Cylinder Block Cummins 3935943 | 3802270, 3802674, 3802997, 3928797

High-Performance Cylinder Block for Cummins 6BT 5.9L Engines

The Cylinder Block 3935943 is the structural foundation of your heavy-duty diesel engine. Engineered specifically for Cummins 6BT 5.9, ISB 5.9, and QSB 5.9 engines, this bare cylinder block is manufactured to meet or exceed rigorous industry standards. It features a dedicated port for the crankshaft speed sensor, ensuring seamless integration with your engine’s electronic control systems.

Key Features and Benefits

• Superior Durability: Cast from high-strength alloyed iron to withstand extreme combustion pressures and thermal stress.
• Precision Machining: Ensures exact tolerances for cylinder bores, main bearing journals, and deck flatness, preventing premature wear and leaks.
• Crankshaft Speed Sensor Port: Designed specifically for engines equipped with a crankshaft speed sensor for precise timing and performance.
• Excellent Heat Dissipation: Optimized cooling passages prevent hot spots and maintain stable operating temperatures under heavy loads.

Engine & Equipment Compatibility

This cylinder block is highly versatile and fits a wide range of agricultural, construction, and industrial applications, including:

• Cummins Engines: 6BT 5.9, ISB 5.9, QSB 5.9, 4B3.9
• Case IH Tractors: Maxxum 5130, 5140, 5230, 5240, 5250
• JCB Equipment: Compatible with various models using the B-series engine (Cross-ref: 02/911438)
• Hyundai Excavators & Loaders: 100D-7, HL740-7, R250LC-7, R210W9S

Technical Specifications

• Part Number: 3935943
• Engine Series: Cummins B Series (6-Cylinder, 5.9L)
• Material: Heavy-duty cast iron
• Configuration: Bare block with crankshaft speed sensor provision