Exploded parts diagram and parts list for the DEWALT DW421 Random Orbital Sander. Find the item number on the drawing, then match it in the parts list. Genuine OEM replacement parts with free US shipping.
Pick your type number first. It is on the nameplate label (for example "Type 2"). Parts can differ between types.
Type:
| # | Part # | Description | Shop |
|---|---|---|---|
| 1 | 578863-03 | Armature 115V | Not stocked, ask us |
| 2 | 807254-08 | Field 115V | Not stocked, ask us |
| 3 | 445861-25 | Brush 115V | Single $11.98 2-Pack $18.98 |
| 4 | 445860-00 | Brush Spring | Single $7.99 2-Pack $11.98 4-Pack $16.98 10-Pack $22.98 |
| 5 | 449899-05 | Ring | Single $8.95 2-Pack $24.98 |
| 6 | 144960-00 | Switch | Single $5.99 2-Pack $9.98 5-Pack $18.99 |
| 7 | 330072-97 | Cordset | Single $17.98 2-Pack $30.98 |
| 8 | 605040-15 | Bearing Ball | Single $8.99 2-Pack $11.98 |
| 9 | 605040-05 | Bearing | Single $8.49 2-Pack $30.98 |
| 10 | 616020-00 | Fan | Not stocked, ask us |
| 11 | 380382-00 | Cover Housing | Not stocked, ask us |
| 13 | N918736 | Cord Protector | Single $8.98 |
| 14 | 380414-00 | Cord Clamp | Not stocked, ask us |
| 15 | 285252-00 | Cap | Not stocked, ask us |
| 16 | 144989-00 | Terminal & Lead | Not stocked, ask us |
| 17 | 445964-00 | Terminal | 2-Pack $6.49 4-Pack $7.99 |
| 18 | 825209-00 | Connector | Not stocked, ask us |
| 19 | 610078-00 | Shroud Sa | Not stocked, ask us |
| 21 | 286181-00 | Repair Kit | Not stocked, ask us |
| 22 | 603637-00 | Retainer | Not stocked, ask us |
| 23 | 605040-27 | Bearing | Single $11.99 2-Pack $13.95 |
| 24 | 151281-08 | Pad | 2-Pack $54.95 5-Pack $228.98 |
| 25 | 151549-00 | Baffle | Not stocked, ask us |
| 26 | 151553-00 | Brake | Single $15.98 2-Pack $21.98 |
| 27 | 144983-07 | Cover | Single $9.98 2-Pack $10.99 |
| 28 | 386856-00 | Dust Bag Sa | Single $14.49 2-Pack $24.99 |
| 28 | 624307-00 | Dustbag | Single $14.49 2-Pack $24.99 |
| 30 | 56194-00 | O Ring | Not stocked, ask us |
| 32 | 700871-00 | O Ring | Not stocked, ask us |
| 33 | 330019-11 | Screw | Single $4.99 2-Pack $5.99 |
| 34 | 098012-11 | Screw | Single $5.98 2-Pack $6.49 |
| 35 | 146929-01 | Screw | Single $8.98 2-Pack $8.98 |
| 36 | 330019-02 | Screw | Single $5.49 2-Pack $19.98 4-Pack $21.98 10-Pack $14.99 |
| 37 | 330019-08 | Screw | Not stocked, ask us |
| 38 | 330019-03 | Screw | Single $5.49 2-Pack $7.49 |
| 40 | 151652-00 | Washer | Single $5.49 2-Pack $6.49 |
| 41 | 398399-00 | Brand Label | Not stocked, ask us |
| 42 | 605984-00 | Nameplate | Not stocked, ask us |
| 43 | 151669-00 | Circlip | Not stocked, ask us |
| 44 | 144956-00 | Nut | Not stocked, ask us |
| 139 | 330019-13 | Screw | Single $5.49 |
| 856 | DW4380 | Dust Extract. Adp | Not stocked, ask us |
| 861 | 625383-00 | Kitbox | Not stocked, ask us |
| # | Part # | Description | Shop |
|---|---|---|---|
| 1 | 616618-00SV | Armature & Brgs | Not stocked, ask us |
| 2 | 615795-00SV | Field | Not stocked, ask us |
| 3 | 445861-25 | Brush 115V | Single $11.98 2-Pack $18.98 |
| 4 | 445860-00 | Brush Spring | Single $7.99 2-Pack $11.98 4-Pack $16.98 10-Pack $22.98 |
| 5 | 449899-05 | Ring | Single $8.95 2-Pack $24.98 |
