminum-silicon alloy provides excellent strength and durability for medium-load applications, while the lead-free formulation meets modern environmental standards without compromising performance. These bearings excel in engines using nodular cast iron crankshafts and are ideal for gasoline or diesel engine rebuilding projects.

King Engine Bearings has been manufacturing premium engine bearings since 1960, utilizing advanced materials and application-specific engineering to deliver superior quality and fit. Every bearing is designed to meet or exceed OEM specifications for complete customer satisfaction.