Plains Plains Auto Parts Address308 E. Railroad StreetPlains, MT 59859 Phone (406) 826-3760 Store OwnerRoger Collins Subscribe and Save Facebook Twitter Youtube SHOP ONLINE VISIT WEBSITE HoursMonday8AM–5:30PMTuesday8AM–5:30PMWednesday8AM–5:30PMThursday8AM–5:30PMFriday8AM–5:30PMSaturday8AM–4PMSundayClosed Monthly Savings