John Deere STX30 Belt Size Guide

The John Deere STX30 uses two published belt sizes: 1/2" Wide x 102" I.D. for the transmission belt and 1/2" Wide x 100" I.D. for the transmission belt / cutter deck belt. Match each belt to its correct position and OEM reference before ordering.

Belt replacement guide

John Deere STX30 belt size & replacement chart

OEM references, belt positions and published dimensions for this mower / tractor — unspecified.

Equipment: Mower / Tractor — UnspecifiedBelt applications: 2OEM references: 3Sizes listed: 2

Distinct belts2

OEM references3

Belt functions1

Published sizes2

Replacement lookup

John Deere STX30 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 Belt	M74747	1/2" Wide x 102" I.D.	BEL68104
Transmission / motion Transmission Belt / Cutter Deck Belt	M110978, M41960	1/2" Wide x 100" I.D.	BEL68102

Application details

Which John Deere STX30 belt do you need?

Transmission Belt

Recorded OEM reference: M74747. Published size: 1/2" Wide x 102" I.D.

Transmission Belt / Cutter Deck Belt

Recorded OEM references: M110978, M41960. Published size: 1/2" Wide x 100" I.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

John Deere STX30 belt FAQ

What belt does the John Deere STX30 use?

The listed belt applications are Transmission Belt and Transmission Belt / Cutter Deck Belt. Recorded OEM references: M74747, M110978, and M41960.

What are the John Deere STX30 belt part numbers?

The recorded OEM references are M74747, M110978, and M41960. Match each number to the correct belt position before ordering.

What belt sizes does the John Deere STX30 use?

Transmission Belt: 1/2" Wide x 102" I.D. and Transmission Belt / Cutter Deck Belt: 1/2" Wide x 100" I.D.

Why are multiple belts listed for the John Deere STX30?

This machine has 2 recorded belt applications. Different belts can operate the mower deck, transmission, PTO, clutch or other drive components.

Can I match the John Deere STX30 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.