Drive belts · Toro
22 inch Drive Belt for RWD Toro WPM38991
Check this against your machine before you buy
Confirm the number on your old part, and check your mower’s serial number as well as its model number. On many mowers the serial range changes what fits.
Fitment
What this fits
| Machine | Serial range | Status | Evidence |
|---|---|---|---|
| Toro 20334Takes 1 | All | Confirmed fit | Listed by Toro as the 22 inch Drive Belt for RWD Toro WPM on its official parts pages for model 20334 under all three serial ranges we verified. |
1 confirmed · 0 conditional · 0 not verified. What these statuses mean
Reference
Specifications
- Drive type
- Rear-wheel drive
- Fits cutting width
- 22 in. (56 cm)
- Belt length and width
- Not published by ToroToro names the belt but publishes no dimensions on the pages we verified. Measure the belt you are replacing.
Selection
Choosing this part
Toro’s name for this belt says "RWD" — rear-wheel drive — and that is the part of it that matters. The front-wheel-drive 20339 is the same 22 in. cutting width with the same engine size, and it takes belt 38990 instead. Matching the specification of your mower to someone else’s will not catch that; matching the model number will.
Where to buy
Buying options
- Check price at Toro (opens in a new tab)
Toro
Price checked at the retailer
Opens Toro’s parts listing for the 20334. Check that the belt number reads 38991 and not 38990 before ordering.
Which retailers we list, and the order we list them in, is decided on usefulness to the reader — stock depth, shipping, and return terms. It is not decided by commission rate, and no retailer can pay for placement or for a better fitment verdict.
Related
Other parts for the same machines
Provenance
Sources
Last verified against these sources on August 17, 2026.
- 1
Parts — 22" Personal Pace Electric Start Mower, model 20334, serial range 315000001–315999999
The Toro Company · Primary source · Accessed August 17, 2026
Toro’s official parts listing for the earliest of the three ranges we verified. Lists 20234 (Engine Maintenance Kit for Briggs & Stratton Engine) and 108-8120 (TRACTION ASSIST KIT [PPG2]). Also lists 38991, 59534P, 59502, 59503 and 490-7462. The range selector on this page names thirteen further serial ranges for the same model number.
- 2
Parts — 22" Personal Pace Electric Start Mower, model 20334, serial range 316000001–316999999
The Toro Company · Primary source · Accessed August 17, 2026
The next published range. Lists 130-8148 (Briggs & Stratton EXi Engine Maintenance Kit Replacement) and 131-4590 (Traction Assist Handle) where the previous range listed 20234 and 108-8120. Still lists 59502; 137-4833P does not appear.
- 3
Parts — 22" Personal Pace Electric Start Mower, model 20334, serial range 400000000–401999999
The Toro Company · Primary source · Accessed August 17, 2026
The later range. Still lists 130-8148 and 131-4590, so the maintenance kit does not change again here. It lists 137-4833P (8 Inch Front Wheel) and does not list 59502 — a second, separate boundary within the same model number.