Painters Supply Co. will provide two locations in the Denver and Fort Collins areas.
New contract eliminates two-tiered pay system.
As part of the acquisition, Advance Auto will get 1,246 company operated stores and 1,418 independently owned Carquest locations.
International cartel involves wheel hub unit bearings supplied to Toyota.
The US auto industry, already stretching to meet rising demand for cars and trucks, is facing shortages of parts and materials that could limit the number of new vehicles in showrooms later this year and crimp a historic turnaround.