Product review (4 stars): Replacement For GE Broil Unit WB44X173, Not A Perfect Fit
I ordered this replacement for my original GE broil unit WB44X173 that had ruptured. The coil of the replacement unit matched the original GE, hence I had no problem fitting it inside the oven. However, the mounting holes on the replacement unit did not match the holes in my oven; they were off by about  1/8 ". I ended up using just one mounting screw to tighten the mounting plate to the back of the oven which is perfectly okay. Also, the mounting screws for the wires had round heads, so you need a very short Phillips screwdriver to be able to tighten them in the oven.
The price for this replacement unit is very reasonable, GE and Sears charge much higher prices for the same replacement part