Dongfeng KL truck parts Wiper motor assembly 3741010-C3300

Equipped with a 12V/24V (depending on Dongfeng KL variant) permanent magnet DC motor, the assembly delivers a maximum torque of 8 N·m—sufficient to drive the truck’s large windshield wipers (up to 700mm length) through heavy rain, snow, or mud. The motor features a 3-speed control system (low: 45 cycles/min, medium: 60 cycles/min, high: 75 cycles/min) that matches the original wiper switch settings, allowing drivers to adjust speed based on weather intensity. Unlike low-torque motors that stall under heavy snow, this design maintains consistent operation even with wiper blades loaded with ice, ensuring unobstructed visibility. The motor’s copper windings are rated for continuous duty (up to 2 hours of non-stop use), preventing overheating during prolonged rainy conditions

Built to withstand the harsh operating conditions of commercial trucks—including vibration, temperature fluctuations, and moisture—the motor assembly features a robust design. The housing is made of die-cast aluminum alloy (ADC12) that provides excellent heat dissipation (preventing motor overheating) and resists impact from road debris. The internal gears are precision-machined from hardened steel (HRC 58–62) that resists wear, ensuring smooth power transmission through 500,000+ wiper cycles. The motor’s bearing system uses sealed ball bearings (IP67 rated) that block dust and moisture, eliminating friction-induced noise and extending bearing life by 300% compared to open bearings. Unlike plastic-geared motors that fail within 100,000 cycles, this rugged construction ensures reliable operation for 3+ years

Engineered to avoid electrical interference and ensure safe operation, the assembly includes multiple protective mechanisms. The motor’s electrical circuit features an EMI (Electromagnetic Interference) filter that prevents voltage spikes from disrupting the truck’s other electronic systems (e.g., VECU, radio). It also includes built-in protection against overcurrent (via a 15A thermal fuse) and overvoltage (via a transient voltage suppressor), preventing motor damage from electrical surges common in truck electrical systems. For moisture protection, the motor housing is sealed with a rubber gasket (IP6K6 rated) that resists water intrusion during high-pressure washing or heavy rain, avoiding short circuits. Unlike unprotected motors that fail due to water damage, this design ensures safe operation in wet environments

Designed for efficient replacement in repair shops or fleet yards, the motor assembly simplifies installation with user-friendly features. It uses the same mounting bolts (4 M8×20mm) as the original motor, requiring no drilling or bracket modification—installation takes 30–45 minutes with standard hand tools. The 6-pin electrical connector is keyed to prevent reverse insertion, eliminating wiring errors. The motor comes pre-lubricated with high-temperature grease (stable from -40°C to 150°C), requiring no additional lubrication during its service life. To ensure reliability, each unit is manufactured in an IATF 16949 certified facility and undergoes strict testing: torque output verification, speed control validation, waterproof testing (IP6K6), and vibration testing (200,000 cycles at 10–2,000 Hz). Backed by a 24-month warranty against manufacturing defects (e.g., gear failure, bearing wear, or electrical malfunction), it provides Dongfeng KL truck owners with reliable wiper performance and long-term peace of mind