CAT D398 Engine

Caterpillar D398 Engine – Key Specifications

General

• Engine Type: Diesel, 4-cycle, inline 6

• Aspiration: Turbocharged (with optional Aftercooler on some configurations)

• Displacement: 3,971 in³ (≈ 65.1 L)

• Bore: 6.75 in (171.45 mm)

• Stroke: 8.0 in (203.2 mm)

• Compression Ratio: ~14.0 : 1 (varies slightly with configuration)