| 6 | 144960-00 | Switch | Single $5.99 2-Pack $9.98 5-Pack $18.99 |
| 7 | 330072-97 | Cordset | Single $17.98 2-Pack $30.98 |
| 8 | 605040-15 | Bearing Ball | Single $8.99 2-Pack $11.98 |
| 9 | 605040-05 | Bearing | Single $8.49 2-Pack $30.98 |
| 10 | 616020-00 | Fan | Not stocked, ask us |
| 11 | 380382-00 | Cover Housing | Not stocked, ask us |
| 13 | N918736 | Cord Protector | Single $8.98 |
| 14 | 380414-00 | Cord Clamp | Not stocked, ask us |
| 15 | 285252-00 | Cap | Not stocked, ask us |
| 16 | 144989-00 | Terminal & Lead | Not stocked, ask us |
| 17 | 445964-00 | Terminal | 2-Pack $6.49 4-Pack $7.99 |
| 18 | 825209-00 | Connector | Not stocked, ask us |
| 19 | 610078-00 | Shroud Sa | Not stocked, ask us |
| 21 | 286181-00 | Repair Kit | Not stocked, ask us |
| 22 | 603637-00 | Retainer | Not stocked, ask us |
| 23 | N570313 | Bearing | Single $9.95 |
| 24 | 151281-08 | Pad | 2-Pack $54.95 5-Pack $228.98 |
| 25 | 151549-00 | Baffle | Not stocked, ask us |
| 26 | 151553-00 | Brake | Single $15.98 2-Pack $21.98 |
| 27 | 144983-07 | Cover | Single $9.98 2-Pack $10.99 |
| 30 | 56194-00 | O Ring | Not stocked, ask us |
| 32 | 700871-00 | O Ring | Not stocked, ask us |
| 34 | 098012-11 | Screw | Single $5.98 2-Pack $6.49 |
| 35 | 146929-01 | Screw | Single $8.98 2-Pack $8.98 |
| 36 | 330019-02 | Screw | Single $5.49 2-Pack $19.98 4-Pack $21.98 10-Pack $14.99 |
| 37 | 330019-08 | Screw | Not stocked, ask us |
| 38 | 330019-03 | Screw | Single $5.49 2-Pack $7.49 |
| 39 | 330019-13 | Screw | Single $5.49 |
| 40 | 151652-00 | Washer | Single $5.49 2-Pack $6.49 |
| 41 | 398399-00 | Brand Label | Not stocked, ask us |
| 42 | 652281-00 | Nameplate | Not stocked, ask us |
| 43 | 151669-00 | Circlip | Not stocked, ask us |
| 44 | 144956-00 | Nut | Not stocked, ask us |
| 50 | 624307-00 | Dustbag | Single $14.49 2-Pack $24.99 |
| 51 | 604763-00 | Label,Warning | Not stocked, ask us |
| 52 | 653711-00 | Warning Label | Not stocked, ask us |
| 861 | 625383-00 | Kitbox | Not stocked, ask us |
More parts that fit the DEWALT DW421
- DeWalt D26450/D26451/D26453 Replacement Sander Dust Bag # 608354-00SV
- DeWalt D26450/D26451/D26453 Replacement Sander Dust Bag 2-Pack # 608354-00SV-2PK
- DeWalt D26450/D26451/D26453 Replacement Sander Dust Bag 3-Pack, 608354-00SV-3PK
- DeWalt DW421/DW422/D26450 Replacement (2 Pack) Sander Dust Bag - 380412-00-2PK
- DeWalt DW421/DW422/D26450 Replacement Sander Dust Bag # 380412-00
- DeWalt DW421/DW422/DW423 Replacement 5" PSA Sander Pad # 151281-09
- DeWalt Genuine OEM Replacement Bearing Combo - CMB149
- DeWalt Replacement (2 Pack) Bearing (6202DW) - 330003-75-2PK
- DeWalt Replacement Bearing (6202DW) # 330003-75
- DeWalt 2 Pack of Genuine OEM Ball Bearings + Ball Bearings # COMBO00240
- DeWalt 2 Pack of Genuine OEM Replacement Dust Bag Assemblies # 386856-00-2PK
- DeWalt DW420/DW423 Sander Pad 5" PSA No Vacuum Holes (2 Pack) - 151662-00
- DeWalt DW420/DW423 Sander Replacement Pad 5" PSA No Vacuum Holes - 151662-00
- DeWalt Genuine OEM Replacement Bearing Combo # COMBO00149
Can't find your part? Contact us with your model and type number. Search all parts diagrams or shop all DEWALT parts.