Murray X66B Belt Size Guide - TractorCharts.com

The published Murray X66B lawn tractor/rear-engine rider transmission / motion drive belt size is 1/2" Wide x 30 3/16" O.D. The recorded OEM references are 37X65, 037X65, 037X65MA.

Belt replacement guide

Murray X66B belt size & replacement chart

OEM references, belt positions and published dimensions for this lawn tractor / rear-engine rider.

Equipment: Lawn Tractor / Rear-Engine RiderBelt applications: 1OEM references: 3Sizes listed: 1

Distinct belts1

OEM references3

Belt functions1

Published sizes1

Replacement lookup

Murray X66B belt chart

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

Belt application	OEM / replacement number	Published size	Listing SKU
Transmission / motion Transmission / Motion Drive Belt	37X65, 037X65, 037X65MA	1/2" Wide x 30 3/16" O.D.	BEL37X65

Application details

Murray X66B belt details

Transmission / Motion Drive Belt

Recorded OEM references: 37X65, 037X65, 037X65MA. Published size: 1/2" Wide x 30 3/16" 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 X66B belt FAQ

What belt does the Murray X66B use?

The listed belt application is Transmission / Motion Drive Belt. Recorded OEM references: 37X65, 037X65, and 037X65MA.

What are the Murray X66B belt part numbers?

The recorded OEM references are 37X65, 037X65, and 037X65MA. Match each number to the correct belt position before ordering.

What size belt does the Murray X66B use?

Transmission / Motion Drive Belt: 1/2" Wide x 30 3/16" O.D.

Can I match the Murray X66B 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.