Amana
Furnace

Model # OC125-B4 Official Amana oil-fired counterflow furnace

Here are the diagrams and repair parts for Official Amana OC125-B4 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  |

Heat Exchanger Assembly 900-4001
#23A

Replacement parts diagram

Heat exchanger assembly

Part #900-4001

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

Motor Pulley 20-1521
#49C

Replacement parts diagram

Motor pulley

Part #20-1521

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

Access Door - Stop 251-2746
#33

Replacement parts diagram

Access door - stop

Part #251-2746

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

Blower Assembly (complete W/ Motor) 10-8 980-0178

#NI

All parts diagram

Blower assembly (complete w/ motor) 10-8

Part #980-0178

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

Blower Assembly (complete W/ Motor) 10-8 980-0177

#NI

All parts diagram

Blower assembly (complete w/ motor) 10-8

Part #980-0177

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

Panel - Upper Limit Control 304-5260
#7A

Replacement parts diagram

Panel - upper limit control

Part #304-5260

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

Bracket #12848a 102-52
#26J

Replacement parts diagram

Bracket #12848a

Part #102-52

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

Panel - Right Side Assembly 305-3100
#2B

Replacement parts diagram

Panel - right side assembly

Part #305-3100

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

Heat-cool Relay 22-9638

#NI

All parts diagram

Heat-cool relay

Part #22-9638

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

Panel - Lower Vestibule 305-5050
#5B

Replacement parts diagram

Panel - lower vestibule

Part #305-5050

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

Repair guides for front-engine lawn tractors

How to replace a ground drive belt on a riding lawn mower

How to replace a ground drive belt on a riding lawn mower

Replace the ground drive belt if it's broken or too worn to spin the transaxle pulley.…

Repair difficulty
Time required
 45 minutes or less
How to replace a blade clutch cable on a riding lawn mower

How to replace a blade clutch cable on a riding lawn mower

If the blades don't spin on your riding mower when you shift the lever, the blade clutch cable could be broken. Here’s h…

Repair difficulty
Time required
 30 minutes or less
How to replace a riding lawn mower blade drive belt

How to replace a riding lawn mower blade drive belt

Replace the blade drive belt if it's broken or won't spin the cutting blades because of wear.…

Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your furnaces

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.…

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.…

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.…