Production run
Toro 20340 partsSerial 404330000–405699999
The first of the 20340's five listings, all open, to carry a front wheel — 137-4833P — and a Smart Stow cover. Neither is on the three runs below.
At your boundary
What changes at the edges of this run
Wheels and drive gears
—→137-4833Pat 404330000
8 Inch Front Wheel 137-4833P is among this range’s accessories. It is among none of the three earlier listings, and the one directly below this range is consecutive with it.
Because the two listings are consecutive, the serial is a real edge rather than a bracket. If your machine is below it, Toro lists no front wheel for it at all.
Covers and storage
—→490-2012at 404330000
Smart Stow Cover 490-2012 appears here and is absent from the listing directly below.
It is the same edge as the wheel. A cover and a wheel arriving on one serial looks to us like a listing being extended rather than a machine being changed, but the page gives no cause and that reading is ours.
In detail
This production run
Two parts start being listed for the 20340 here, and neither of them stops being listed afterwards.
The 8 Inch Front Wheel, 137-4833P, is the one people are looking for. Toro names it among the accessories for this range and for the range above it, and for none of the three below. The Smart Stow Cover, 490-2012, follows exactly the same pattern.
The listing directly below this one ends at 404329999 and is consecutive with this one, so this serial is where the change is, not merely where we can first see it. That is a stronger statement than this site can usually make, and it is available only because all five of the listings Toro publishes for this model number have been read.
What has not changed here: the blade is still 59534P and the engine maintenance kit is still 130-8148, as they are in the run below and the run above. The kit boundary on this machine is at 400000000, and the traction assist handle 131-4590 is listed for every run.
Confirmed
What we have recorded for this serial range
We record the part categories this site covers. Toro’s own listing for this range carries other accessories besides.
Mower blades
22 Inch Recycler Blade 59534P
Listed by Toro as 22 Inch Recycler Blade on its official parts page for model 20340, serial range 404330000–405699999.
Engine maintenance kits
Briggs & Stratton EXi Engine Maintenance Kit Replacement 130-8148
Listed by Toro as Briggs & Stratton EXi Engine Maintenance Kit Replacement on its official parts page for model 20340, serial range 404330000–405699999.
Wheels and drive gears
8 Inch Front Wheel 137-4833P
Listed by Toro as 8 Inch Front Wheel on its official parts page for model 20340, serial range 404330000–405699999.
Handles and controls
Traction Assist Handle 131-4590
Listed by Toro as Traction Assist Handle on its official parts page for model 20340, serial range 404330000–405699999.
Fuel treatment
Premium Fuel Treatment (0.5 oz.) 130-2393
Listed by Toro as Premium Fuel Treatment (0.5 oz.) on its official parts page for model 20340, serial range 404330000–405699999.
Fuel treatment
Premium Fuel Treatment (12 oz.) 131-6572
Listed by Toro as Premium Fuel Treatment (12 oz.) among the accessories on its parts page for model 20340, serial range 404330000–405699999.
Engine oil
SAE 30 4-Cycle Lawn Mower Engine Oil 32 oz 38903
Listed by Toro as SAE 30 4-Cycle Lawn Mower Engine Oil 32 oz among the accessories on its parts page for model 20340, serial range 404330000–405699999.
Engine oil
SAE 30 4-Cycle Summer Engine Oil 18 oz. 38916
Listed by Toro as SAE 30 4-Cycle Summer Engine Oil 18 oz. among the accessories on its parts page for model 20340, serial range 404330000–405699999.
Engine oil
Toro full synthetic 10W-30 engine oil 117-0066
Listed by Toro as *OBS* Toro full synthetic 10W-30 engine oil among the accessories on its parts page for model 20340, serial range 404330000–405699999.
Grass bags
Replacement Bag 59310
Listed by Toro as Replacement Bag among the accessories on its parts page for model 20340, serial range 404330000–405699999.
Striping kits
Striping Kit for Walk-Behind Mowers 20601
Listed by Toro as Striping Kit for Walk-Behind Mowers among the accessories on its parts page for model 20340, serial range 404330000–405699999.
