Viscous coupling – Mercedes R129 W140 C140 – M119

Description

Viscous coupling – Mercedes R129 W140 C140 – M119

Thermally controlled viscous coupling for the radiator fan of various Mercedes models with the M119 V8 petrol engine.

The viscous coupling regulates the drive of the radiator fan depending on the temperature. When extra cooling is required, the coupling drives the fan more strongly. In the event of a defective or worn viscous coupling, the fan may be insufficiently driven, causing the engine temperature to rise, especially at low speed, idling, or during high ambient temperatures.

Suitable for Mercedes models

Mercedes R129

• 500 SL – 129.066 – M119.960, M119.972 – 09.1989 to 08.1992 – 240 kW – 326 hp
• SL 500 – 129.067 – M119.972, M119.982 – 09.1992 to 10.2001 – 235 kW – 320 hp

Mercedes W140

• 400 SE, 400 SEL – S 420 – 140,042, 140,043 – M119,971 – 02.1991 to 10.1998 – 210 kW – 286 hp
• S 420 – 140.042, 140.043 – M119.971, M119.981 – 01.1993 to 10.1998 – 205 kW – 279 hp
• 500 SE, 500 SEL – 140.050, 140.051 – M119.970 – 02.1991 to 10.1998 – 240 kW – 326 hp
• S 500 – 140.050, 140.051 – M119.970, M119.980 – 01.1993 to 10.1998 – 235 kW – 320 hp

Mercedes C140

• 420 SEC – CL 420 – 140.063 – M119.971, M119.981 – 10.1994 to 02.1999 – 205 kW – 279 hp
• 500 SEC – CL 500 – 140.070 – M119.970, M119.980 – 10.1992 to 12.1999 – 235 kW – 320 hp

Suitable for Mercedes engines

• M119960
• M119970
• M119971
• M119972
• M119980
• M119981
• M119982

Specifications

1. Part: radiator fan viscous coupling
2. Operation: thermal
3. Type: fluid friction clutch
4. Diameter: 165 mm
5. Height: 53 mm

Additional information

1. The viscous coupling regulates the drive of the radiator fan depending on the temperature.
2. A worn viscous coupling can cause insufficient fan cooling.
3. Problems are often first noticeable when idling, driving slowly, or at high outside temperatures.
4. When replacing, also check the radiator fan and mounting for damage and wear.
5. If the engine temperature is too high, always check the entire cooling system and do not assume that only the viscous coupling is defective without a diagnosis.

Always check before purchase and installation whether the part is suitable and equivalent based on photos, description, and specifications; installed or used parts cannot be returned.