Original BEHR Viscous Fan Clutch and 6-Blade Aluminum Fan Assembly classic Mercedes-Benz W111, W108, and W109 chassis

This is a genuine Original BEHR Viscous Fan Clutch and 6-Blade Aluminum Fan Assembly, factory-equipped on the M116 3.5L V8 engine found in classic Mercedes-Benz W111, W108, and W109 chassis. This heavy-duty mechanical cooling fan utilizes a temperature-sensitive bimetallic strip to engage the fluid coupling, ensuring maximum airflow through the radiator only when engine temperatures rise, thereby saving horsepower and reducing noise at higher cruising speeds. Included in this set is a genuine Original Stamped Steel Radiator Fan Shroud, engineered specifically for the V8-powered (M116 engine) 3.5 models of the classic Mercedes-Benz W111, W108, and W109 chassis. This shroud mounts directly behind the radiator and is absolutely critical for proper engine cooling, as it forces the mechanical engine fan to pull air evenly through the entire radiator core rather than drawing hot air from inside the engine bay.

Key Specifications

• Product Type: Original Equipment (OE) Viscous Fan Clutch & Blade Assembly / Original Equipment (OE) Cooling Fan Shroud

• Manufacturer: BEHR (Clutch marked "BEHR VISCO LÜFTER") / Mercedes-Benz

• OE Part Number Reference: 108 205 10 06 (Stamped on the fan hub center)

• Placement on Vehicle: Engine Bay (Mounted to the rear of the radiator)

• Blade Configuration: 6-Blade Asymmetrical Design (Reduces harmonic resonance/noise)

• Material: Cast Aluminum (Fan Blades & Clutch Housing) and Heavy-Duty Stamped Steel (Shroud)

• Finish: Factory Black Paint (Shroud)

• Hardware Included: Complete assembly including the fan blades bolted to the viscous clutch hub. Bare metal shroud only (Mounting clips/screws are not included).

Key Features

• Authentic OE Stamping: Features the prominent Mercedes-Benz star logo and the "108 205 10 06" part number cast directly into the rear aluminum hub. The shroud features the exact factory-stamped contours and side cutouts designed to clear the specific hose routing and engine accessories of the M116 3.5L V8 powertrain.

• Maximum Cooling Efficiency: Prevents V8 engine overheating by creating a proper vacuum tunnel, ensuring the fan draws ambient air exclusively through the radiator and oil cooler fins.

• Bimetallic Thermal Activation: The front of the clutch features the original BEHR bimetallic strip mechanism which reacts to radiant heat from the radiator to engage the internal silicone fluid coupling.

• Heavy-Duty Construction: Unlike modern plastic replacement fans that become brittle and shatter, this original cast aluminum fan is practically indestructible and highly sought after for authentic restorations. Furthermore, unlike modern brittle plastic shrouds that crack from decades of engine heat cycles, this vintage stamped steel piece offers permanent structural integrity.

• Asymmetrical Blade Design: The uneven spacing of the 6 blades is a specific factory engineering feature designed to break up harmonic noise (the "howling" sound) at high engine RPMs.

• Restoration Ready: Structurally sound with no major bends or rust-through. It is an excellent candidate for a quick scuff and fresh coat of satin black high-temp paint for a concourse-quality engine bay.

Fitment & Applications

• 1969–1971 Mercedes-Benz W111 (280 SE 3.5 Coupé & Cabriolet)

• 1968–1972 Mercedes-Benz W108 (280SE 3.5, 280SEL 3.5)

• 1968–1973 Mercedes-Benz W109 (300SEL 3.5 V8)

• Essential for completing a factory-correct V8 engine bay restoration where missing shrouds frequently lead to overheating issues.

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