Cooper Tire Selling Auto Parts Unit  NEW YORK (Reuters) - Cooper Tire and Rubber Co. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=CTB.N target=/stocks/quickinfo/fullquote"&gt;CTB.N&lt;/A&gt; on  Friday said it agreed to sell an automotive parts business to  two buyout firms for about \$1.17 billion, the latest private  equity purchase in the sector.