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Engine maker Cummins Inc. and component manufacturer Eaton Corp. unveiled a new powertrain package for the North American heavy-duty truck market that they said will boost fuel economy by 3% to 6%.

Accuride Corp. posted a $156.5 million fourth-quarter loss, citing a charge related to its Gunite division.

Component supplier Commercial Vehicle Group said Friday that CEO Mervin Dunn will retire this year but will remain in the post until a successor is appointed.

Truck makers and suppliers say they will be among the industries hardest hit by a new federal rule that could cost U.S. businesses nearly $8 billion to search out and shed “conflict minerals” originating from central Africa.

Vehicle parts manufacturer Visteon Corp. posted a fourth-quarter profit, improving upon the loss it experienced during the same time in 2011.

Ritchie Bros. Auctioneers said its fourth-quarter profit slipped from a year ago to $22.1 million, or 21 cents per share, from $26.8 million, or 25 cents, a year ago.

Eaton Corp. said Wednesday its board has approved an 11% increase in its quarterly cash dividend.

Cooper Tire and Rubber Co. said it posted a lower fourth-quarter profit and a lower full-year income.

Every month or so, Dustin Stricker, the maintenance manager at R.E. West Transportation in Ashland City, Tenn., sits down with representatives from South Carolina-based Michelin North America and the local Tire Centers in Nashville to do autopsies on truck tires.

Truck and auto component maker Dana Holding Corp. said Thursday its fourth-quarter profit rose from a year ago, though its revenue declined.