Navistar Inc. said today, Feb. 1, it has halted production of its Class 8 truck models and will sustain a profit hit because of a part recall from one of its suppliers.

At a stock analyst briefing, Navistar said it stopped Class 8 truck production in mid-December until the problem can be remedied.

It appears the affected part is a Bendix ATR-6 valve used in traction control or stability control systems manufactured by Bendix Commercial Vehicle Systems between Dec. 2, 2010, and Jan. 18. At temperatures at or below zero degrees Fahrenheit, internal leakage could develop that would result in pressure being applied to a service brake circuit, according to a posting on the Bendix website. This pressure could cause “intermittent or, in isolated cases, continuous brake application.” The notice says the ABS would still work if this occurs.

The defect also could affect the ATR-6 valve used in replacement of ATR-1, ATR-3 and ATR-6 valves if the replacement was manufactured during the specified dates, the company’s posting says.

Navistar told analysts it will retrofit all of its trucks on the road that have the affected part.

A Bendix spokesperson said the affected part was used in truck production at Navistar, Paccar and Volvo, but not including Mack Trucks. She said the recalled part was used in 50,000-60,000 vehicles.