SX4259XD4F1 6X4

Core Technical Specifications

The SX4259XD4F1 6X4 is engineered with the following verified parameters:

At the heart of the SX4259XD4F1 6X4 lies the Weichai WP13.530E62 engine. This 6-cylinder, inline, 12.54-liter diesel engine features high-pressure common-rail fuel injection with a sophisticated after-treatment system (DOC+DPF+Hi-SCR) to meet China VI emission standards. The engine's 530 horsepower and peak torque of 2500 N·m are available across a wide plateau (950–1400 rpm), ensuring the SX4259XD4F1 6X4 delivers consistent pulling power under full load.

This power is efficiently managed by the Fast Q12MO transmission. The 12-speed manual gearbox is known for durability and smooth shifting, and its aluminum alloy housing contributes to overall weight reduction. When paired with a rear axle ratio of 3.7, this driveline combination optimizes fuel economy for long-haul bulk transport, making the SX4259XD4F1 6X4 a cost-effective solution for fleets.

Safety and Driver-Centric Design

The SX4259XD4F1 6X4 prioritizes active safety and driver comfort. The high-roof cab, supported by a four-point airbag suspension system, significantly reduces driver fatigue by isolating the cabin from road vibrations. Electric cab lift functionality simplifies daily maintenance checks.

• ABS anti-lock braking system — standard equipment.
• Forward Collision Warning System (●) — standard.
• Multi-function steering wheel (●) — standard.
• Automatic air conditioning — standard.
• Power windows (●) & electronic central lock (●) — standard.
• Halogen headlights (●) — standard; LED headlights (○) optional.

Configuration Flexibility & Optional Upgrades

Fumin offers a range of optional packages for the SX4259XD4F1 6X4 to tailor the vehicle to specific operational needs:

• “TianJian Zhi Ya” Standard Edition: Maintenance-free battery for reduced downtime.
• “North” Package: 800L dual-cavity aluminum alloy tank with water heating, independent warm air heater, 180Ah low-temperature maintenance-free battery, and heated air main seat — designed for reliable operation in cold climates.
• Expansion Kit: Jack, crowbar, accessory kit for on-the-go repairs.
• Fuel tank options: 1000L aluminum alloy fuel tank (single or parallel with water heating).
• Other options: 90# saddle seat, engineering vehicle bumper, PR101 Spline force tor, S12MO-Aluminum Shell + 3.7, Q12MO-Aluminum Shell + 4.111, and the Classic Edition.

Quality Assurance from Fumin Group

Manufacturing Capability & Technical Infrastructure

Shandong Fumin Trailer Parts Manufacturing Co., Ltd. operates from Shandong Liangshan Boxing Industrial Park — China's largest trailer production base. The company's manufacturing capabilities for the SX4259XD4F1 6X4 are supported by:

• Annual production capacity of 150,000 pieces of semi-trailer axle assemblies (American and German-style).
• Advanced precision CNC processing equipment sourced from domestic and international suppliers.
• Strict and standardized inspection processes ensuring component quality.
• In-house research, design, production, and sales integration.

Component Brand Partners

The SX4259XD4F1 6X4 integrates major drivetrain components from established Chinese manufacturers:

• Engine: Weichai WP13.530E62 — Weichai Power is China's leading heavy-duty diesel engine manufacturer.
• Transmission: Fast Q12MO — Fast Gear is the world's largest commercial vehicle transmission manufacturer by volume.
• Emission standard: China VI (National VI) — currently the most stringent emission standard in China, equivalent to Euro VI.

Origin: Xi'an, Shaanxi Province, China — one of China's major commercial vehicle manufacturing centers.

Frequently Asked Questions About the SX4259XD4F1 6X4

What is the SX4259XD4F1 6X4 designed for?

The SX4259XD4F1 6X4 is designed for bulk material transportation, as specified in its market segment classification. This includes materials such as aggregates, grains, coal, and construction materials.

What engine does the SX4259XD4F1 6X4 use?

It is equipped with the Weichai WP13.530E62 engine — a 6-cylinder, 12.54L inline diesel engine producing 530 horsepower (390 kW), meeting China VI emission standards.

What is the towing capacity of the SX4259XD4F1 6X4?

The maximum towing capacity is 40 tons, with a gross vehicle weight rating of 25 tons.

Where is the SX4259XD4F1 6X4 manufactured?

The vehicle is assembled in Xi'an, Shaanxi Province, China, with key components from Weichai (engine) and Fast (transmission).

What optional configurations are available?

Available options include: North Package (cold climate equipment), Expansion Kit (tools), 1000L aluminum alloy fuel tank, engineering vehicle bumper, and multiple transmission/axle ratio combinations including S12MO-Aluminum Shell + 3.7 and Q12MO-Aluminum Shell + 4.111. Full details are provided in the specifications table above.

Request Technical Specifications or Quotation

For inquiries regarding the SX4259XD4F1 6X4 — including fleet pricing, customization options, or detailed technical documentation — please contact the Fumin Group commercial team.

We respond to all B2B inquiries within 24 business hours.