Mower blades · Toro
15.4 Inch Atomic Blade20120P
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 21199 | 407700000–410243166 | Confirmed fit | Listed by Toro as the 15.4 Inch Atomic Blade on its official parts page for model 21199, serial range 407700000–410243166. |
| Toro 21199 | 400000000–402081999 | Not verified | Toro does not list blade 20120P on its parts page for model 21199, serial range 400000000–402081999; that range shows 20122P. |
| Toro 21199 | 402082000–403599999 | Not verified | Toro does not list blade 20120P on its parts page for model 21199, serial range 402082000–403599999; that range shows 20122P. |
| Toro 21199 | 414709996–999999999 | Not verified | Toro does not list blade 20120P on its parts page for model 21199, serial range 414709996–999999999; that latest range shows 20122P again. |
1 confirmed · 0 conditional · 3 not verified. What these statuses mean
Reference
Specifications
- Blade length
- 15.4 in., per Toro’s own name for the part
- Blade style
- AtomicToro’s name for the style. The pages we opened do not describe how it differs from the hi-lift blade listed for other ranges of the same machine.
Selection
Choosing this part
The only one of the four 21199 listings we opened that shows this blade is 407700000–410243166. The ranges we opened before it and after it both show hi-lift blade 20122P instead — though they are not the immediately adjacent ranges, since seven of Toro’s eleven listings for this model remain unopened. Two digits separate the numbers and one word separates the names, which makes this an easy part to order by mistake if you are matching on "15.4 inch blade for a TimeMaster".
Related
Other parts for the same machines
Provenance
Sources
Last verified against these sources on August 17, 2026.
- 1
Parts — 30in TimeMaster Lawn Mower, model 21199, serial range 402082000–403599999
The Toro Company · Primary source · Accessed August 17, 2026
One range later. The maintenance kit is 130-8146 (Engine Maintenance Kit for Walk-Behind Power Mower) where the preceding range listed 130-8149. Blade 20122P is unchanged.
- 2
Parts — 30in TimeMaster Lawn Mower, model 21199, serial range 407700000–410243166
The Toro Company · Primary source · Accessed August 17, 2026
No engine maintenance kit appears in this range’s accessory list at all. The blade shown is 20120P (15.4 Inch Atomic Blade), not 20122P.
- 3
Parts — 30in TimeMaster Lawn Mower, model 21199, serial range 414709996–999999999
The Toro Company · Primary source · Accessed August 17, 2026
The latest published range. Still no maintenance kit. Blade 20122P is listed again, and 20120P is not — so across the four ranges we opened the blade number does not move in one direction.
- 4
Parts — 30in TimeMaster Lawn Mower, model 21199, serial range 400000000–402081999
The Toro Company · Primary source · Accessed August 17, 2026
Earliest of the four ranges we opened. Lists 130-8149 (BRIGGS MAINT KIT - TM 17 & NEWER) and 20122P (15.4 Inch Hi-Lift Replacement Blade Kit (TimeMaster)). The range selector names ten further ranges for this model number.