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
Carrier
Furnace

Model # 58MSA12012120 Official Carrier furnace

Here are the diagrams and repair parts for Official Carrier 58MSA12012120 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.

Owner’s manual

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 78 parts  |
Furnace Heat Exchanger 320723-751
#31

Heater exchanger assy diagram

Furnace heat exchanger

Part #320723-751

$223.55 | 
$10.00 OFF Phone Price : $233.55
In Stock
Transformer HT01BC116
#16

Cabinet parts 2 diagram

Transformer

Part #HT01BC116

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

Standoff 319892-201
#71

Induced draft assy diagram

Standoff

Part #319892-201

$32.07
In Stock
End Cap 319848-301
#60

Cabinet parts 1 diagram

End cap

Part #319848-301

$47.09
In Stock
Inlet Box 319847-401
#59

Cabinet parts 1 diagram

Inlet box

Part #319847-401

$32.67
In Stock
Furnace Burner Roll-out Limit Switch (replaces Hh18ha252) HH18HA452
#58

Cabinet parts 2 diagram

Furnace burner roll-out limit switch (replaces hh18ha252)

Part #HH18HA452

$23.74
In Stock
Shield 320711-302
#39

Heater exchanger assy diagram

Shield

Part #320711-302

$445.60
In Stock
Kit 320720-757
#32

Heater exchanger assy diagram

Kit

Part #320720-757

$360.53
In Stock
Door Latch AS22EP287
#9

Cabinet parts 2 diagram

Door latch

Part #AS22EP287

This item is not returnable
$6.11
In Stock
Furnace Door Switch HR54ZA006
#14

Cabinet parts 2 diagram

Furnace door switch

Part #HR54ZA006

This item is not returnable
$20.66
In Stock

Repair guides for front-engine lawn tractors

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 the brake interlock switch on a riding lawn mower

How to replace the brake interlock switch on a riding lawn mower

If the engine won’t start even though the brake is on, the brake interlock switch could be at fault. Here’s how to repla…

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