Before spending money to replace an old BBQ grill, consider refurbishing the grill with new replacement BBQ grill parts. Common replaceable parts include burners, grates, warming racks, control knobs and ignition modules. Many parts are inexpensive and simple to replace with basic set of hand tools. Cleaning and proper maintenance will help keep older grills working properly. Finding parts will be easier if the correct make and model of the grill is known.