Ariens Gravely BLADE- MULCH 18.00" 04794400 Set of 3

What It Is

This is a set of three OEM Ariens/Gravely 18-inch mulching blades (part #04794400) designed to replace worn blades on compatible zero-turn mowers. They are intended for mulching grass clippings into fine particles that decompose quickly, improving lawn health.

Fitment & Compatibility

Before buying, confirm your mower deck size is exactly 54 inches (three 18-inch blades). This set fits specific Ariens and Gravely models, including the Ariens Zoom 54, Gravely Pro-Turn 52/54, and Gravely ZT HD 54. Check your owner’s manual or current blade part number. These are OEM blades, so they match factory specs exactly—no modification needed. Measure your blade length, width, and center hole diameter (typically 1-inch) to verify. Do not use on 48-inch or 60-inch decks.

Key Things to Know

• Mulching vs. standard blades: Mulching blades have a curved, serrated design that recirculates clippings. They produce finer clippings but may not discharge as well as standard blades.
• Installation difficulty: Easy with basic tools (socket wrench, torque wrench). Torque blade bolts to 70–90 ft-lbs. Use a blade removal tool to prevent spinning.
• Common gotcha: These blades are thinner than some aftermarket alternatives—they wear faster but cut cleaner. Replace when edges dull or nicked.
• OEM advantage: Guaranteed fit and balance; no need to drill or modify. Aftermarket sets may save money but risk vibration or poor cut quality.

Should You Buy It

Buy this set if you own a 54-inch Ariens or Gravely zero-turn and want reliable, factory-spec mulching performance. It’s ideal for homeowners or light commercial users who prioritize fine clippings and easy installation over blade longevity. If you need heavy-duty blades for abrasive conditions, consider a thicker aftermarket option.