Supco Universal SGR4001 Gas Range Ignitor. This is a round style ignitor. This ignitor has a range of 3.2A to 3.6A. This part is approximately 4-1/2" long. The oven ignitor glows white hot to ignite the gas for the oven burner. This oven ignitor is a replacement for Viking PB040001.
Possible Repair Solution For:

Little heat when baking, no heat when baking, not heating evenly, element will not heat, will not start, gas smell.
 
Please Note: This is intended as a guideline only, as other items can cause the same symptoms.
 
This part is also known as an igniter.
The appliance this part fits is also referred to as a stove, oven, cooktop, wall oven, or range oven.