Premium 4D30/4D31/4D32 Main Bearings for Mitsubishi Engines

High-strength alloy construction ensures superior load capacity and wear resistance for demanding engine applications. Precision-machined surfaces with micro-groove technology enhance oil retention and lubrication efficiency.

Direct OEM replacement (ME011530/M121A) maintains exact factory specifications for Mitsubishi 4D30/4D31/4D32 diesel engines. Ideal for commercial vehicles, construction equipment, and industrial machinery requiring durable crankshaft support.

Advanced thermal-treated steel backing paired with anti-corrosion overlay extends bearing lifespan under extreme temperatures. Seamless installation with factory-matched dimensions and tolerances.

Bulk purchase available for fleet maintenance and engine rebuild specialists. Globally sourced materials meet ISO 9001 standards. Ships worldwide with wholesale pricing advantages.

Trusted by professional mechanics for critical engine rebuilds - delivers OEM performance at wholesale cost.