Blade 20" #4 420045
Brand: Sears · Fits: 5 models · Reference price: $31.40
420045 is a Sears replacement part (blade 20" #4). Our fitment data lists 5 models that use it.
When to replace this part
General hardware and mounting parts
Symptom: A small mechanical or mounting part has failed, cracked, or gone missing.
Check: Compare the physical shape and mounting points to the original piece, and confirm the exact part number against your model plate before ordering.
Models that use this part
| Model | Brand | Appliance | Parts on file |
|---|---|---|---|
| 8712850 | Sears | — | 37 |
| 8712860 | Sears | — | 35 |
| 8712840X | Sears | — | 34 |
| 8712840 | Sears | — | 30 |
| 8712850X | Sears | — | 27 |
Other parts for model 8712850
If you are repairing that appliance, these are the most model-specific parts on file for the same model.
Reference price and where to compare
The reference price on file for this part is $31.40. It is informational only, not an offer or an Amazon price — RepairKitHub does not sell parts directly.
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