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 Pagani Zonda has used 3 different capacities, 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 91.5 mm × 92.4 mm (3.60 in × 3.64 in).[3]

AMG engine display at the Pagani factory

Year Model Displacement Power output
1999 Pagani Zonda C12 6.0 L 402 hp (300 kW; 408 PS)[4]
1999 Pagani Zonda C12-S 7.0 L 540 hp (403 kW; 547 PS)[8]
2002 Pagani Zonda S 7.3 7.3 L 547 hp (408 kW; 555 PS)[9]
2003 Pagani Zonda GR 7.0 L 590 hp (440 kW; 598 PS)[10]
2005 Pagani Zonda F 7.3 L 602 hp (449 kW; 610 PS)[11]
2009 Pagani Zonda Cinque 678 hp (506 kW; 687 PS)[12]
2010 Pagani Zonda Tricolore 670 hp (500 kW; 679 PS)[13]
2009 Pagani Zonda R 6.0 L 740 hp (552 kW; 750 PS)[14]
2012 Pagani Zonda R Evoluzione
760 hp (567 kW; 771 PS)[15]

2012 Pagani Zonda Revolución 791 hp (590 kW; 802 PS)[16]

The M120 family is 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 M120 was eventually replaced by the smaller, lesser-powered, short-lived, SOHC, three valves per cylinder, 5.8L, M137 V12 engine. Mercedes ceased production of the M120 because of new emission rules.

Performance Mods:
KW v3 Coilovers
Injen CAI
NWP 75mm throttle body
Motordyne MREV2
Motordyne 5/16th spacer
Motordyne v3 ART pipes
Motordyne Shockwave TDX2 exhaust
Work Wheels - Durandal 10.5

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