Mylinda P Webb , MS September 14, 2020 Appliance: Whirlpool Gas Range WFG320M0BS3 Whirlpool Range Wfg320m0bs3: Oven ignitor. How to replace Oven Igniter. I bought a replacement ignitor for my oven. I took out the old one and was able to install the new one with no problem. Super easy and didn’t take long at all. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes