The Mercedes-Benz M 120 engine is a naturally aspirated high-performance automobile piston V12 engine family used in the 1990s and 2000s in Mercedes-Benz' 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 M 120 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 (SFI) and features forged steel connecting rods.
The M 120 was eventually replaced by the smaller (5.8 litres), lesser-powered, short-lived, SOHC, three valves per cylinder M 137 V12 engine. Mercedes ceased production of the M 120 because of new emission rules.
E 60
This engine developed and of torque for the 6.0 L version. In 1992 only, the M 120 engine was offered in North America in format and from 1991-92 in Europe. All other years (1993–1999) have the version.
Applications: 1991–1998 600 SE / 600 SEL / S 600 (W140) 1992–1999 600 SEC / S 600 Coupé / CL 600 (C140) 1992–2001 600 SL / SL 600 (R129) 1991 C112 Concept 2004 Chrysler ME-412 1993 Isdera Commendatore 112i 2005 Laraki Borac 2003 Laraki Fulgura 2000 Lotec Sirius (with twin-turbo version of M 120 engine) 1996–1999 Mega Monte Carlo 1992–2000 Mega Track
E 70 AMG
A version was also used in the SL 70 AMG, S 70 AMG and CL 70 AMG, and produced . Another version with was used for SL 72 AMG, S 72 AMG and CL 72 AMG cars.
E 73 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 M 120 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.“AMG Gmbh Mercedes-Benz S73 T Kombi: 7.3L V12 Battleship ,” VelocityResource.com January 26, 2011. (Retrieved 2011-02-02.)
M 297
In 1997, the FIA GT Championship race car Mercedes-Benz CLK GTR was fitted with the M 297 engine, derived from the M 120. 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 M 120 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:
Year Model Displacement Power output 1999 Pagani Zonda C12 or 1999 Pagani Zonda C12-S 2002 Pagani Zonda S 7.3 / Zonda Roadster 2003 Pagani Zonda GR 2009 Pagani Zonda R 2012Pagani Zonda R Evoluzione 2012 Pagani Zonda Revolución 2014 Pagani Zonda R "Revolución Specification" 2021 Pagani Huayra R 2024 Pagani Huayra R Roadster
References
See also
List of Mercedes-Benz engines