American Axle & Manufacturing Holdings’ fourth-quarter net income rose to $319.9 million, or $4.21 per share — which included a $337.5 million tax benefit — from $31.1 million, or 41 cents, a year earlier.

Eaton Corp. said Tuesday its fourth-quarter earnings fell 50% on charges related to its $13 billion acquisition of Ireland-based Cooper Industries.

Meritor Inc. reported a loss for its fiscal first quarter, citing weaker conditions outside of North America.

Two trucking industry component suppliers disclosed their preliminary 2012 results this week.

Truck component maker Meritor Inc. said its fiscal fourth-quarter earnings declined from a year ago and that it will cut its global workforce by about 800 jobs due to weaker U.S. and international markets.

Although natural gas has taken some of the limelight away from hybrid drivetrains for trucks, Tier One component supplier Eaton Corp. said it is still committed to electric and hydraulic hybrids, and announced a research plan to reduce the size of hybrid batteries by up to 50%.

Don Stebbins, CEO of vehicle components maker Visteon Corp., announced his resignation from the company, which has been the subject of takeover speculation, Bloomberg reported.

Meritor Inc.’s fiscal third-quarter operating profit improved, the truck and auto components maker said Wednesday.

Accuride Corp. posted a second-quarter loss but reported positive operating income for the period.

Truck and auto component maker Dana Holding Corp.’s second-quarter profit improved on higher North American production levels, the company said Thursday.