Original MTD replacement blade 742‑0495 — a vented cutting blade made to fit 76 cm (approx. 8‑knife) rear‑ejection decks.

Exact working dimensions: diagonal length ~245 mm, blade width ~63 mm, thickness 3.5 mm; centre (main) bore ≈21.5 mm; two lateral holes Ø ≈6.5 mm and 8 mm with a centre‑to‑centre spacing of ≈57.5 mm — matches the factory bolt pattern for direct swap.

Example MTD models this part is used on include M400, M500, M510C, B560C, K670C / K675C and L670C — listed as compatible with the 742‑0495 family (also referenced as 742‑0495B / 942‑0495).

The blade is ventilated to help airflow under the deck for cleaner discharge/mulching and is shaped for the standard left→right rotation used on these decks; because it matches the original mounting bores and spacing you can replace the worn blade without modifying the deck. This original MTD part appears in common MTD spare parts listings.

If your machine uses the listed bolt pattern and bore measurements, this 742‑0495 blade provides an immediate, dimension‑matched replacement to restore cutting performance.