MTD 918-06978 Spindle Assembly w/ 5.57" Pulley (54" Deck, Star Shaft)

The Genuine OEM MTD Spindle Assembly 918-06978 is the correct replacement deck spindle for select MTD riding mowers and RZT zero-turn mowers equipped with 54-inch cutting decks. This spindle comes pre-installed with a 5.57" pulley and features a star shaft design to ensure proper blade fitment, smooth operation, and consistent cutting performance.

If your mower deck is producing excessive vibration, uneven cutting, blade wobble, or bearing noise, replacing a worn spindle with this OEM assembly restores dependable blade engagement and proper deck performance.

✅ IMPORTANT: Always confirm exact fitment using your mower model number before ordering.

Replaces Part Numbers:
490-130-C013
490-130-F013
490-130-Y013
618-06978
CMXGZAM130013

Fits:
MTD Riding Mowers & RZT Mowers using 54" cutting decks (varies by model)

Features:

• Genuine OEM spindle assembly for factory-correct fit

• Includes Pulley (mounting hardware not included)

• Star shaft spindle for correct blade alignment

• Built for reliable blade performance and long service life

Specifications:
Deck Cutting Width: 54 in
Spindle Pulley Diameter: 5.57 in
Spindle Shaft Pattern: Star

Includes:
(1) Spindle Assembly with Pulley (does not include mounting screws)

FITS: