The Shaanxi Automobile Delong F3000 6 × 4 380 horsepower heavy-duty tractor (SX4255NT384) is a classic heavy-duty vehicle designed specifically for mining, sand and gravel, slag, mountainous areas, and harsh construction conditions. The whole vehicle relies on the German MAN technology chassis, with a solid structure, strong load-bearing capacity, low failure rate, and convenient maintenance. It is the best-selling cost-effective tractor head for domestic engineering transportation and overseas exports. The power is equipped with Weichai WP12.380E40 diesel engine, with a large displacement of 11.596L, rated at 380 horsepower, and a maximum torque of 1800N · m. It has abundant low-speed torque, strong starting ability under heavy loads, strong climbing ability, and no stuffiness or power loss during full load transportation. Equipped with exhaust brake and cylinder brake as standard, stable and safe braking on long downhill slopes, increased cooling system to adapt to high temperatures and continuous high-intensity operations, mature and durable power chain, and extremely versatile accessories. The transmission is matched with a Fasttech 12JSD200T-B heavy-duty 12 speed iron shell gearbox, which has a large load-bearing torque and is suitable for mountainous and rough road heavy load conditions. Equipped with a reinforced clutch with a diameter of 430mm, it is wear-resistant and durable. The entire vehicle comes standard with dual differential locks between the bridge and wheels, providing excellent off-road capabilities on muddy, steep slopes, and soft roads, with strong passability. The chassis adopts a double layered thick beam with a width of 850mm and a thickness of 8+7mm. The whole vehicle is resistant to torsion and deformation, suitable for long-term high-strength heavy loads. The front axle is a 7.5-ton MAN reinforced steering axle, and the rear axle is equipped with a 16 ton two-stage wheel side reduction heavy-duty axle, paired with a high speed ratio of 4.875-5.73, specially tuned for heavy-duty climbing. The suspension adopts thickened multiple steel plate springs, combined with thickened stabilizer bars and reinforced horse riding cards, which are earthquake resistant and stable, and are not easily broken or collapsed when pulling ore and slag for a long time. The braking system is equipped with four channel ABS, cut-off brake, enlarged air reservoir, and heavy-duty extended brake cylinder, ensuring stable and safe heavy-duty braking. Standard 400L aluminum alloy fuel tank, optional dual fuel tank to enhance endurance, standard 12.00R20 heavy-duty steel wire tire, wear-resistant and durable on construction sites. The cabin is a F3000 suspended two bedroom cabin, with optional flat top and high top options. It is equipped with air conditioning, shock absorber seats, electric doors and windows, and central locking. The circuit is simple, stable, and has a low failure rate, making it suitable for long-term construction work. The whole vehicle is sturdy and durable, with outstanding heavy load capacity, stable three major components, and low maintenance costs. It is the preferred classic heavy-duty tractor for short distance heavy load, engineering earthwork, mining stone materials, and foreign trade exports.