I was fairly certain it was only the
WHIRLPOOL Defrost Bimetal because the top one popped up.
Though I decided to purchase all three items since the refrigerator was 20 years old
Purchased:
WHIRLPOOL Defrost Heater
WHIRLPOOL Defrost Bimetal
WHIRLPOOL Defrost Timer
Went well excluding needing to splice wires for the
WHIRLPOOL Defrost Bimetal as it is not a direct unplug to re plug connection like the other two items