Parts for 503 — Porter Cable
We found 59 parts confirmed to fit the Porter Cable 503.
Compatibility table
| Part # | Part | Also fits | Reference price |
|---|---|---|---|
| R503409 | Bag Adapter | This model only | $8.99 · Amazon |
| R157260 | Belt | This model only | $2.16 · Amazon |
| 848624 | FAN BEARING SEAL WASHER | This model only | $6.56 · Amazon |
| R503004 | Fan | This model only | $2.99 · Amazon |
| R503700 | Motor | This model only | $53.99 · Amazon |
| R501744 | Nozzle Plug | This model only | $2.99 · Amazon |
| R503019 | On-sert | This model only | $2.16 · Amazon |
| R050347 | Paper Bag | This model only | $4.34 · Amazon |
| R503270 | Plate | This model only | $3.99 · Amazon |
| 803685 | Porter Cable REAR ENDSHIELD SCREW | This model only | $2.16 · Amazon |
| R503319 | Screw | This model only | $2.16 · Amazon |
| R503302 | Switch | This model only | $2.49 · Amazon |
| 503720 | Bottom Rail | 2 models | $4.25 · Amazon |
| 503649 | Brace Rail | 2 models | $1.90 · Amazon |
| 503013 | Cutter Hooks | 2 models | $1.25 · Amazon |
| 801196 | Junction Box Cover Screw | 2 models | — · Amazon |
| 503646 | Lock Tab | 2 models | $0.75 · Amazon |
| 802969 | Nut | 2 models | $3.66 · Amazon |
| 859090 | OIL INSTRUCTION PLATE | 2 models | $5.36 · Amazon |
| 839053 | PINION PLATE | 2 models | $12.66 · Amazon |
| 503655 | Plastic Foot | 2 models | $2.00 · Amazon |
| 803380 | Porter Cable Spacer | 2 models | $22.98 · Amazon |
| 802422 | REAR ENDSHIELD TOP SCREW | 2 models | $2.16 · Amazon |
| 503652 | Rivet | 2 models | $0.25 · Amazon |
| 503653 | Rivet | 2 models | $0.25 · Amazon |
| 503639 | Rubber Ext | 2 models | $3.00 · Amazon |
| 503640 | Rubber Ext | 2 models | $3.00 · Amazon |
| 503656 | Spring Clip | 2 models | $0.45 · Amazon |
| 503651 | Thumb Screw | 2 models | $3.25 · Amazon |
| 503721 | Upright Brkt | 2 models | $2.50 · Amazon |
| 841133 | Seal (early Models) | 3 models | $5.27 · Amazon |
| 503648 | 5.6k 1/4w J | 4 models | $2.16 · Amazon |
| 859511 | COLLAR SLEEVE | 4 models | $9.34 · Amazon |
| 802350 | Baffle Screw | 5 models | $2.16 · Amazon |
| 690671 | Adj.spring | 6 models | $2.50 · Amazon |
| 876108 | Adjusting Screw | 6 models | $7.24 · Amazon |
| 802433 | Hinge Pin | 6 models | $2.20 · Amazon |
| 802695 | CORD CLAMP SCREW | 7 models | $2.16 · Amazon |
| 1503004000 | Vacuum Fan | 9 models | $3.49 · Amazon |
| 503017 | Flat Washer | 12 models | $36.61 · Amazon |
| 3010347001 | Vacuum Bag, 3-pack | 12 models | $4.34 · Amazon |
| 1232240001 | Vacuum Beater Bar Belt | 14 models | $2.49 · Amazon |
| 696167 | Dust Bag | 22 models | — · Amazon |
| 801852 | Craftsman Felt Seal | 25 models | — · Amazon |
| 873497 | Power Tool Motor Brush Holder | 29 models | $13.05 · Amazon |
| B193 | Belt B/5L 21/32 X 196-in Oc | 53 models | $48.76 · Amazon |
| 089037007707 | Table Saw Miter Gauge Assembly | 69 models | $12.89 · Amazon |
| 849314 | Terminal | 74 models | $2.16 · Amazon |
| 429636 | Craftsman Lawn Tractor Blade Drive Belt, 1/2 x 101-3/8-in | 84 models | $62.03 · Amazon |
| 7321026 | Lawn Mower Height Adjuster Lever | 119 models | $12.01 · Amazon |
| 7480376C | Lawn Mower Blade Adapter | 143 models | $29.13 · Amazon |
| 7100514 | Yard Machines Lawn Tractor Bolt | 157 models | $6.30 · Amazon |
| 74904037 | Lawn Mower Lower Handle | 185 models | $75.45 · Amazon |
| 7360451 | Washer | 226 models | $7.86 · Amazon |
| 7470710 | Hinge Pin | 355 models | $2.54 · Amazon |
| 7101174 | Yard Machines Lawn & Garden Equipment Bolt | 378 models | $12.96 · Amazon |
| 7200284 | Knob Wing Nut | 391 models | $11.23 · Amazon |
| 7101205 | Yard Machines Lawn & Garden Equipment Guide Bolt | 550 models | $5.92 · Amazon |
| 7100599 | MTD Lawn Tractor Screw | 1,116 models | $5.81 · 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 503: R503409 (Bag Adapter), 848624 (FAN BEARING SEAL WASHER), R503004 (Fan), R503700 (Motor), R501744 (Nozzle Plug), R503019 (On-sert), R050347 (Paper Bag), R503270 (Plate), R503302 (Switch), 503720 (Bottom Rail), 503649 (Brace Rail), 503013 (Cutter Hooks), 503646 (Lock Tab), 802969 (Nut), 859090 (OIL INSTRUCTION PLATE), 839053 (PINION PLATE), 503655 (Plastic Foot), 503652 (Rivet), 503653 (Rivet), 503639 (Rubber Ext), 503640 (Rubber Ext), 503721 (Upright Brkt), 841133 (Seal (early Models)), 503648 (5.6k 1/4w J), 859511 (COLLAR SLEEVE), 1503004000 (Vacuum Fan), 503017 (Flat Washer), 3010347001 (Vacuum Bag, 3-pack), 696167 (Dust Bag), 801852 (Craftsman Felt Seal), 873497 (Power Tool Motor Brush Holder), 089037007707 (Table Saw Miter Gauge Assembly), 849314 (Terminal), 7321026 (Lawn Mower Height Adjuster Lever), 7480376C (Lawn Mower Blade Adapter), 7100514 (Yard Machines Lawn Tractor Bolt), 7360451 (Washer), 7101174 (Yard Machines Lawn & Garden Equipment Bolt), 7101205 (Yard Machines Lawn & Garden Equipment Guide Bolt).
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 503: R157260 (Belt), 1232240001 (Vacuum Beater Bar Belt), B193 (Belt B/5L 21/32 X 196-in Oc), 429636 (Craftsman Lawn Tractor Blade Drive Belt, 1/2 x 101-3/8-in).
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 503: 803685 (Porter Cable REAR ENDSHIELD SCREW), R503319 (Screw), 801196 (Junction Box Cover Screw), 803380 (Porter Cable Spacer), 802422 (REAR ENDSHIELD TOP SCREW), 503656 (Spring Clip), 503651 (Thumb Screw), 802350 (Baffle Screw), 690671 (Adj.spring), 876108 (Adjusting Screw), 802433 (Hinge Pin), 802695 (CORD CLAMP SCREW), 74904037 (Lawn Mower Lower Handle), 7470710 (Hinge Pin), 7200284 (Knob Wing Nut), 7100599 (MTD Lawn Tractor Screw).
Before you buy
Match 503 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.