Cummins 24 Valve Htt Exhaust Manifold on 2040-parts.com

Mercedes-Benz M-Class

Mercedes-Benz has announced the 2012 M-Class. The third generation off-roader is said to ‘set a new benchmark in the SUV segment’ in terms of design, consumption and comfort. Boasting an array of mechanical and technological enhancements, the M-Class is said to be vastly improved both on and off road.

More Power! Get the details on the potent Porsche 911 GT3 RS 4.0

Porsche has ramped up the already heady performance of the 911 GT3 RS through the adoption of a new, naturally aspirated 4.0-liter version of the company's sturdy, horizontally opposed flat six-cylinder engine. The unit kicks out 50 hp more than the 3.8-liter six-cylinder used in the existing 911 GT3 RS. This mill claims 500 hp at 8,250 rpm, a figure which makes the speedster the most powerful naturally aspirated road-going version of the 911 ever.

GM's Lutz to retire May 1

General Motors Vice Chairman Bob Lutz plans to retire from the automaker effective May 1, according to a statement released by GM on Wednesday. Lutz, 78, had been serving as a senior adviser to GM Chairman and CEO Ed Whitacre after shelving retirement plans to take charge of the automaker's marketing after it emerged from bankruptcy in July 2009. An outspoken executive who both challenged global warming and championed GM's all-electric Volt, Lutz is credited with revitalizing GM's product development efforts after being hired by former GM CEO Rick Wagoner in 2001.