Dongfeng DFAC Rear combination lamp assembly 37V66-73020

Designed to consolidate critical rear-end lighting functions, this assembly typically includes three core features (varies by OE configuration): bright red tail lamps (for constant visibility), amber turn signals (for directional communication), and high-intensity red brake lamps (for emergency stopping alerts). Some variants may also integrate reverse lamps (with white light for low-light backing) or reflectors (for passive visibility in dark conditions). The light distribution is calibrated to meet commercial vehicle safety standards, ensuring each function’s beam is focused, visible from long distances (up to 200m for brake lamps), and free of glare that could distract trailing drivers

Constructed to withstand the harsh demands of commercial operations, the lamp’s housing is made from impact-resistant ABS plastic (reinforced with glass fiber) that resists cracking, warping, or fading from road debris, minor collisions, or prolonged exposure to sunlight. The lens uses high-transmittance polycarbonate (PC) with an anti-UV coating—preventing yellowing (which reduces light output by up to 30% over time) and ensuring clarity even after years of use. The internal electrical components (bulbs, wiring, sockets) are sealed with a IP67-rated waterproof design, protecting against rain, snow, mud, or pressure washing, and avoiding short circuits that cause premature failure

This rear combination lamp assembly (37V66-73020) meets or exceeds international automotive safety benchmarks, including ECE R7 (for rear lamps), ECE R19 (for brake lamps), and ISO 16949 (for manufacturing quality). Each unit undergoes rigorous pre-delivery testing: light output intensity testing (to verify brightness meets standards), waterproof immersion testing (48 hours at 1m depth), vibration testing (to simulate 100,000km of rough road use), and temperature cycling testing (-40°C to 80°C). Compliance ensures the lamp meets vehicle inspection requirements in regions like Asia, Europe, and North America, while avoiding safety risks associated with substandard aftermarket lamps (e.g., dim brake lights, non-functional turn signals)

Optimized for quick, hassle-free maintenance, the assembly comes with all OE-matching mounting hardware (screws, nuts, washers) and features a “bolt-on” design that aligns with the vehicle’s existing rear body mounting points. The electrical connector is a plug-and-play type—simply disconnect the old lamp’s harness and attach the new one, no wiring modifications required. Most fleet technicians or DIY users can complete installation in 15–25 minutes using only basic hand tools (socket wrench, screwdriver), minimizing vehicle downtime (critical for commercial fleets that rely on daily operation). The secure mounting system ensures the lamp stays firmly in place, even during high-speed driving or off-road conditions, reducing rattling or loosening over time