Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Tips to find your model number
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Amana
Furnace

Model # OC100-B3 Official Amana oil-fired counterflow furnace

Here are the diagrams and repair parts for Official Amana OC100-B3 oil-fired counterflow furnace, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 153 parts  |
Door - Access - Center 306-5460
#9C

Replacement parts diagram

Door - access - center

Part #306-5460

The manufacturer no longer makes this part, and there's no substitute part

Motor Pulley 20-1520
#49B

Replacement parts diagram

Motor pulley

Part #20-1520

The manufacturer no longer makes this part, and there's no substitute part

Furnace Blower Shaft 20-5021
#42

Replacement parts diagram

Furnace blower shaft

Part #20-5021

The manufacturer no longer makes this part, and there's no substitute part

Oil Burner Relay (m-h R8184b1188) 21-0833
#31

Replacement parts diagram

Oil burner relay (m-h r8184b1188)

Part #21-0833

The manufacturer no longer makes this part, and there's no substitute part

Door - Access - Center 304-5460
#9A

Replacement parts diagram

Door - access - center

Part #304-5460

The manufacturer no longer makes this part, and there's no substitute part

Control - Primary (m-h) Ra-816a1173 Early Model 21-0486
#27

Replacement parts diagram

Control - primary (m-h) ra-816a1173 early model

Part #21-0486

The manufacturer no longer makes this part, and there's no substitute part

Bracket #12848a 102-54
#26K

Replacement parts diagram

Bracket #12848a

Part #102-54

The manufacturer no longer makes this part, and there's no substitute part

Blower Housing Assembly W/brkts. 980-1249
#39A

Replacement parts diagram

Blower housing assembly w/brkts.

Part #980-1249

The manufacturer no longer makes this part, and there's no substitute part

Blower Pulley 7 X 3/4 20-1560
#50A

Replacement parts diagram

Blower pulley 7 x 3/4

Part #20-1560

The manufacturer no longer makes this part, and there's no substitute part

Bracket #12848a 102-51
#26D

Replacement parts diagram

Bracket #12848a

Part #102-51

The manufacturer no longer makes this part, and there's no substitute part

Repair guides for side-by-side refrigerators

How to replace a foamed-in-place door gasket in a side-by-side refrigerator

How to replace a foamed-in-place door gasket in a side-by-side refrigerator

The door gasket seals the gap around the door to keep the cold air in and the warm air out. Replace a worn or damaged do…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a defrost sensor in a side-by-side refrigerator

How to replace a defrost sensor in a side-by-side refrigerator

If frost is building up in the freezer of your side-by-side refrigerator, the defrost sensor could be at fault. You can …

Read more
Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your furnaces

View all
How to get your furnace ready for winter

How to get your furnace ready for winter

Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…

Read more
Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

Read more
Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Read more

Parts & More