Built for quarry and aggregate applications, the YL configuration is designed as a 3-pass match option for loading aggregate and other materials into on-highway trucks. The package includes a heavier counterweight, wide low-profile tires and rims, reinforced frame and optimized bucket size of 7.2 yd3 (5.5 m3).

Komatsu DBA127 engine is compliant with U.S. EPA Tier 4 Final emissions. Redesigned and optimized with many advancements, such as proprietary technology to eliminate exhaust gas recirculation (EGR). This engine is designed for lower fuel consumption and more power and torque at lower engine speeds.

A pressurized, large, four-pillar cab is designed to provide a quiet operator environment and features a new intuitive console design. Visibility was increased by 21% compared to the previous model by adding a lower glass area and eliminating the two rear pillars.

Continuously variable transmission designed for high efficiency. Combining HST and the mechanical transmission in a dual power path allows excellent controllability and high transmission efficiency while promoting low fuel consumption. Dynamic braking of the transmission eliminates a separate brake cooling system.

Compared to WA480-8, this machine can help reduce maintenance costs by up to 21% due to an extended change interval for hydraulic oil and oil filters from 2,000 to 6,000 hours and an extended KDPF cleaning interval from 4,500 to 8,000 hours. Also, oil-drain intervals can be extended up to 1,000 hours.

AFJS articulates the vehicle body according to the tilt angle of the joystick. The joystick operation is converted into electrical signals for a smooth steering feel with less operating force, which may reduce wrist strain. Operators can adjust this low-effort drive-by-wire system. A steering wheel option is still available.

Work equipment speed can be controlled with levers. Engine speed is automatically optimized based on lever operation without pressing an accelerator pedal. This separates the transmission control from work equipment, simplifies operation and reduces brake wear during hopper or truck loading.

Two rear-side radars are designed to detect objects and working machines approaching in the direction of travel while reversing the machine. A warning buzzer and indicator light alert the operator of a potential collision. False detection reduction functions help maintain uptime while promoting zero harm.

The optimized cross-sectional shape is designed for digging efficiency. The material is scooped and rolled up along the inclined floor of the bucket. Combining this redesigned bucket and the auto digging system can help boost productivity, especially for newer operators.