Mercedes-Benz M120 engine


The Mercedes-Benz M120 engine is a naturally aspirated high-performance automobile piston V12 engine family used in the 1990s and 2000s in Mercedes' flagship models. The engine was a response to BMW's M70 V12 engine, introduced in 1987. While the 5-litre BMW unit developed, Mercedes-Benz upped the ante considerably by creating a 6-litre, engine.
The M120 family was built in Stuttgart, Germany. It has an aluminium engine block lined with silicon/aluminium. The aluminium DOHC cylinder heads are 4 valves per cylinder designs. It uses sequential fuel injection and features forged steel connecting rods.
The M120 was eventually replaced by the smaller, lesser-powered, short-lived, SOHC, three valves per cylinder M137 V12 engine. Mercedes ceased production of the M120 because of new emission rules.

E60

This engine developed and of torque for the 6.0 L version. In 1992 only, the M120 engine was offered in North America in format and from 1991-92 in Europe. All other years have the version.
Applications:
A 7.1 L version was also used in the SL 70 AMG, S 70 AMG and CL 70 AMG, and produced 496 PS. Another 7.1 L version with 510 PS was used for SL 72 AMG, S 72 AMG and CL 72 AMG cars.

E73 AMG

There was also a 7.3 L version producing developed by AMG which was used in the SL 73 AMG. The 7.3 L M120 engine was also featured in the AMG-built, S 73 T Kombi, a custom-built W140 S-Class wagon for the Sultan of Brunei. Eighteen units were produced, ten of which went to the Sultan.

M297

In 1997, the FIA GT Championship race car Mercedes-Benz CLK GTR was fitted with the M297 engine, derived from the M120. The 25 road cars, required by the FIA rules and delivered in 1999, had their engine enlarged to 6.9 L.

Pagani Zonda

The Pagani Zonda has used three different capacities of Mercedes-AMG tuned versions of the M120 engine, starting with the untuned 6.0 L for the original Zonda C12 to a 7.0 L version for the C12-S and Zonda GR, then to the 7.3 L for the Zonda S 7.3/Zonda Roadster, and back to the 6.0 L for the Zonda R and the Zonda Revolución. The bore and stroke of the 7.3 L version is.
Applications:
YearModelDisplacementPower output
1999Pagani Zonda C12 or
1999Pagani Zonda C12-S
2002Pagani Zonda S 7.3 / Zonda Roadster
2003Pagani Zonda GR
2009Pagani Zonda R
2012Pagani Zonda R Evoluzione
2012Pagani Zonda Revolución
2014Pagani Zonda R "Revolución Specification"
2021Pagani Huayra R
2024Pagani Huayra R Roadster