Alko Lawn Mower Blade – 20 in (51 cm) replacement for models 51, 520, 520BR, 520HW & 5210HW
Upgrade your AL‑KO mower with a durable, powder‑coated steel blade that cuts cleanly and mulches efficiently. Designed with dual‑curved ends, the blade sweeps grass and debris straight into the collection box, giving you a neater finish on any garden size.
Key benefits
– Maximum grass capture – curved edges pull cut material into the bag for less mess.
– Improved mulching – fine cuts turn clippings into natural fertilizer.
– Rusted‑proof finish – powder coating resists weather and corrosion for long‑term performance.
Specifications
| Dimension | Approx. |
|---|---|
| Blade length | 51 cm / 20 in |
| Blade width | 55 mm |
| Centre hole | 20 mm |
| Outer holes | 12 mm (2) |
| Hole spacing | 77 mm |
| Material | Steel (black powder coat) |
Compatible with a wide range of AL‑KO models, including 520BR Premium, 520HW, 5210HW, Easy‑Mow series and more (see full list in the product data). This is a high‑quality aftermarket part that meets or exceeds original specifications, offering reliable cutting power without the premium price tag.
Replace your worn blade today and enjoy smoother mowing, better mulching, and a cleaner garden every time you push the mower.





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