3 USA Mower Blades Toothed for Gravely 00450300, 4916400, 36" 52" Deck

What It Is

This is a set of three toothed (mulching) mower blades designed for Gravely zero-turn mowers with 36" or 52" decks. The serrated edge helps chop grass finer for better mulching or bagging performance.

Fitment & Compatibility

Check three things before buying:

1. Deck size – Works only on 36" or 52" Gravely decks. Measure your deck width from outside to outside.
2. OEM part numbers – Replaces Gravely 00450300 and 4916400. If your mower uses these numbers, these blades fit.
3. Blade dimensions – Each blade is 18.5" long, 2.5" wide, with a 0.25" center hole and 1" diameter center hole. Measure your current blade to confirm.

These are aftermarket blades, not Gravely OEM. They fit most 36" and 52" Gravely zero-turn models (e.g., ZT, ZTHD, ZTX series) that use the listed OEM numbers. Not compatible with 48" or 60" decks.

Key Things to Buy

• Quality – Made in USA, heat-treated steel. Users report they hold an edge well and resist bending.
• Installation – Moderate difficulty. You’ll need a torque wrench (spec is 70-90 ft-lbs). Lift or block the deck safely.
• Common gotcha – The center hole fits most spindles, but check your spindle’s pilot diameter. Some older models may need a different blade.
• Set includes three blades – One for each spindle. No extra hardware included (use your existing bolts/washers).

Should You Buy It

Buy these if you have a Gravely 36" or 52" deck and want a solid, USA-made mulching blade at a good price. They’re a reliable aftermarket alternative to OEM blades, especially for heavy mulching or bagging. Avoid if you need a standard lift blade for side-discharge only.