Note: This question is for the older version of this part, but we thought you might still find it helpful
On the old defrost heater, from what I can measure from it being broke, the old one measures roughly 17 3/4 and the one you have says 18 in. That would be the same part right, Measured like wood?
Answer Hello Matt! Yes, according to your model number the defrost heater WR51X419 is the correct replacement and will fit your product. Thanks!