Murray X78A Belt Size Guide

The Murray X78A lawn tractor uses seven published belt sizes: 1/2" Wide x 88 1/4" O.D. for the cutter deck belt, 1/2" Wide x 86 1/2" O.D. for the cutter deck belt, 1/2" Wide x 86" O.D. for the engine to deck belt / primary cutter deck belt, 1/2" Wide x 97" O.D. for the transmission / motion drive belt, 1/2" Wide x 89" O.D. for the transmission / motion drive belt, 1/2" Wide x 43 7/8" O.D. for the transmission / motion drive belt, and 7/16" Wide x 45" O.D. for the cutter deck belt. Match each belt to its correct position and OEM reference before ordering.
Belt replacement guide

Murray X78A belt size & replacement chart

OEM references, belt positions and published dimensions for this lawn tractor.

Equipment: Lawn TractorBelt applications: 7OEM references: 21Sizes listed: 7
Distinct belts7
OEM references21
Belt functions2
Published sizes7
Replacement lookup

Murray X78A belt chart

Match the belt function first, then confirm the OEM number and size.

Belt application OEM / replacement number Published size Listing SKU
Mower deck
Cutter Deck Belt
37X88, 037X88, 37X88MA, 710213 1/2" Wide x 88 1/4" O.D. BEL37X88
Mower deck
Cutter Deck Belt
37X62, 037X62 1/2" Wide x 86 1/2" O.D. BEL37X62
Mower deck
Engine to Deck Belt / Primary Cutter Deck Belt
37X89, 037X89, 037X89MA, 710217, 7101748YP 1/2" Wide x 86" O.D. BEL37X89
Transmission / motion
Transmission / Motion Drive Belt
37X87, 037X87, 710341 1/2" Wide x 97" O.D. BEL37X87
Transmission / motion
Transmission / Motion Drive Belt
37X106, 037X106, 37X106MA 1/2" Wide x 89" O.D. BEL37X106
Transmission / motion
Transmission / Motion Drive Belt
37X110, 037X110MA 1/2" Wide x 43 7/8" O.D. BEL37X110
Mower deck
Cutter Deck Belt
37X111, 37X111MA 7/16" Wide x 45" O.D. BEL37X111
Application details

Which Murray X78A belt do you need?

Cutter Deck Belt

Recorded OEM references: 37X88, 037X88, 37X88MA, 710213. Published size: 1/2" Wide x 88 1/4" O.D.

Cutter Deck Belt

Recorded OEM references: 37X62, 037X62. Published size: 1/2" Wide x 86 1/2" O.D.

Engine to Deck Belt / Primary Cutter Deck Belt

Recorded OEM references: 37X89, 037X89, 037X89MA, 710217, 7101748YP. Published size: 1/2" Wide x 86" O.D.

Transmission / Motion Drive Belt

Recorded OEM references: 37X87, 037X87, 710341. Published size: 1/2" Wide x 97" O.D.

Transmission / Motion Drive Belt

Recorded OEM references: 37X106, 037X106, 37X106MA. Published size: 1/2" Wide x 89" O.D.

Transmission / Motion Drive Belt

Recorded OEM references: 37X110, 037X110MA. Published size: 1/2" Wide x 43 7/8" O.D.

Cutter Deck Belt

Recorded OEM references: 37X111, 37X111MA. Published size: 7/16" Wide x 45" O.D.

Important: Confirm the belt position, deck size, serial range and machine configuration before ordering. Belts with the same length can use different widths or profiles.
Common questions

Murray X78A belt FAQ

What belt does the Murray X78A use?

The listed belt applications are Cutter Deck Belt, Cutter Deck Belt, Engine to Deck Belt / Primary Cutter Deck Belt, Transmission / Motion Drive Belt, Transmission / Motion Drive Belt, Transmission / Motion Drive Belt, and Cutter Deck Belt. Recorded OEM references: 37X88, 037X88, 37X88MA, 710213, 37X62, 037X62, 37X89, 037X89, 037X89MA, 710217, 7101748YP, 37X87, 037X87, 710341, 37X106, 037X106, 37X106MA, 37X110, 037X110MA, 37X111, and 37X111MA.

What are the Murray X78A belt part numbers?

The recorded OEM references are 37X88, 037X88, 37X88MA, 710213, 37X62, 037X62, 37X89, 037X89, 037X89MA, 710217, 7101748YP, 37X87, 037X87, 710341, 37X106, 037X106, 37X106MA, 37X110, 037X110MA, 37X111, and 37X111MA. Match each number to the correct belt position before ordering.

What belt sizes does the Murray X78A use?

Cutter Deck Belt: 1/2" Wide x 88 1/4" O.D., Cutter Deck Belt: 1/2" Wide x 86 1/2" O.D., Engine to Deck Belt / Primary Cutter Deck Belt: 1/2" Wide x 86" O.D., Transmission / Motion Drive Belt: 1/2" Wide x 97" O.D., Transmission / Motion Drive Belt: 1/2" Wide x 89" O.D., Transmission / Motion Drive Belt: 1/2" Wide x 43 7/8" O.D., and Cutter Deck Belt: 7/16" Wide x 45" O.D.

Why are multiple belts listed for the Murray X78A?

This machine has 7 recorded belt applications. Different belts can operate the mower deck, transmission, PTO, clutch or other drive components.

Can I match the Murray X78A belt by length alone?

No. Width, profile, inside or outside circumference, belt position and OEM reference can all affect fitment. Match the belt function and OEM number first, then use the dimensions as a final check.