LED Side Marker Light 3731020C6100 DFM DongFeng – OEM Front Position Lamp for Heavy-Duty Trucks

When your DongFeng heavy-duty truck needs a reliable right-front side marker light that performs flawlessly through thousands of kilometers, the LED Side Marker Light 3731020C6100 stands ready to deliver. Engineered as a genuine OEM replacement for DFM DongFeng trucks, this LED front position lamp combines high-brightness illumination with rugged, fully sealed construction — ensuring your fleet stays visible, compliant, and safe in every operating condition. Whether you're sourcing for new vehicle assembly, accident repair, or routine maintenance, this marker light offers the exact fit, proven durability, and competitive pricing that procurement managers demand.

Key Features and Benefits of the LED Side Marker Light 3731020C6100

This DongFeng LED side marker light is more than just a bulb — it's a precision-engineered safety component that works tirelessly to protect drivers and cargo alike. Here's what sets it apart:

• Genuine OEM Specification: Manufactured to match the exact dimensions, connector type, and optical output of the original DongFeng part number 3731020C6100, guaranteeing a perfect bolt-on installation with zero modifications.
• High-Brightness LED Technology: Utilizes advanced LED chips that produce superior luminous intensity compared to traditional incandescent bulbs, significantly improving side visibility during nighttime driving and low-light conditions.
• Ultra-Low Power Consumption: LED light sources draw minimal current from the vehicle's electrical system, reducing alternator load and contributing to overall fuel efficiency across your fleet.
• Fully Sealed Transparent Housing: The ribbed-design polycarbonate lens and sealed housing construction achieve excellent IP-rated waterproof and dustproof performance, resisting rain, mud, road salt, and high-pressure washing.
• Extended Service Life: With a rated lifespan exceeding 30,000 hours, this LED marker light dramatically reduces replacement frequency and associated maintenance downtime — a critical advantage for long-haul operations.
• Vibration and Shock Resistance: Solid-state LED construction contains no fragile filaments, making it inherently resistant to the constant vibrations encountered on construction sites and rough road surfaces.
• Instant-On Illumination: Unlike halogen alternatives, this LED lamp reaches full brightness immediately upon activation, providing instant visibility to surrounding traffic.

In addition, every unit undergoes strict quality control testing before shipment, so you can confidently install it knowing it meets the demanding standards of DongFeng's original equipment specifications. Explore our full range of truck electrical system parts for more lighting and wiring solutions.

Technical Specifications

Accurate specifications matter when you're sourcing parts for a specific truck model. The following table provides the verified technical parameters for the LED Side Marker Light 3731020C6100 DFM DongFeng:

Application Scenarios – Where This LED Side Marker Light Belongs

The LED Side Marker Light 3731020C6100 is specifically designed to fit the following DongFeng heavy-duty truck series:

• DongFeng Tianlong Flagship KX ( KX) – China VI emission standard
• DongFeng Tianlong GX ( GX) – China VI emission standard
• DongFeng Tianlong KL ( KL) – China VI emission standard

Installation Position

This marker light installs on the right-front fender panel or bumper side of the cab. As a front-position LED marker lamp, it serves a critical safety function by clearly indicating the vehicle's right-side contour and overall width to other road users.

Functional Purpose

During nighttime driving, dusk, dawn, or any low-visibility environment, this lamp actively marks the truck's right-side boundary. Consequently, it enhances lateral visibility and significantly improves road safety for both the truck driver and surrounding traffic.

Common Use Cases

1. New Vehicle Assembly (OEM): Factory installation on newly manufactured DongFeng trucks destined for domestic and export markets.
2. Accident Damage Replacement: Direct replacement after collision damage to the right-front lighting assembly.
3. Aging and Wear Replacement: Scheduled replacement when the original lamp shows reduced brightness, lens yellowing, or seal degradation.
4. Routine Maintenance: Preventive replacement during periodic vehicle inspections to maintain compliance and safety standards.
5. Export Vehicle Assembly (CKD/SKD): Component supply for DongFeng truck assembly operations in overseas markets.

For the complete catalog of DongFeng truck components, visit our dedicated DFM DongFeng Truck Parts brand page.

