Oregon 3 Pack 396-730 G6 Gator Mulcher Blade for John Deere TCU15881 M144196

What It Is

The Oregon 3 Pack 396-730 G6 Gator Mulcher Blade is a set of three aftermarket mulching blades designed for select John Deere zero-turn mowers. These blades replace OEM part numbers TCU15881 and M144196, optimized for fine grass clipping mulching and improved bagging performance on 48-inch and 54-inch decks.

Fitment & Compatibility

Before buying, verify your mower deck size and model. These blades fit John Deere Z900A, Z920A, Z930A, Z940A, Z950A, Z960A, and Z970A zero-turn mowers with 48-inch or 54-inch fabricated decks. Also compatible with 700-series and 900-series residential zero-turn models using the same OEM blade pattern. Measure your existing blade length—these are 19.5 inches long with a 1-inch center hole and 0.25-inch thickness. Not for 42-inch or 60-inch decks. Aftermarket replacement, not OEM John Deere—quality is high but check for any deck interference on non-listed models.

Key Things to Know

• Mulching performance: G6 Gator design with serrated edges and angled wings produces finer clippings for healthier lawns. Works best with dry grass—wet clippings may clump.
• Installation difficulty: Easy to moderate. Requires a socket wrench and torque wrench (recommended 70-90 ft-lbs). Use thread locker on blade bolts to prevent loosening.
• Common gotchas: Blades are directional—install with the air-lift wing facing upward toward the deck. Do not mix with standard lift blades on the same spindle. Check blade bolt torque after first 5 minutes of use.
• Durability: Heat-treated steel with a coated edge for wear resistance. Expect 25-50 hours of mowing before sharpening, depending on debris.

Should You Buy It

Buy this set if you own a compatible John Deere zero-turn mower (48-inch or 54-inch deck) and want improved mulching quality over standard blades. It’s a solid aftermarket upgrade that saves money compared to OEM, but confirm your deck model and blade length first to avoid fitment issues. Not for push mowers or other brands.