Original MTD clutch — part number 11129-107 — direct replacement clutch assembly for a range of walk‑behind mowers.

This compact clutch is what engages and disengages the cutting blade; it’s supplied as a single replacement unit and will restore reliable blade engagement where the original clutch is slipping or won’t hold.

Example fitments include MTD models such as 448HR, 448KJR, 448KJW, 448KR and the 553HRS / 553HWS series, and equivalent Lawnflite / Danarm / Kaaz machines (for example LM5360HX / 553HW and LM484HX) — check your mower’s parts diagram or model plate against 11129-107 to confirm compatibility.


If you need the part right away, this original MTD 11129-107 is the direct clutch replacement used on the models above and is the correct part to stop blade‑slip and restore normal engagement.