Mower belt cross reference: John Deere, Greenfield, Cox, Rover, MTD and more OEM numbers matched to our belts

The John Deere GX20072 belt, which replaced GY20570, crosses to our GX20072 replacement belt: a 13 mm (1/2") A-section belt made with Kevlar, 103.75 inches (2635 mm) outside, listed as the 42 inch cutter deck belt. The tables below match dozens more mower OEM numbers, in 36 rows, to the belt we sell.

Got the number off your old belt or out of your manual? Find it under your mower's brand, order the belt in that row, and you can stop there.

Source: our product listings, read 10 October 2026, and our team's sizing rules. Our belts are non-genuine replacements, listed by the OEM numbers they replace.

Start with the OEM number on the old belt or in the manual

The number your mower's maker gave the belt is the surest way to the right replacement. Our team goes by that number rather than a tape measure wherever it can. Look for it printed on the back of the old belt, or in the parts list of your owner's manual. Most mower makers publish their manuals online: Greenfield, for one, has its owner's manuals with parts lists on its manuals page.

Then check which belt it is. Many ride-ons run two or three belts (a cutter deck belt plus one or two drive belts), each with its own number, so the position column matters as much as the number.

Mower belt cross reference by brand

John Deere mower belts

The STX38 is named on several of our belt listings, for different positions and versions (hydro or gear, deck colour), so go by the number on the old belt or in your manual. More on GX20072 and the 48 inch GX21833 in our John Deere GX20072 / GY20570 belt guide. More John Deere belts are in the John Deere collection.

Greenfield mower belts

For the Mini Mow we also list GT2360 as an A118 drive belt, so check the number on your old belt. Which belt runs where on an Evolution 2000 or Fastcut is in our Greenfield GT18005 and GT20005 guide. More in the Greenfield collection.

Cox mower belts

Other Stockman years use other belts, so match the V number on your old belt. More in the Cox collection.

Rover mower belts

Later Rovers use MTD's 754- and 954- numbers: see the next table. More in the Rover collection.

MTD, Cub Cadet and Yardman mower belts

24 MTD numbers, and what 754 vs 954 means, are in our MTD, Cub Cadet and Yardman belt guide. More in the MTD collection.

Husqvarna, Craftsman, Poulan and Dixon mower belts

More in the Husqvarna collection.

Toro mower belts

More in the Toro collection.

Kubota, Scag, Snapper, Big Dog, Honda, Victa and Murray

Most belts we list for these and other makes are in their brand collection, such as Victa, Masport and Murray, and many are in our mower belts collection.

Source for every table: our product listings (titles, descriptions and interchange numbers), read 10 October 2026. Models are examples from each listing, which names more, so check yours on the listing.

Not in the table? Send us the OEM number

We list many more mower belts than fit here, so search our site for the OEM number first, without spaces or dashes if the first search finds nothing. Still no match? Send us the number from the old belt or your manual, plus the mower's make and model, and we'll check it for you.

Searching an A or B size, such as "A38 belt cross reference"?

An A or B code is already a belt size, not a mower maker's number. An A38 is 13 mm wide, 38 inches inside and 40 outside, and we sell it in our A-section V-belt range, A20 to A79. One of our listings also names that size for the Cox Scout (VA38) and Rover Colt (A05456). B codes work the same way, with the outside 3 inches longer: a B52 is in our B-section range, B24 to B88.

A US listing that reads "1/2 x 40" is the same A38, because the US figure is the outside length: our 1/2 x 95 guide shows the conversion. An AX or BX code is the cogged version of the same size (AX vs A, BX vs B), and our V-belt sizes chart covers every section.

Kevlar or standard? Match the old belt

In our experience, 99% of the deck (cutter) belts we sell are Kevlar, and a standard belt in a Kevlar position can shred within hours. Many drive belts need Kevlar too. A Kevlar belt can replace a standard belt of the same size, but not the other way round, so if the old belt had a K in its code, buy the K version.

On Greenfield's cutter deck, the standard B100 does the job for about 98% of our Greenfield customers. When one fails, we recommend the Kevlar BK100 from then on, and our team sees Kevlar as the better value. More in Do I need a Kevlar mower belt?

Questions people also ask

What is the GX20006 belt cross reference?

John Deere GX20006, also numbered UC30568, is the 42 and 48 inch transmission drive belt in our listings. We sell it as a Kevlar AK87 or a standard A87: 13 mm wide, 87 inches inside and 89 outside. The A87 listing also names Rover A12096.

How do you measure a mower belt?

Measure the top width first: 13 mm is an A belt and 17 mm a B. Then measure round the outside and take off 2 inches for an A or 3 for a B to get the number. If you can read the OEM number, go by that instead.

Are your mower belts genuine?

No. They're aftermarket replacements, and each listing names the OEM numbers it replaces. Check your manual for the correct number, as some mowers use different belts by year or deck.

Related reading

• John Deere GX20072 / GY20570 belt: size and the Australian replacement
• Do I need a Kevlar mower belt? Kevlar vs standard V-belts, and A103K vs AK103
• V-belt sizes chart: A, B, C, Z (M) and SPZ widths, and how to read the number

Sources

• Bearings Express product listings: titles, descriptions, interchange numbers and size details for every belt in the tables, read 10 October 2026.
• Greenfield, Manuals page, https://greenfield.com.au/manuals/, read 2 October 2026 and rechecked 12 October 2026.

Checked against Bearings Express product listings and our team's advice on 10 October 2026.