Toro 20334
Wheels and drive gears for the Toro 20334
Short answer
The rear wheel, 59503, is the same across every range we checked. The front is not: Toro lists drive gear 59502 for the 315- and 316-series ranges, and 8 in. front wheel 137-4833P for the 400-series range instead.
Verified options
What we have verified
What decides it
The numbers that matter here
- Front, 315- and 316-series
Drive gear 59502
Toro’s name calls it an internal gear and its description calls it an 8-in. wheel assembly. We quote both rather than deciding which one arrives in the box.
- Front, 400-series
8 in. front wheel 137-4833P
The listing changes here — one range later than the maintenance kit changed. The two boundaries are independent.
- Rear, from 315000001 up
8 in. rear-wheel-drive wheel 59503
The same number in every run from 315000001 up, and no rear wheel listed below it. Toro describes it for rear-wheel-drive machines, and does not list it for the front-wheel-drive 20339.
- What we are not telling you
Whether any of these substitute for each other
Toro’s pages show which part appears under which serial range. They do not state that a part will not fit elsewhere, so neither do we. If you need to substitute, ask a dealer.
In detail
Choosing wheels and drive gears for this mower
This is the page that shows why "check your serial number" cannot be reduced to a single date. The 20334 has two boundaries, and they are not in the same place.
The engine maintenance kit changes between the 315- and 316-series ranges. The front of the machine changes one range later. Toro lists Replacement Front Wheel Drive Internal Gear 59502 for both 315000001–315999999 and 316000001–316999999, then does not list it for 400000000–401999999, where 8 Inch Front Wheel 137-4833P appears instead. So a 316-series machine sits under the newer kit and the older front part. If you work out "mine is a late machine" from the kit and then order the front wheel on that basis, you are ordering from a listing that does not cover your serial number.
One thing that absence does not mean: Toro still lists 59502 for the 20339 in that model’s own 400-series range. Whatever changed, it is specific to this machine’s listing rather than the part disappearing from Toro’s catalogue.
At the back, 59503 — which Toro describes as an 8 inch rear-wheel-drive replacement wheel — appears from 315000001 and in every run above it, seven of the fourteen. Below that serial Toro lists no rear wheel for this machine at all. The front-wheel-drive 20339 does not list it in either range we opened for that machine. We are not going to tell you why, because Toro does not say; we can only tell you what each listing shows.
We have not opened the eleven other ranges Toro publishes for this model number, so we cannot tell you whether the front changes again after 401999999.
The mistake we see most
Method
How we established this
We compared Toro’s parts listings for model 20334 under three serial ranges and recorded which wheel and drive-gear numbers appear in each. We cross-checked 59502 against Toro’s listing for the 20339 to confirm the part is still published, so that its absence from the 20334’s later range is described accurately as a change to that machine.
Same machine
Other parts we have verified for the Toro 20334
Other machines
Wheels and drive gears on the other mowers we cover
The answer is not the same on every machine, which is the point of checking rather than assuming.
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.
- 4
Parts — 22in Recycler Lawn Mower, model 20334, serial range 402000000–404319999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 38991, 59503, 130-8148, 131-4590, 490-7462, 130-2393, 137-4833P, and does not name 20234, 59502, 108-8120. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 5
Parts — 22in Recycler Lawn Mower, model 20334, serial range 404320000–405639613
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 38991, 59503, 130-8148, 131-4590, 490-7462, 130-2393, 137-4833P, and does not name 20234, 59502, 108-8120. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 6
Parts — 22in Recycler Lawn Mower, model 20334, serial range 405639614–406577036
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 38991, 59503, 130-8148, 131-4590, 490-7462, 130-2393, 137-4833P, and does not name 20234, 59502, 108-8120. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 7
Parts — 22in Recycler Lawn Mower, model 20334, serial range 406577037–999999999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 38991, 59503, 130-8148, 131-4590, 490-7462, 130-2393, 137-4833P, and does not name 20234, 59502, 108-8120. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 8
The Toro Company · Primary source · Accessed August 17, 2026
Lists 130-8148 in place of 20234, and adds 137-4837P (Replacement 11 in. Rear High Wheel). Still lists 38990 and 59502.
- 9
Parts — 22in Recycler Lawn Mower, model 20334, serial range 290000001–290999999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 108-8120, and does not name 20234, 38991, 59502, 59503, 130-8148, 131-4590, 490-7462, 130-2393, 137-4833P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 10
Parts — 22in Recycler Lawn Mower, model 20334, serial range 310000001–310999999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 108-8120, and does not name 20234, 38991, 59502, 59503, 130-8148, 131-4590, 490-7462, 130-2393, 137-4833P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 11
Parts — 22in Recycler Lawn Mower, model 20334, serial range 311000001–311999999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 108-8120, and does not name 20234, 38991, 59502, 59503, 130-8148, 131-4590, 490-7462, 130-2393, 137-4833P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 12
Parts — 22in Recycler Lawn Mower, model 20334, serial range 312000001–312999999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 108-8120, and does not name 20234, 38991, 59502, 59503, 130-8148, 131-4590, 490-7462, 130-2393, 137-4833P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 13
Parts — 22in Recycler Lawn Mower, model 20334, serial range 313000001–313999999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20234, 108-8120, and does not name 38991, 59502, 59503, 130-8148, 131-4590, 490-7462, 130-2393, 137-4833P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 14
Parts — 22in Recycler Lawn Mower, model 20334, serial range 314000001–314200000
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20234, 108-8120, and does not name 38991, 59502, 59503, 130-8148, 131-4590, 490-7462, 130-2393, 137-4833P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.
- 15
Parts — 22in Recycler Lawn Mower, model 20334, serial range 314200001–314999999
The Toro Company · Primary source · Accessed August 21, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector its own page carries. Of the parts this site holds, its accessory list names 20234, 108-8120, and does not name 38991, 59502, 59503, 130-8148, 131-4590, 490-7462, 130-2393, 137-4833P. The page carries further items this site holds no record for, among them engine oils, bags and a striping kit.