The following cooperative government contracts typically cover automotive supplies including:

automotive parts
fleet
automotive tools and equipment
tires
car batteries
motor oil
windshield wipers
vehicle lighting
headlights & foglights
breaks
chassis & steering
engine cooling
automotive oil, chemicals & fluid

Purchasing Cooperatives you can work with for Automotive Supplies

BuyBoard

HGACBuy

National Cooperative Purchasing Alliance (NCPA)

OMNIA Partners

Sourcewell