Cylinder Group 300-0239/105-2440/382-2003/417-0582

Articulated/Off Highway Caterpillar 777G

Steering Cylinder Bore 88,90 Stroke 441,00 Hydraulic Cylinder

3000239/1052440/3822003/4170582

35,5 kg

Compatible Brand: Caterpillar

Part Number: 417-0582 (4170582)

Superseded / Interchange Numbers: 105-2440 (1052440), 300-0239 (3000239), 382-2003 (3822003)

Part Name: Off-Highway Truck Steering Hydraulic Cylinder Group

Technical Specifications: Bore: 88.90 mm / Stroke: 441.00 mm / Weight: ~35.5 kg / Hydraulic Cylinder

Compatible Machinery: Caterpillar Off-Highway / Mining Trucks (777G series)

What It Does:

Serves as the steering hydraulic actuator mounted on the front steering linkage of Caterpillar 777G off-highway mining trucks. Powered by high-pressure fluid from the steering hydraulic system, it extends and retracts to actuate the steering arms, enabling precise front-wheel directional control and maneuvering.

Importance:

Critical for maintaining precise steering responsiveness, directional stability, and safe vehicle control during heavy haulage operations in demanding mining and quarry environments. Built with a robust 35.5 kg heavy-walled barrel and high-strength forged rod, it effectively absorbs dynamic side-thrust loads, road impacts, and wheel feedback stress, while advanced internal seals prevent fluid bypass under continuous high-pressure steering demands.

As Seçkin Makine, we manufacture this product as an aftermarket item fully equivalent to the original specifications in terms of raw materials, technical dimensions, and performance characteristics. This product comes with a 1-year warranty from the invoice date.