12PK Mulching Blades 48" for John Deere GX21784 LA145 LA140 LA165 X140 D140

12PK Mulching Blades for John Deere 48 in. Deck Applications

This 12-pack of mulching blades is an aftermarket replacement set intended for 48 in. cutting decks on select John Deere models. Mulching blades are shaped to recirculate clippings under the deck, cutting them repeatedly to return finer material to the lawn. Reference number GX21784 appears on each blade in the set.

Product Details

• Product Type: Mulching blades
• Reference Number: GX21784
• Quantity: 12 blades
• Deck Size: 48 in.

Fitment & Compatibility

• For John Deere LA145
• For John Deere LA140
• For John Deere LA165
• For John Deere X140
• For John Deere D140

Frequently Asked Questions

Q: What does the GX21784 reference number mean? A: GX21784 is the reference number supplied for these blades. Multiple reference numbers do not by themselves confirm interchangeability, so verify the number against your existing blade or equipment documentation.

Q: How do I confirm these blades fit my mower? A: Check your complete model number and deck size, then compare the required blade dimensions and center hole configuration with the blades you are replacing.

This is an aftermarket replacement part. Confirm fitment before purchase.