Not listed here
Listed for a neighbouring run, but not this one
Absence from a parts listing is not a statement that a part does not fit. It is the manufacturer not saying.
20234 Not verified
Toro does not name Engine Maintenance Kit for Briggs & Stratton Engine (20234) among the accessories on its parts page for model 20340, serial range 404330000–405699999.
120-3303 Not verified
Toro does not list engine maintenance kit 20234 among the accessories on its parts page for model 20340, serial range 404330000–405699999. This site reaches this component only as a content of that kit, so with the kit absent there is no route from Toro’s pages to this part for this range — a fact about the route, not about the machine.
120-3305 Not verified
Toro does not list engine maintenance kit 20234 among the accessories on its parts page for model 20340, serial range 404330000–405699999. This site reaches this component only as a content of that kit, so with the kit absent there is no route from Toro’s pages to this part for this range — a fact about the route, not about the machine.
If you are close to the edge
Serial numbers near a boundary
The lower edge of this range is the sharp one. A serial just under it — 404329000 and below — sits in a run for which Toro lists no front wheel, so check the plate before ordering 137-4833P on the strength of this page.
Other runs
Other production runs of the 20340
Toro publishes 5 parts listings for this model number. We have opened 5.
Method
How we established this
We opened all five of Toro’s parts listings for model 20340, a count taken from the serial-range selector the listings themselves carry, and compared the accessories they name within the part categories this site records. The pages also carry accessories this site holds no record for, so this is a comparison within the categories it records rather than an exhaustive diff of what they list.
The common mistake: Assuming a part listed for later machines was always available. Three earlier 20340 runs name no front wheel at all, so an owner of one of those has no listed part to order and this page does not invent one.
Provenance
Sources
Last verified against these sources on August 20, 2026.
- 1
Parts — 22in Recycler Lawn Mower with SmartStow, model 20340, serial range 404330000–405699999
The Toro Company · Primary source · Accessed August 20, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector on the model’s other listings. Within the part categories this site records, its accessory list names 59534P, 130-8148, 137-4833P, 490-2012, and does not name 20234. The page carries further accessories this site holds no record for, among them engine oils, bags and fuel products other than 130-2393.
- 2
Engine Maintenance Kit for Briggs & Stratton Engine (Part # 20234)
The Toro Company · Primary source · Accessed August 31, 2026
Toro’s product page for the kit, and one of the few in this family that is a page for the number requested rather than for a part replacing it. It itemizes the kit: 20 oz. SAE 30 engine oil (120-3306), a spark plug (120-3305), an air filter (120-3303) and a 0.5 oz. packet of fuel treatment (130-2393). It carries no line saying this kit replaces another number or has been replaced by one. **Re-read 31 August 2026 and unchanged in every particular, including the 0.5 oz.** — which matters, because the page Toro serves for 130-8148 gives the same packet as .05 oz. Two further details this record had not held: the internal designation TORO WPM MAINT KIT - BRIGGS, and a Specifications row reading Service Pack Yes.
- 3
Parts — 22in Recycler Lawn Mower with SmartStow, model 20340, serial range 401500000–404329999
The Toro Company · Primary source · Accessed August 20, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector on the model’s other listings. Within the part categories this site records, its accessory list names 59534P, 130-8148, and does not name 20234, 137-4833P, 490-2012. The page carries further accessories this site holds no record for, among them engine oils, bags and fuel products other than 130-2393.
- 4
Parts — 22in Recycler Lawn Mower with SmartStow, model 20340, serial range 405700000–999999999
The Toro Company · Primary source · Accessed August 20, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector on the model’s other listings. Within the part categories this site records, its accessory list names 59534P, 130-8148, 137-4833P, 490-2012, and does not name 20234. The page carries further accessories this site holds no record for, among them engine oils, bags and fuel products other than 130-2393.
- 5
Parts — 22in Recycler Lawn Mower with SmartStow, model 20340, serial range 400000000–401499999
The Toro Company · Primary source · Accessed August 16, 2026
Toro’s official parts listing for the later serial range of the same model number. Lists 59534P and 130-8148 (Briggs & Stratton EXi Engine Maintenance Kit Replacement) — note the maintenance kit differs from the earlier range.