STIHL MS 251 Wood Boss
#18 in GasFull review
A fuel efficient 18 in STIHL for homeowners who cut a few cords a year and want dealer support.
STIHL $399.99$399.99
The STIHL MS 251 Wood Boss and the STIHL MS 250 are evenly matched, rated 3.0 and 2.9. The STIHL MS 251 Wood Boss costs $30 less ($399.99 vs $429.99).
STIHL MS 250
#19 in GasFull review
A light, well proven firewood saw for homeowners who cut in cold winters.
STIHL $429.99$429.99
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every gas chainsaw; a clear win is highlighted. How we rank explains each one.
| Factor weight | STIHL MS 251 Wood Boss | STIHL MS 250 |
|---|---|---|
| Overall rating | 3.0/5 | 2.9/5 |
| Value 30% | 42 $22.22 per inch of bar ($399.99, 18 in bar) | 36 $23.89 per inch of bar ($429.99, 18 in bar) |
| Power 25% | 42 45.6 cc engine | 42 45.4 cc engine |
| Weight 15% | 77 10.6 lb (powerhead) | 84 10.1 lb (powerhead) |
| Bar 10% | 75 18 in bar | 75 18 in bar |
| Warranty 20% | 0 1-year warranty | 0 1-year warranty |
Specifications
| STIHL MS 251 Wood Boss | STIHL MS 250 | |
|---|---|---|
| Cutting | ||
| Bar length | 18 in | 18 in |
| Chain pitch | .325 in (RM3) | .325 in (RM3) |
| Tool-free chain tension | - | No |
| Power | ||
| Engine or battery | 45.6 cc, 3 hp | 45.4 cc, 3 hp |
| Build | ||
| Weight | 10.6 lb (powerhead) | 10.1 lb (powerhead) |
| Anti-vibration | Yes | Yes |
| Warranty | 1 year | 1 year |