/
/
Parts town. Get real parts faster

Shopping Cart

Skip to NavigationSkip to Content
Loading...
Loading...
CAD
Multi-SKU Order
LoginRegister
Parts town. Get real parts faster

Find Equipment Manuals

Loading...
Loading...

Master-Bilt R51R21B2CJ Parts & Manuals

Manufacturer:

Model #:

Master-Bilt

R51R21B2CJ

get special offers & news from parts town

800.239.5152
Loading...
Loading...
visa
visa
mastercard
mastercard
american-express
american-express
discover
discover
paypal
paypal
© 2026 Parts Town. All rights reserved.
Loading...
visa
visa
mastercard
mastercard
american-express
american-express
discover
discover
paypal
paypal

Stock Up on Real OEM HVAC Parts for the Fall Season! SHOP NOW

Call: 800.239.5152
Hvac Parts
TECHTOWN
Track My Order

Important Update: Click here for the latest information on tariffs and their impact on our industry.

Help Desk

  • Contact Us
  • Shipping
  • Taxes And Fees
  • Returns
  • FAQ

Inside Parts Town

  • About Us
  • Careers
  • Our Difference
  • Resource Center
  • Parts Town Blog
  • techtown
  • International

Technology and Innovations

  • Parts Town App
  • Serial Number Lookup
  • Smart Manuals
  • Website Features
  • Terms of Use
  • Privacy Policy
  • Privacy Request
Part Predictor Background
PartsTown Logo

Real data and artificial intelligence thinking together to find your part.

  1. Home
  2. /
  3. Master-Bilt
  4. /
  5. R51R21B2CJ
Parts Town Logo

1-Hour Pickup Available

Part Category

  • Baskets, Bowls & Containers(2)
  • Bearings & Bushings(2)
  • Brackets & Retainers(2)
  • Channels & Slides(2)
  • Circuit Breakers(3)
  • Compressors(3)
  • Condenser & Evaporator Coils(2)
  • Contactors(2)
  • Controls(4)
  • Decals, Labels & Overlays(1)
  • Elements, Heaters & Platens(1)
  • Fan & Blower Motors(2)
  • Fan Blades & Blower Wheels(1)
  • Filters, Screens & Driers(4)
  • Fuses, Blocks & Holders(1)
  • Gauge Glass(1)
  • Hinges(1)
  • Holders & Supports(1)
  • Hoses, Pipes & Tubing(5)
  • Nuts, Bolts & Screws(1)
  • Panels, Covers & Lids(9)
  • Relays(3)
  • Shields & Guards(1)
  • Temperature Controls(1)
  • Terminal Blocks(5)
  • Thermostats & High Limits(2)
  • Timers(1)
  • Valves, Solenoids & Fittings(7)
Cool,Calm and Collected- Real OEM HVAC Pars Are in Season! SHOP NOW

Part Category

  • Baskets, Bowls & Containers(2)
  • Bearings & Bushings(2)
  • Brackets & Retainers(2)
  • Channels & Slides(2)
  • Circuit Breakers(3)
  • Compressors(3)
  • Condenser & Evaporator Coils(2)
  • Contactors(2)
  • Controls(4)
  • Decals, Labels & Overlays(1)
  • Elements, Heaters & Platens(1)
  • Fan & Blower Motors(2)
  • Fan Blades & Blower Wheels(1)
  • Filters, Screens & Driers(4)
  • Fuses, Blocks & Holders(1)
  • Gauge Glass(1)
  • Hinges(1)
  • Holders & Supports(1)
  • Hoses, Pipes & Tubing(5)
  • Nuts, Bolts & Screws(1)
  • Panels, Covers & Lids(9)
  • Relays(3)
  • Shields & Guards(1)
  • Temperature Controls(1)
  • Terminal Blocks(5)
  • Thermostats & High Limits(2)
  • Timers(1)
  • Valves, Solenoids & Fittings(7)
Cool,Calm and Collected- Real OEM HVAC Pars Are in Season! SHOP NOW

Master-Bilt 19-13716 TERMINAL BLOCK, GRY6, TYPE G

Master-Bilt
  • Mfr Part # 19-13716
  • Parts Town # MB19-13716
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 21-01195 MINERALLAC HANGERS #3

Master-Bilt
  • Mfr Part # 21-01195
  • Parts Town # MB21-01195
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 21-01274 CONCEALED CONTROL COVER #CVR-2

Master-Bilt
  • Mfr Part # 21-01274
  • Parts Town # MB21-01274
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 21-01343 SCREW END CLAMP SQUARE D -9080

Master-Bilt
  • Mfr Part # 21-01343
  • Parts Town # MB21-01343
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 35-00282 HINGE, 2 1/2, HAGER #1838

Master-Bilt
  • Mfr Part # 35-00282
  • Parts Town # MB35-00282
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 44-01008 1/4 TURN FASTENER, #2600-6

Master-Bilt
  • Mfr Part # 44-01008
  • Parts Town # MB44-01008
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 44-01009 RECEPTACLE, #212-12

Master-Bilt
  • Mfr Part # 44-01009
  • Parts Town # MB44-01009
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 57-01618 LABEL, EDP PRINTABLE WIRE MAR

Master-Bilt
  • Mfr Part # 57-01618
  • Parts Town # MB57-01618
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 57-01792 BOTTOM CRATE ASSEMBLY, WG 3 C

Master-Bilt
  • Mfr Part # 57-01792
  • Parts Town # MB57-01792
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-13001 BASE, 47.437 X 82.500

Master-Bilt
  • Mfr Part # 570-13001
  • Parts Town # MB570-13001
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-20001 CORNER POST, LEFT REAR, 20.50

Master-Bilt
  • Mfr Part # 570-20001
  • Parts Town # MB570-20001
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-20002 CORNER POST, RIGHT REAR, 16.3

Master-Bilt
  • Mfr Part # 570-20002
  • Parts Town # MB570-20002
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-20003 CORNER POST, RIGHT FRONT, 18.

Master-Bilt
  • Mfr Part # 570-20003
  • Parts Town # MB570-20003
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-20005 CORNER POST, LEFT FRONT, 19.0

Master-Bilt
  • Mfr Part # 570-20005
  • Parts Town # MB570-20005
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-20021 VENTURI PANEL (22 FAN), 29.00

Master-Bilt
  • Mfr Part # 570-20021
  • Parts Town # MB570-20021
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-23004 CORNER POST, MIDDLE FRONT, 9.

Master-Bilt
  • Mfr Part # 570-23004
  • Parts Town # MB570-23004
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-30001 PANEL, END, 28.875 X 31.844 (

Master-Bilt
  • Mfr Part # 570-30001
  • Parts Town # MB570-30001
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-30003 PANEL, FRONT, 28.875 X 37.094

Master-Bilt
  • Mfr Part # 570-30003
  • Parts Town # MB570-30003
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-30004 LINE PANEL, 7.500 X 28.750 A-

Master-Bilt
  • Mfr Part # 570-30004
  • Parts Town # MB570-30004
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-40002 RAIN SHIELD, 2.250 X 38.000 C

Master-Bilt
  • Mfr Part # 570-40002
  • Parts Town # MB570-40002
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-40003 DOOR SPACER, 1.375 X 32.375

Master-Bilt
  • Mfr Part # 570-40003
  • Parts Town # MB570-40003
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-43001 TOP, 46.438 X 81.501

Master-Bilt
  • Mfr Part # 570-43001
  • Parts Town # MB570-43001
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-50001 CONTROL BOX WRAPPER, 44.288 X

Master-Bilt
  • Mfr Part # 570-50001
  • Parts Town # MB570-50001
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Master-Bilt 570-50005 CONTROL BOX COVER, 35.250 X 3

Master-Bilt
  • Mfr Part # 570-50005
  • Parts Town # MB570-50005
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

234