A genuine Atco / MacAllister 51 cm replacement blade is the perfect upgrade for your Quattro 20/21SA or MacAllister Pro 50 mower. Made from premium steel, this blade delivers a clean cut while helping you mulch more efficiently and reduce the power needed to push the mower.
Key specifications
– Length: 510 mm (20 in)
– Width: 58 mm (2.3 in)
– Central mounting hole: 18 mm
– Side mounting hole: 8 mm
– Part numbers: 181004381/1 | 81004381/1
Why it works
– Improved grass collection – the tapered ends guide clippings toward the deck for better mulching.
– Energy‑saving design – sharper edges mean less resistance and lower fuel or battery use.
– Easy installation – simple bolt‑on fit; no special tools required.
– Durable construction – hardened steel resists wear for a long service life.
This blade is a direct fit for ATCO Quattro 21SA and MACALLISTER PRO 50 models, ensuring a seamless replacement that restores the mower’s original performance. Whether you’re tackling a small garden or a larger lawn, the Atco 51 cm blade gives you consistent cuts, smoother operation, and reliable durability—exactly what you need for a tidy, well‑maintained yard.
Reviews
There are no reviews yet.