The

Mercedes-Benz Mercedes-Benz (), commonly referred to as Mercedes and sometimes as Benz, is a German luxury and commercial vehicle automotive brand established in 1926. Mercedes-Benz AG (a Mercedes-Benz Group subsidiary established in 2019) is headquartere ...

M120 engine is a

naturally aspirated Naturally may refer to: ;Albums * ''Naturally!'', an album by Nat Adderley * ''Naturally'' (Houston Person album) * ''Naturally'' (J. J. Cale album) * ''Naturally'' (John Pizzarelli album) * ''Naturally'' (Sharon Jones album) * ''Naturally'' ...

high-performance

automobile A car or automobile is a motor vehicle with Wheel, wheels. Most definitions of ''cars'' say that they run primarily on roads, Car seat, seat one to eight people, have four wheels, and mainly transport private transport#Personal transport, pe ...

piston A piston is a component of reciprocating engines, reciprocating pumps, gas compressors, hydraulic cylinders and pneumatic cylinders, among other similar mechanisms. It is the moving component that is contained by a cylinder and is made gas-tig ...

V12 engine A V12 engine is a twelve-cylinder piston engine where two banks of six cylinders are arranged in a V configuration around a common crankshaft. V12 engines are more common than V10 engines. However, they are less common than V8 engines. The fi ...

family used in the 1990s and 2000s in Mercedes' flagship models. The M120 family is built in

Stuttgart, Germany Stuttgart (; Swabian German, Swabian: ; ) is the capital city, capital and List of cities in Baden-Württemberg by population, largest city of the States of Germany, German state of Baden-Württemberg. It is located on the Neckar river in a fe ...

. It has an aluminium

engine block In an internal combustion engine, the engine block is the structure which contains the cylinders and other components. In an early automotive engine, the engine block consisted of just the cylinder block, to which a separate crankcase was atta ...

lined with silicon/aluminium. The aluminium

DOHC An overhead camshaft (OHC) engine is a piston engine where the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion c ...

cylinder head In an internal combustion engine, the cylinder head (often abbreviated to simply "head") sits above the cylinders and forms the roof of the combustion chamber. In sidevalve engines, the head is a simple sheet of metal; whereas in more modern ov ...

s are 4 valves per cylinder designs. It uses

sequential fuel injection Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All compr ...

(SFI) and features

forged steel Forging is a manufacturing process involving the shaping of metal using localized compressive forces. The blows are delivered with a hammer (often a power hammer) or a die. Forging is often classified according to the temperature at which it ...

connecting rod A connecting rod, also called a 'con rod', is the part of a piston engine which connects the piston to the crankshaft. Together with the crank, the connecting rod converts the reciprocating motion of the piston into the rotation of the cranksh ...

s. The M120 was eventually replaced by the smaller, lesser-powered, short-lived,

SOHC An overhead camshaft (OHC) engine is a piston engine where the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion cha ...

, three valves per cylinder, 5.8L, M137 V12 engine. Mercedes ceased production of the M120 because of new emission rules.

M120 6.0 48v

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 1993–1999 have the version. Applications: * 1992–1999 600 SEC / S 600 Coupé / CL 600 * 1991–1998 600 SE / 600 SEL / S 600 * 1992–2001 600 SL / SL 600

Larger displacement M120s

In 1997, the

FIA GT Championship The FIA GT Championship was a sports car racing series organized by the Stéphane Ratel Organisation (SRO) at the behest of the Fédération Internationale de l'Automobile (FIA). The championship was mostly concentrated in Europe, but throughout ...

race car

Mercedes-Benz CLK GTR The Mercedes-Benz CLK GTR (C297) is a GT1 sports car built and produced by Mercedes-Benz in conjunction with their then motorsport partner AMG. Intended for racing in the new FIA GT Championship series in 1997, the CLK GTR was designed primar ...

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. There was also a 7.3 L version producing developed by AMG which was also used in the SL73 AMG, S73 AMG and CL73 AMG. The 7.3 L M297 engine was also featured in the AMG-built, S73 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. A 7.1 L (7,055 cc) version was also used in the SL70 AMG, S70 AMG and CL70 AMG, and produced . Another 7.1 L (7,055 cc) version with 510 PS (380 kW; 500 hp) was used for SL72 AMG, S72 AMG and CL72 AMG cars.

Pagani Zonda

The

Pagani Zonda The Pagani Zonda is a mid-engine sports car produced by the Italian sports car manufacturer Pagani. It debuted at the 1999 Geneva Motor Show. By 2019, a total of 140 cars had been built, including development mules. Both 2-door coupé and r ...

has used 3 different capacity, 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 F, Zonda Cinque and the Zonda Tricolore, and back to the 6.0 L for the Zonda R and the Zonda Revolucion. The bore and stroke is . Applications:

M120 6.0 48v

Larger displacement M120s

Pagani Zonda

References

See also