Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
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 # OU-100-B3 Official Amana oil-fired upflow furnace - ou series a

Here are the diagrams and repair parts for Official Amana OU-100-B3 oil-fired upflow furnace - ou series a, 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 184 parts  |
Motor Pulley 20-1521
#42B

Renewal parts diagram

Motor pulley

Part #20-1521

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

Fan & Limit Control - 200 Degrees Stop M-h L4064b1600 21-0510
#49A

Renewal parts diagram

Fan & limit control - 200 degrees stop m-h l4064b1600

Part #21-0510

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

Vestibule Access Panel Door Assembly 459-2750
#8C

Renewal parts diagram

Vestibule access panel door assembly

Part #459-2750

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

Top Front Panel Assembly 458-1110
#7B

Renewal parts diagram

Top front panel assembly

Part #458-1110

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

Blower Cutoff 980-1132
#33A

Renewal parts diagram

Blower cutoff

Part #980-1132

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

Cell Bracket #12848a 102-53C
#22Q

Renewal parts diagram

Cell bracket #12848a

Part #102-53C

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

Motor 1/4-316p260 - : 20-9206
Motor 1/4-316p260 - :

Part #20-9206

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

Furnace Blower Shaft 20-5021

#NI

All parts diagram

Furnace blower shaft

Part #20-5021

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

Oil Burner - Wayne 2/s - Plus Cell; Note 1 - For Complet 25-2301
#22S

Renewal parts diagram

Oil burner - wayne 2/s - plus cell; note 1 - for complet

Part #25-2301

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

Vestibule Access Panel Door Assembly 458-2750
#8B

Renewal parts diagram

Vestibule access panel door assembly

Part #458-2750

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.…

Read more
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…

Read more
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.…

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