The M297 is a V12 engine produced by Mercedes-Benz, from 1997 to 2016.

[1] The M297 is based on the M120 engine but has been tuned by AMG for use in high-performance sports cars.

It was offered as a 6.9 L (6,898 cc) version with a bore and stroke of 89 mm × 92.4 mm (3.50 in × 3.64 in), respectively, and was only available in the road-legal version of the CLK GTR.

[2] A 7.3 L (7,291 cc) unit was also available featuring a larger bore of 91.5 mm (3.60 in), and was used in Pagani Zonda models until 2016.

[3] 464 kW version 488 kW version 450 kW version M297, the most powerful iterations replaced the M120 in the Pagani Zonda, powering every single version of the supercar (there were many) built from 2002 onwards.