Genuine Mercedes 278 180 01 75 Oil Temperature Regulator M278 V8 Engine

The Genuine Mercedes-Benz 278 180 01 75 Oil Temperature Regulator (also referred to as an oil temperature sensor) is an OEM replacement component engineered specifically for the Mercedes-Benz M278 twin-turbocharged V8 engine platform. This part plays a critical role in the engine's thermal management system, providing the ME-SFI engine control unit (ECU) with accurate oil temperature data to regulate the variable-flow oil pump and protect the engine under demanding operating conditions.

The M278 engine family features a sophisticated two-stage variable oil pump system. Accurate oil temperature monitoring is essential to this system's function, ensuring proper oil pressure delivery, piston cooling nozzle activation, and overheating protection across all load states. A faulty or failed oil temperature regulator can trigger fault codes and compromise the engine's lubrication and thermal management strategies.

Key Features:

• 100% Genuine Mercedes-Benz OEM part — not aftermarket or remanufactured
• Manufacturer Part Number (MPN): 278 180 01 75 (also referenced as A2781800175 or A 278 180 01 75)
• Designed for the Mercedes-Benz M278 4.7L twin-turbocharged V8 engine
• Supports the engine's thermal management and variable oil pump control systems
• Manufactured to exact Mercedes-Benz engineering specifications and tolerances
• Direct OEM replacement — no modifications required for installation
• Approximate weight: 0.04 kg (0.09 lbs); approximate dimensions: 5 cm L x 3 cm W x 3 cm H

Choosing a genuine OEM part ensures correct fit, function, and long-term reliability for your Mercedes-Benz. This regulator is a direct, drop-in replacement that restores proper oil temperature monitoring and protects engine performance on M278-equipped vehicles.