HOME / ACCESSORIES / MK 21 IGNITORMK 21 IGNITOR18602 Find a dealer The MK 21 ignitor fits broil mate and sterling models without a side burner. ...… FEATURED RECIPE. Grilled Asparagus and Prosciutto Spears.CHECK OUT THESE OTHER GRILL ACCESSORIES.CONTROL KNOB | SMALL1700017000LID THERMOMETER | LARGE1801318013LID THERMOMETER | SMALL1801018010DUAL-TUBE™ BURNER SIGNET™ | SOVEREIGN™1862918629