Parts for 21R — Horizon
We found 43 parts confirmed to fit the Horizon 21R.
Compatibility table
| Part # | Part | Also fits | Reference price |
|---|---|---|---|
| 5306015120 | Connector | This model only | $7.76 · Amazon |
| UP125V331KA | Home Electronics Capacitor | This model only | $3.49 · Amazon |
| 23316745 | Home Electronics Diode | This model only | $7.21 · Amazon |
| MC0504102A | POWER CABLE 1.5mm 2M (1 PCS) | This model only | — · Amazon |
| A08115 | SAFETY B A | This model only | $39.78 · Amazon |
| 19610816303 | Vane Guide | This model only | $102.68 · Amazon |
| MC0714109A2 | ADAPTER (2M 120V/60HZ 7.5V/1A)(1 PCS) | 2 models | — · Amazon |
| SZRB100PAD | PAD KIT (RB100)(1 SET) | 2 models | — · Amazon |
| SZRB100PAX | PEDAL AXLE SET (RB100)(1 SET) | 2 models | — · Amazon |
| MB0204004AC | RB61 COVER (ABS)(1 PCS) | 2 models | — · Amazon |
| SM5000001A | WIRELESS HAND PULSE (RB100)(1 SET) | 2 models | — · Amazon |
| SW0227001B | ECB PEDAL ARM (1 SET) | 3 models | — · Amazon |
| SP0229001AC | RIGHT CRANK (COLOR:S-CLASS)(1 PCS) | 3 models | — · Amazon |
| ME0206008 | TIGHT NUT (AN04(M2.0 X 1.0P)(SUBSTITUTION: MJ3308001B)(1 PCS) | 3 models | — · Amazon |
| 38903100 | Nut | 4 models | $2.16 · Amazon |
| MB0601023A | BOTTLE HOLDER (1 PCS) BOTTLE CAGE | 5 models | — · Amazon |
| MJ1256006 | Clip | 7 models | $2.16 · Amazon |
| 00523900 | Elliptical Washer | 7 models | $2.16 · Amazon |
| ME0401007 | Key | 7 models | $2.16 · Amazon |
| 00839300 | Support | 7 models | $2.16 · Amazon |
| MD0121001C | DISCONTINUED-FIVE GROOVE PULLEY (PART OF PEDAL AXLE SET) | 8 models | — · Amazon |
| MB0609076B | End Cap | 8 models | $4.11 · Amazon |
| MB0305002CB | Rear Pad | 8 models | $2.27 · Amazon |
| 00543900 | Spring | 8 models | $3.05 · Amazon |
| MZE1103002 | Spring | 8 models | $2.78 · Amazon |
| 00409000 | Bearing | 9 models | $16.46 · Amazon |
| MZE0113003 | Bolt | 9 models | $2.99 · Amazon |
| 00948600 | Bushing | 9 models | $2.16 · Amazon |
| ME0701001 | C CLIP | 9 models | — · Amazon |
| 009491E | Cam | 9 models | $6.11 · Amazon |
| 001160A | Coverplate | 9 models | $2.53 · Amazon |
| 000906B | End Cap | 9 models | $2.16 · Amazon |
| 003443C | Horizon Elliptical Pulse Sensor | 9 models | $11.88 · Amazon |
| MZE0502107 | Washer | 9 models | $2.16 · Amazon |
| 00111400 | Wheel Axle Sleeve | 9 models | $3.79 · Amazon |
| W11225081 | COOKTOP | 28 models | $307.73 · Amazon |
| W11030502 | Washer Electronic Control Board | 28 models | $287.55 · Amazon |
| 248155 | Treadmill Motor Control Board | 35 models | $119.75 · Amazon |
| 318370200 | Cooktop Knob Bezel 318370200 | 36 models | $128.39 · Amazon |
| DD9401013A | Dishwasher Silverware Basket | 47 models | $127.16 · Amazon |
| W10894095 | Electric Control Board | 52 models | $250.70 · Amazon |
| WP8566184 | Timer - 60Hz | 176 models | $177.85 · Amazon |
| 241511101 | Refrigerator Electronic Control Board | 309 models | $415.94 · 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.
Storage, trim and cosmetic hardware
Symptom: A cracked shelf, broken door bin, worn hinge, or missing trim piece -- cosmetic and storage wear rather than a functional breakdown.
Check: Match the physical dimensions and mounting tabs of the old part before ordering; these pieces are often model-specific even between visually similar models.
Parts in this group on 2.1R: 5306015120 (Connector), SZRB100PAX (PEDAL AXLE SET (RB100)(1 SET)), MB0204004AC (RB61 COVER (ABS)(1 PCS)), MJ1256006 (Clip), 00839300 (Support), MB0609076B (End Cap), 00543900 (Spring), MZE1103002 (Spring), ME0701001 (C CLIP), 009491E (Cam), 001160A (Coverplate), 000906B (End Cap), 00111400 (Wheel Axle Sleeve), 318370200 (Cooktop Knob Bezel 318370200).
Controls, timers and wiring
Symptom: A cycle that doesn't advance, an unresponsive display, or the unit not starting at all.
Check: Look for burn marks or a burnt smell near the board or terminals, and check whether buttons and knobs respond -- a unit that powers on but won't cycle often traces back to this group.
Parts in this group on 2.1R: UP125V331KA (Home Electronics Capacitor), W11030502 (Washer Electronic Control Board), 248155 (Treadmill Motor Control Board), W10894095 (Electric Control Board), WP8566184 (Timer - 60Hz), 241511101 (Refrigerator Electronic Control Board).
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 2.1R: 23316745 (Home Electronics Diode), MC0504102A (POWER CABLE 1.5mm 2M (1 PCS)), A08115 (SAFETY B A), 19610816303 (Vane Guide), MC0714109A2 (ADAPTER (2M 120V/60HZ 7.5V/1A)(1 PCS)), SZRB100PAD (PAD KIT (RB100)(1 SET)), SM5000001A (WIRELESS HAND PULSE (RB100)(1 SET)), SW0227001B (ECB PEDAL ARM (1 SET)), SP0229001AC (RIGHT CRANK (COLOR:S-CLASS)(1 PCS)), ME0206008 (TIGHT NUT (AN04(M2.0 X 1.0P)(SUBSTITUTION: MJ3308001B)(1 PCS)), 38903100 (Nut), MB0601023A (BOTTLE HOLDER (1 PCS) BOTTLE CAGE), 00523900 (Elliptical Washer), ME0401007 (Key), MB0305002CB (Rear Pad), 00409000 (Bearing), MZE0113003 (Bolt), 00948600 (Bushing), 003443C (Horizon Elliptical Pulse Sensor), MZE0502107 (Washer), W11225081 (COOKTOP), DD9401013A (Dishwasher Silverware Basket).
Drive system (belts, pulleys, motors)
Symptom: A drum or tub that won't turn, a burning-rubber smell, or a loud thump or squeal during a cycle.
Check: With power off, turn the drum or tub by hand -- resistance or grinding points to the motor or a bearing, and a cracked, glazed, or snapped belt is visible once the cabinet is open.
Parts in this group on 2.1R: MD0121001C (DISCONTINUED-FIVE GROOVE PULLEY (PART OF PEDAL AXLE SET)).
Before you buy
Match 21R 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.