OEM/ODM Capability – Tailored to Your Business Needs

At Mettlead, we understand that different markets have different requirements. That's precisely why we offer flexible customization options alongside our standard OEM-replacement parts:

• White-Label Packaging: Receive products in neutral packaging, ready for your own branding and distribution channels. This is ideal for distributors and wholesalers building their own aftermarket brand identity.
• Custom Packaging: We can produce parts with your company logo, part numbers, and packaging design — helping you strengthen brand recognition in your local market.
• Bulk Order Pricing: As a factory-direct supplier based in China, we eliminate middlemen and pass genuine cost savings directly to you. The more you order, the more competitive your per-unit cost becomes.
• Strict Quality Control: Every LED Side Marker Light undergoes rigorous testing — including waterproof testing, vibration testing, and continuous illumination burn-in — before it leaves our facility.
• Fast and Reliable Delivery: With established logistics partnerships, we ensure your orders reach you on schedule, whether by air freight for urgent needs or sea freight for cost-optimized bulk shipments.

Furthermore, we welcome international buyers to visit our facility for on-site inspection and quality verification. This transparency builds the trust that long-term partnerships require.

Frequently Asked Questions (FAQ) – LED Side Marker Light 3731020C6100

Q1: Is this LED Side Marker Light 3731020C6100 a direct fit for my DongFeng truck?

Yes. This LED side marker light is manufactured to the exact OEM specifications of part number 3731020C6100. It directly replaces the original lamp on DongFeng Tianlong KX, GX, and KL series trucks (China VI models) without any wiring modifications or adapter brackets. Simply remove the old unit and bolt the new one into place.

Q2: What is the expected lifespan of this LED side marker light?

Thanks to its advanced LED chip technology, this marker light delivers a rated lifespan of over 30,000 hours of continuous operation. In practical terms, this means it can last the entire service life of most trucks under normal operating conditions — far outlasting traditional incandescent alternatives.

Q3: Can this LED marker light withstand harsh weather and road conditions?

Absolutely. The fully sealed housing achieves an IP67 waterproof and dustproof rating, which means it resists heavy rain, snow, mud splash, road salt, and even high-pressure jet washing. Additionally, it operates reliably across an extreme temperature range of -40°C to +85°C, making it suitable for tropical, desert, and arctic environments alike.

Q4: Will this LED lamp cause any electrical issues with the truck's system?

No. This LED side marker light is designed for 24V DC truck electrical systems and draws significantly less current than the original incandescent bulb. It does not require any load resistors or CAN-bus adapters. The plug-and-play connector matches the OEM harness perfectly.

Q5: How does LED compare to the original halogen/incandescent marker light?

LED technology offers several measurable advantages over incandescent bulbs: approximately 80% lower power consumption, 10x longer lifespan, instant full-brightness activation, superior vibration resistance (no filament to break), and brighter, more uniform light output. These benefits translate directly into lower maintenance costs and improved safety.

Q6: What is the minimum order quantity (MOQ) for this part?

We offer flexible MOQ options to accommodate both small repair shops and large fleet operators. Please
contact us with your required quantity, and our team will provide a tailored quotation within 24 hours.

Q7: Is the lens color amber or clear on this front marker light?

This LED Side Marker Light 3731020C6100 features an amber (yellow) light output through a transparent ribbed lens, which is the standard configuration for front-position marker lamps on DongFeng heavy-duty trucks. The ribbed lens design enhances light diffusion for maximum wide-angle visibility.

Ready to Source Your LED Side Marker Light 3731020C6100?

Stop searching and start saving. As a trusted factory-direct supplier of DongFeng truck parts, Mettlead delivers the quality, pricing, and reliability your business depends on. Whether you need 10 pieces or 10,000, our team is ready to provide a competitive quotation tailored to your specific requirements.

Take the next step today:

• 📩
  Send us your inquiry now — receive a detailed quotation within 24 hours.
• 📦 Ask about bulk pricing, white-label packaging, and custom branding options.
• 🚚 Inquire about express shipping for urgent replacement needs.

Browse our complete selection of DongFeng truck spare parts or explore our full truck electrical system catalog to find everything you need in one place. Your trucks deserve parts that work as hard as they do — and Mettlead delivers exactly that.