This premium automotive electronic lot features a genuine, original equipment manufacturer (OEM) RENNtech HHT (Hand Held Tuner) ECU software upgrade module designed for Mercedes-Benz vehicles, carrying manufacturer part number 54 275 1400.

The device connects directly via the factory OBD2 diagnostics port to seamlessly reflash engine management programming between high-performance maps and factory configurations without physical ECU disassembly.

The kit is complete with its custom serial identifier label (ME11350), original presentation boxing, protective foam insulation insert, plush RENNtech branded velvet drawstring storage pouch, and the official printed hardware installation manual.