ICP
Furnace

Model # GCK125N20C1 Official ICP gas furnace

Here are the diagrams and repair parts for Official ICP GCK125N20C1 gas 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 99 parts  |

Furnace Pilot Igniter And Sensor (replaces B14010-11s, Q3400a1040) 1009524
#14

Unit parts diagram

Furnace pilot igniter and sensor (replaces b14010-11s, q3400a1040)

Part #1009524

$166.19
6% OFF Phone Price : $176.19
In Stock
Trans 40 Va 1008782
#23

Unit parts diagram

Trans 40 va

Part #1008782

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

Gskt Lmt Swt 1008778
#P

Unit parts diagram

Gskt lmt swt

Part #1008778

This item is not returnable
In Stock
Viewport Cvr 2480678
#W

Unit parts diagram

Viewport cvr

Part #2480678

In Stock
Baffle 707010031
#H

Unit parts diagram

Baffle

Part #707010031

In Stock
Coupling 1002522

#NI

All parts diagram

Coupling

Part #1002522

In Stock
Tubing 64930
#11

Unit parts diagram

Tubing

Part #64930

In Stock
Gskt Viewpor 1093666
#X

Unit parts diagram

Gskt viewpor

Part #1093666

This item is not returnable
In Stock
Panel Cutoff 721020008
#OO

Unit parts diagram

Panel cutoff

Part #721020008

In Stock
Conv Kit 1009510

#NI

All parts diagram

Conv kit

Part #1009510

In Stock

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.…