List of O'Reilly Auto Parts Stores in San Marcos, TX Outlet Note Regular Brands O'Reilly Auto Parts Texas San Marcos Rating 4.7 based on 56 votes Products Belts Lighting Tires Battery Wheels Electrical Brakes Heating Engine Parts Filters Oil Fluids Waxes Washes NameAddressPhone Name/Address/Phone O'Reilly Auto Parts outlet - San Marcos 803 S Guadalupe St (512) 396-3801 People Also Viewed