Bolens ST125 Belt Size Guide

The Bolens ST125 lawn/garden tractor uses two published belt sizes: 1/2" Wide x 103" I.D. for the cutter deck belt and 1/2" Wide x 95" I.D. for the transmission drive belt. Match each belt to its correct position and OEM reference before ordering.
Belt replacement guide

Bolens ST125 belt size & replacement chart

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

Equipment: Lawn/Garden TractorBelt applications: 2OEM references: 2Sizes listed: 2
Distinct belts2
OEM references2
Belt functions2
Published sizes2
Replacement lookup

Bolens ST125 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
1746823 1/2" Wide x 103" I.D. BELA103
Transmission / motion
Transmission Drive Belt
1747188 1/2" Wide x 95" I.D. BEL6897
Application details

Which Bolens ST125 belt do you need?

Cutter Deck Belt

Recorded OEM reference: 1746823. Published size: 1/2" Wide x 103" I.D.

Transmission Drive Belt

Recorded OEM reference: 1747188. Published size: 1/2" Wide x 95" 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

Bolens ST125 belt FAQ

What belt does the Bolens ST125 use?

The listed belt applications are Cutter Deck Belt and Transmission Drive Belt. Recorded OEM references: 1746823 and 1747188.

What are the Bolens ST125 belt part numbers?

The recorded OEM references are 1746823 and 1747188. Match each number to the correct belt position before ordering.

What belt sizes does the Bolens ST125 use?

Cutter Deck Belt: 1/2" Wide x 103" I.D. and Transmission Drive Belt: 1/2" Wide x 95" I.D.

Why are multiple belts listed for the Bolens ST125?

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 Bolens ST125 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.