Parts for 6421 — NCR
We found 10 parts confirmed to fit the NCR 6421.
Compatibility table
| Part # | Part | Also fits | Reference price |
|---|---|---|---|
| CNT00963 | Control | This model only | $332.49 · Amazon |
| 1100644 | F3 /guide | This model only | $31.20 · Amazon |
| EBR42119301 | Home Electronics PCB Assembly | This model only | $202.64 · Amazon |
| 0950378201 | Home Electronics Transformer | This model only | $19.99 · Amazon |
| 5303977088 | Instruction Sheet | This model only | $27.57 · Amazon |
| 5995509659 | Repair Parts List | 7 models | $27.97 · Amazon |
| 92506872 | Lawn Tractor Ignition Switch and Key | 30 models | $305.83 · Amazon |
| BM160 | Unknown Brand Name #398 Prntr Ribbon | 41 models | $6.00 · Amazon |
| DD6200084A | Dishwasher Water Inlet Valve | 47 models | $72.37 · Amazon |
| 492932S | Briggs & Statton Craftsman Lawn & Garden Equipment Engine Oil Filter (Black) | 50 models | $17.84 · Amazon |
Prices shown are an informational reference range only, not an offer or an Amazon price — RepairKitHub does not sell parts directly. Each part links to an Amazon search so you can compare current listings yourself.
Common failure areas on this model
The confirmed parts above group into a handful of failure areas. Here is what each points to and how to check it before you order anything.
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.
Parts in this group on 6421: CNT00963 (Control), 1100644 (F3 /guide), EBR42119301 (Home Electronics PCB Assembly), 0950378201 (Home Electronics Transformer), 5303977088 (Instruction Sheet), 5995509659 (Repair Parts List), 92506872 (Lawn Tractor Ignition Switch and Key), BM160 (Unknown Brand Name #398 Prntr Ribbon), 492932S (Briggs & Statton Craftsman Lawn & Garden Equipment Engine Oil Filter (Black)).
Water inlet and drainage
Symptom: The unit isn't getting water when it should, or isn't draining or pumping it out when it should.
Check: Check the valve or pump for a clog or jammed object, and confirm the hose isn't kinked, restricted, or routed higher than the unit allows.
Parts in this group on 6421: DD6200084A (Dishwasher Water Inlet Valve).
Before you buy
Match 6421 exactly against the model and serial plate on the appliance itself before ordering anything — a single mismatched character can point to a different production run with different parts. Then check the part number printed or stamped on the part you are replacing against the part numbers in the table above; the printed number is the most reliable way to confirm fitment when a model has gone through multiple production runs. RepairKitHub does not sell parts directly — every part link above routes to an Amazon search for that part number so you can compare current listings and sellers yourself.
How to confirm this is your model
Check inside a door opening, on a back or side panel, or behind a removable panel or drawer for a label printed with the model and serial number. Match every character exactly, including letters and dashes at the end — appliance model numbers often have similar prefixes but different suffixes for different production runs.
Still not sure?
Use the model lookup tool to search by model or part number, or start from the symptom your appliance is showing.