Skip to content

Free Standard Parts Shipping Over $999* • TIPS Contract Vendor

📦 Order Status

📞 850-565-3492 🛠️ Apply for Trade Pricing

Boilers
- Lochinvar
- Weil-McLain
Pumps
Parts Finder
Components
Industrial Parts
- HVAC
  
  HVAC Parts
  Fans & Ventilation
  HVAC Controls
  Heating Equipment
  Air Conditioning & Refrigeration
  Filters & Air Treatment
  HVAC Pumps
- Plumbing
  
  Pipes, Valves & Fittings
  Plumbing Repair & Maintenance
  Filtration
  Water Heaters
- Safety
  
  Safety Equipment
- Fireye
  
  Fireye
Support
Resources
Calculators
Home

Boilers
- Lochinvar
- Weil-McLain
Pumps
Parts Finder
Components
Industrial Parts
Support
Resources
Calculators
Home

Search

Item added to your cart

View cart

Boilers ▾

Lochinvar Weil-McLain

Pumps ▾

Bell & Gossett Taco Comfort Solutions Grundfos Armstrong Pumps & Circulators

Parts Finder

Components ▾

Expansion Tanks Air & Dirt Separators Hydronic Trim & Valves Circuit Setters Piping & Fittings Regulators & Controls Flush Valves & Plumbing Bundles & Kits Tankless Water Heaters

Industrial Parts ▾

HVAC HVAC Parts Fans & Ventilation HVAC Controls Heating Equipment Air Conditioning & Refrigeration Filters & Air Treatment HVAC Pumps

Plumbing Pipes, Valves & Fittings Plumbing Repair & Maintenance Filtration Water Heaters

Safety Safety Equipment

Fireye Fireye

Support ▾

Track Your Order Order Assistance Contact Us

Resources

Calculators

Home

Contact Us

📞 850-565-3492 🛠️ Apply for Trade Pricing

Home › prostock

Collection: prostock

Sort by:

65 products

Filter and sort Filter

Filter and sort

Filter

65 products

Sort by:

Remove all

65 products

Prostock 43-101665-59 - Motor Dual Run Capacitor, 440 V AC

Prostock 43-101665-59 - Motor Dual Run Capacitor, 440 V AC

Vendor:
Prostock

Regular price $52.31 USD

Regular price Sale price $52.31 USD
Prostock 43-101666-69 - Motor Single Run Capacitor, 440 V AC

Prostock 43-101666-69 - Motor Single Run Capacitor, 440 V AC

Vendor:
Prostock

Regular price $39.01 USD

Regular price Sale price $39.01 USD
Prostock 43-25133-24 - Motor Dual Run Capacitor, 440 V AC

Prostock 43-25133-24 - Motor Dual Run Capacitor, 440 V AC

Vendor:
Prostock

Regular price $17.87 USD

Regular price Sale price $17.87 USD
Prostock 43-25133-36 - Motor Dual Run Capacitor, 440 V AC

Prostock 43-25133-36 - Motor Dual Run Capacitor, 440 V AC

Vendor:
Prostock

Regular price $20.92 USD

Regular price Sale price $20.92 USD
Prostock 43-25136-07 - Motor Dual Run Capacitor, 370 V AC

Prostock 43-25136-07 - Motor Dual Run Capacitor, 370 V AC

Vendor:
Prostock

Regular price $14.05 USD

Regular price Sale price $14.05 USD
Prostock 43-25136-25 - Motor Run Capacitor, 440 V AC

Prostock 43-25136-25 - Motor Run Capacitor, 440 V AC

Vendor:
Prostock

Regular price $9.36 USD

Regular price Sale price $9.36 USD
Prostock 43-25136-27 - Motor Single Run Capacitor, 440 V AC

Prostock 43-25136-27 - Motor Single Run Capacitor, 440 V AC

Vendor:
Prostock

Regular price $11.43 USD

Regular price Sale price $11.43 USD
Prostock 47-100436-08 - Switching Relay,Non-Integrated,240 V AC

Out of Stock - Call to Order

Prostock 47-100436-08 - Switching Relay,Non-Integrated,240 V AC

Vendor:
PROSTOCK

Regular price $58.85 USD

Regular price Sale price $58.85 USD

Out of Stock - Call to Order
Prostock 47-100436-09 - Control Board,Integrated,240 V AC

Prostock 47-100436-09 - Control Board,Integrated,240 V AC

Vendor:
PROSTOCK

Regular price $81.30 USD

Regular price Sale price $81.30 USD
Prostock 51-101728-05 - OEM Replacement Motor, 1/2, OEM Replacement Brand: Protech Replacement For: 51-101728-05

Prostock 51-101728-05 - OEM Replacement Motor, 1/2, OEM Replacement Brand: Protech Replacement For: 51-101728-05

Vendor:
Prostock

Regular price $555.89 USD

Regular price Sale price $555.89 USD
Prostock 51-102008-18 - OEM Replacement Motor, 1/8 hp, OEM Replacement Brand: Protech Replacement For: 51-104691-04

Prostock 51-102008-18 - OEM Replacement Motor, 1/8 hp, OEM Replacement Brand: Protech Replacement For: 51-104691-04

Vendor:
Prostock

Regular price $337.89 USD

Regular price Sale price $337.89 USD
Prostock 51-102008-20 - OEM Replacement Motor, 1/6, OEM Replacement Brand: Protech Replacement For: 51-102008-20

Prostock 51-102008-20 - OEM Replacement Motor, 1/6, OEM Replacement Brand: Protech Replacement For: 51-102008-20

Vendor:
Prostock

Regular price $357.51 USD

Regular price Sale price $357.51 USD
Prostock 51-102008-29 - OEM Replacement Motor, 1/5, OEM Replacement Brand: Protech Replacement For: 51-102008-29

Prostock 51-102008-29 - OEM Replacement Motor, 1/5, OEM Replacement Brand: Protech Replacement For: 51-102008-29

Vendor:
Prostock

Regular price $461.06 USD

Regular price Sale price $461.06 USD
Prostock 51-102177-01 - OEM Replacement Motor, 1/5, OEM Replacement Brand: Protech

Prostock 51-102177-01 - OEM Replacement Motor, 1/5, OEM Replacement Brand: Protech

Vendor:
Prostock

Regular price $360.78 USD

Regular price Sale price $360.78 USD
Prostock 51-102500-08 - OEM Replacement Motor, 1/4, OEM Replacement Brand: Protech

Prostock 51-102500-08 - OEM Replacement Motor, 1/4, OEM Replacement Brand: Protech

Vendor:
Prostock

Regular price $394.57 USD

Regular price Sale price $394.57 USD
Prostock 51-106541-17 - OEM Replacement Motor, 1/2, OEM Replacement Brand: Protech Replacement For: 51-106541-17

Prostock 51-106541-17 - OEM Replacement Motor, 1/2, OEM Replacement Brand: Protech Replacement For: 51-106541-17

Vendor:
Prostock

Regular price $808.77 USD

Regular price Sale price $808.77 USD

1
2
3
…
5

Need help finding a replacement part?

Fill out the part request form and someone will get back to you shortly.

PART REQUEST FORM

Quick links

Terms of Service
Refund & Cancellation Policy
Privacy Policy
Shipping & LTL Freight Policy
Order Assistance
Gulf Coast Service Area
Government Procurement

Payment methods

© 2026, National Boiler Supply

Choosing a selection results in a full page refresh.
Opens in a new window.