Cummins B3.3 4BTA3.9、6BT5.9、6CTA8.3、6LTAA8.9、QSB4.5、QSB6.7、QSL8.9、QSZ13、QSM11、QSX15、NTA855 engine for Cummins Excavator

Product Description: The B3.3 is a 3.3L, inline, four-cylinder, water-cooled, four-stroke diesel engine manufactured by Cummins.
This engine boasts compact size, lightweight design, and high reliability. It is widely used in small construction machinery, agricultural machinery, light commercial vehicles, and generator sets, suiting compact spaces and low-to-medium power requirements.
It is renowned for its low fuel consumption, stability, and ease of maintenance, making it suitable for continuous operation and complex operating environments.

Cummins B3.3 Product Specifications (Overview)

Engine Type: Inline 4-cylinder, 4-stroke, liquid-cooled

Displacement: 3.3L

Bore × Stroke: 101.6 mm × 127 mm

Compression Ratio: Approximately 17.2:1

Intake: Naturally aspirated (Turbocharging available on some models)

Fuel System: Mechanical injection or electronically controlled (depending on model)

Rated Power: Approximately 48–75 kW (65–100 hp) @ 2500 rpm

Maximum Torque: Approximately 220–350 Nm @ 1500 rpm

Number of Valves: 8 (2 per cylinder)

Cooling: Water-cooled

Starting: Electric

Applications:

Small construction machinery (mini excavators, loaders)

Agricultural machinery (small tractors, harvesters)

Light commercial vehicles

Small generator sets

We also offer a full range of Cummins engines, including 4BTA3.9, 6BT5.9, 6CTA8.3, 6LTAA8.9, QSB4.5, QSB6.7, QSL8.9, QSZ13, QSM11, QSX15, NTA855, and more, to meet the power needs of various equipment. We provide a one-stop solution to ensure your equipment always maintains optimal performance.