Compare Mowers
List prices are the manufacturer’s published figures, re-checked daily; they exclude tax, freight and dealer setup.
A side-by-side reference of each model's stated specifications. MowerFacts doesn’t give opinions: where a published, spec-derived rule can separate machines we mark a Data Pick and show the rule; here, read the values and decide what fits your needs.
Best suited for
What each model is built for, from its duty class and key specs. This is a neutral reference — MowerFacts does not rank one model above another.
- Walker Walker Model S18 — commercial: daily paid use and high acreage; 56-inch deck; gas powered
- Husqvarna Z454 — commercial: daily paid use and high acreage; 54-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- Walker Model S18 uses a Briggs & Stratton Vanguard engine; Z454 uses a Kawasaki engine. The engine maker builds the engine; the mower maker chooses the model, rating and fit, so the badge alone does not settle output or longevity.
- Walker Model S18 holds 4 gal (15.1 L) of fuel; Z454 holds 6 gal (22.7 L) of fuel, a 2 gal difference. Tank size bounds how long a machine runs between stops. Consumption varies with engine, load and speed, so hours per tank are not fixed.
- Walker Model S18 has a 18 hp engine; Z454 has a 22 hp engine, a 4 hp difference. Published horsepower is the maker's rating at a stated engine speed. It is a different measure from displacement, and two engines of equal rating can pull differently.
- Walker Model S18 has a 34.8 ci (570 cc) engine; Z454 has a 44.3 ci (725.9 cc) engine, a 9.5 ci difference. Displacement is the engine's size, not its output. A larger engine is not necessarily a more powerful one.
- Walker Model S18 weighs 675 lbs (306 kg); Z454 weighs 745 lbs (337.9 kg), a 70 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What Walker Model S18's weight means for a trailer ›
2 more differences, what isn’t comparable
Other verified differences
- Walker Model S18 has a 56 in (1,422 mm) deck; Z454 has a 54 in (1,372 mm) deck, a 2 in difference.
- Walker Model S18 cuts from 1 in (25 mm) to 4 in (102 mm); Z454 cuts from 1.5 in (38 mm) to 4.5 in (114 mm).
Not comparable
- Ground Speed: not published for Walker Model S18.
- Blades: not published for Walker Model S18.
- Fuel Type: not published for Z454.
- Deck Material: not published for Walker Model S18.
- Discharge: not published for Walker Model S18.
- Price: Walker Model S18 is dealer quote only.
Verified means each manufacturer publishes the figure. A bigger number is only a bigger number; nothing here says which machine is better. The full specification table is below.
Which is faster on your property? › Measure your lawn once and MowerFacts times all 2 against it.
| Spec | Walker Model S18 Walker · Commercial |
Z454 Husqvarna · Commercial |
|---|---|---|
| List price | dealer quote | $9,199 |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Briggs & Stratton Vanguard | Kawasaki |
| Displacement | 34.8 ci (570 cc) | 44.3 ci (725.9 cc) |
| Engine Power | 18 hp | 22 hp |
| Cylinders | — | 2 |
| Engine Model | — | FS Series V-Twin |
| Fuel Type | Regular grade unleaded gasoline (87 octane minimum, 10% ethanol maximum) | — |
| Deck | ||
| Cutting Width | 56 in (1422 mm) | 54 in (1372 mm) |
| Blades | — | 3 |
| Deck Material | — | Steel |
| Anti-Scalp Rollers | — | Yes |
| Min Cut Height | 1 in (25 mm) | 1.5 in (38 mm) |
| Discharge | — | Collect/Mulch/Side discharge |
| Cut Positions | — | 13 |
| Max Cut Height | 4 in (102 mm) | 4.5 in (114 mm) |
| Drive | ||
| Transmission | Dual, Independent Hydro-Gear® ZT3100 Integrated Transaxles | Hydrostatic |
| Ground Speed | — | 10 mph |
| Dimensions | ||
| Weight | 675 lbs (306 kg) | 745 lbs (337.9 kg) |
| Fuel Capacity | 4 gal (15.1 L) | 6 gal (22.7 L) |
| Length | — | 76.5 in (1943 mm) |
| Height | — | 49.3 in (1251 mm) |
| Commercial / Pro | ||
| Seat Type | — | Professional |
Where these models differ, explained
Walker Model S18: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — walker.com.
Z454: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — husqvarna.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.