July 21 (Bloomberg) -- Nissan Motor Co. is voluntarily recalling 169,202 Sentra sedans in the U.S. to replace a brake cylinder that may leak fluid.

The recall involves 2007 and 2008 model-year Sentras, according to a letter from Tokyo-based Nissan on the Web site of the National Highway Traffic Safety Administration.

An irregularity in some brake cylinders may lead to a gap that allows fluid to leak into the brake-booster assembly, causing the brake-warning light to illuminate. If the warning lamp is ignored, one of the brake circuits on the vehicle may not operate as designed, increasing the risk of a crash.

Nissan will begin notifying owners starting July 23, according to the letter. Nissan will replace the cylinder, made by supplier Robert Bosch GmbH, on any affected vehicles at no charge to owners.

The Sentra is Nissan's second-best selling vehicle in the U.S. after the Altima. Sales of the sedan rose 3.5 percent to 59,104 in the first six months, according to Autodata Corp. in Woodcliff Lake, New Jersey.

There have been no accidents or injuries related to the affected part, said Colin Price, a spokesman in Nissan's North American headquarters in Nashville, Tennessee. He declined to say how much the recall would cost.

To contact the reporter on this story: Greg Bensinger in New York at gbensinger1@bloomberg.net

Last Updated: July 21, 2008 16:10 EDT