Mercedes-Benz M137 engine


The Mercedes-Benz M137 engine was a naturally aspirated, SOHC 60° V12 engine, with three valves per cylinder. It was built to replace the larger and heavier, yet more powerful, DOHC, four valves per cylinder, naturally aspirated, 6.0 L M120 V12 unit. The M137 was used briefly between 1998 and 2002 for the W220 S-Class and C215 CL-Class. The architecture was similar to M112 and M113 engines and was designed to match the overall dimensions of a V8 unit with an undersquare internal measurements. The crankcase was cast in a lightweight alloy with "Silitec" cylinder liners to save weight. The new powerplant was 80 kg lighter than its predecessor and offered better fuel consumption thanks to a cylinder deactivation technology. Both displacement variants have 10:1 compression ratio.
The M137 was replaced by the more powerful twin-turbocharged M275 engine.

E58

Mercedes introduced M137 engine in its 5.8-litre form in S 600 and CL 600 models. The internal measurements of of bore and stroke translated to a total displacement of. The resulting power output was at 5500 rpm and torque figures of at 4250 rpm.
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In 2001 Mercedes and AMG introduced a series of special high-output models equipped with a larger-displacement M137 engine. Cars were available through AMG dealers only and sold to selected European and Asian customers. The 2001 S 63 AMG was produced in only 70 units. The 2001 CL 63 AMG existed in only 26 examples and the rarest of all was the 2002 G 63 AMG with only five units produced. The total displacement of was thanks to an internal measurements of. The resulting power output was at 5500 rpm and torque figures of at 4400 rpm.
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