AB4200D Lawn Mower Blade Compatible with Power+ 42" Z6 Zero Turn Riding Mower Models ZT4204L, 21 Inch Mulch Lawn Mower Blade Set

What It Is

This is a 21-inch mulch lawn mower blade set designed for the Power+ 42-inch Z6 Zero Turn Riding Mower models ZT4204L. It replaces worn or damaged blades to improve cut quality and mulching performance.

Fitment & Compatibility

• Deck size: Fits 42-inch cutting decks only. Measure your blade length; it must be exactly 21 inches from tip to tip.
• Model fit: Confirmed for Power+ ZT4204L. Not guaranteed for other Z6 variants or brands—verify your mower model number on the deck or frame sticker.
• OEM vs aftermarket: This is a non-OEM (aftermarket) blade. May differ slightly in thickness, balance, or mounting hole shape from original Power+ blades.
• Check before buying: Remove one existing blade and compare the center hole diameter, thickness, and offset (if any). Also confirm the number of blades needed—some 42" decks use three blades, not two.

Key Things to Know

• Quality concerns: Current 2.0-star rating (3 reviews) suggests potential issues with fit, balance, or durability. Read recent reviews for specific complaints.
• Installation difficulty: Moderate. Requires a socket wrench and torque wrench (recommended 40-50 ft-lbs). Always lift mower and block securely.
• Common gotchas: Aftermarket blades may need balancing before installation. Uneven balance causes vibration, poor cut, and spindle wear.
• Mulching vs bagging: Designed for mulching (clippings recut and left on lawn). Not ideal for bagging or side-discharge use.

Should You Buy It

Only if you need a budget replacement for a Power+ ZT4204L and are willing to risk fitment or balance issues. For reliable performance, spend more on OEM Power+ blades or a higher-rated aftermarket set with verified compatibility.