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
Horizon
Exercise Cycle

Model # R51 Official Horizon exercise bike

Here are the diagrams and repair parts for Official Horizon R51 exercise bike, 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 92 parts  |
Screw MZE0121004
#T20

Exercise bike diagram

Screw

Part #MZE0121004

Replaced by #004865-00

?
Manufacturer substitution
This part replaces MZE0121004. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Coverplate MB0624004A
Coverplate

Part #MB0624004A

Replaced by #001160-A

?
Manufacturer substitution
This part replaces MB0624004A. Substitute parts can look different from the original.
This item is not returnable
$2.53
In Stock
Poly V-belt MD0608005A
#R03

Exercise bike diagram

Poly v-belt

Part #MD0608005A

Replaced by #004203-A

?
Manufacturer substitution
This part replaces MD0608005A. Substitute parts can look different from the original.
$28.99
In Stock
End Cap MB0609076B
#F09

Exercise bike diagram

End cap

Part #MB0609076B

Replaced by #000933-C

?
Manufacturer substitution
This part replaces MB0609076B. Substitute parts can look different from the original.
This item is not returnable
$5.99
In Stock
Cam ML0110001
#D17

Exercise bike diagram

Cam

Part #ML0110001

Replaced by #009491-E

?
Manufacturer substitution
This part replaces ML0110001. Substitute parts can look different from the original.
This item is not returnable
$6.11
In Stock
Bushing MZE0301014
#F07

Exercise bike diagram

Bushing

Part #MZE0301014

Replaced by #004975-00

?
Manufacturer substitution
This part replaces MZE0301014. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Screw ME0102026
#N02

Exercise bike diagram

Screw

Part #ME0102026

Replaced by #004369-00

?
Manufacturer substitution
This part replaces ME0102026. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Bushing ML0106002
#D16

Exercise bike diagram

Bushing

Part #ML0106002

Replaced by #009486-00

?
Manufacturer substitution
This part replaces ML0106002. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Pad MB0510001B
#F11

Exercise bike diagram

Pad

Part #MB0510001B

Replaced by #000782-B

?
Manufacturer substitution
This part replaces MB0510001B. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Support MJ1802001
Support

Part #MJ1802001

Replaced by #008393-00

?
Manufacturer substitution
This part replaces MJ1802001. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock

Effective articles & videos to help repair your fitness & exercise

View all
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