Hella 003944071 Flasher Unit 24V 3+1x21W Heavy-Duty Turn Signal Relay

The Hella 003944071 is a heavy-duty electronic flasher unit designed for 24-volt electrical systems commonly found in commercial trucks, buses, trailers, and other large vehicles. This flasher relay supports a 3+1 x 21W load configuration (equivalent to 8 x 21W total), making it suitable for multi-circuit turn signal and hazard warning applications.

Key Features:

• Operating Voltage: 24V DC — engineered for commercial and heavy-duty vehicle electrical systems
• Load Capacity: 3+1 x 21W (8 x 21W) — supports multiple indicator lamp circuits simultaneously
• 4DW Terminal Configuration: Four-terminal design for straightforward integration into existing wiring harnesses
• Produces a consistent, reliable flash rate for turn signal and hazard warning systems
• Manufactured by Hella, a globally recognized OEM and aftermarket supplier of automotive lighting and electronics
• Built to withstand the vibration, temperature cycling, and electrical demands of commercial vehicle environments
• Direct-fit replacement for compatible OEM flasher units in trucks, buses, coaches, and trailers

Hella is a trusted OEM supplier to leading commercial and passenger vehicle manufacturers worldwide. The 003944071 flasher relay delivers dependable performance and longevity, helping maintain the safety-critical function of vehicle turn signal and hazard warning systems. Also referenced as Hella part number 3944071.