Chapter: 3600
Section: 3629
It is permissible to charge against credit cards items which are needed for real emergencies, such as damaged individual spark plugs (not sets), automatic transmission oil, light bulbs, fan belts, windshield wiper blades, cable for battery terminals, gasoline tank caps, tire or tube valve core, etc. ...
https://www.dgs.ca.gov/Resources/SAM/TOC/3600/3629