Lawn Mower Blades Replacement Part Number Craftsman John Dee re 54 inch Deck GX21380 GY20679 GY20684 GY20686 Compatible with G110 190C LA150 LA175 D170 E180 S180, 3 Pack

What It Is

This is a 3-pack of replacement lawn mower blades designed for 54-inch cutting decks, compatible with Craftsman and John Deere models. Use them to replace dull or damaged blades for a clean, even cut on residential lawns.

Fitment & Compatibility

• Deck size: Only fits 54-inch decks; measure your deck width to confirm.
• Model numbers: Compatible with Craftsman G110, 190C, LA150, LA175, D170, E180, S180; also John Deere models using OEM part numbers GX21380, GY20679, GY20684, GY20686.
• OEM vs aftermarket: This is an aftermarket blade set. It may differ slightly in thickness or material from factory blades.
• Check: Verify blade length, center hole diameter, and offset (usually 0.5–1 inch) match your original. Measure your existing blade before ordering.

Key Things to Know

• Installation difficulty: Easy to moderate—requires a socket wrench and jack or mower tilt. Always disconnect the spark plug first.
• Quality: Aftermarket steel blades; they may dull faster than OEM but are cost-effective for the 3-pack.
• Common gotcha: These blades may not fit decks with a different spindle pattern or spindle height. Test fit one blade before installing all three.
• Safety: Replace all three blades at once to maintain balance, and sharpen annually or after heavy use.

Should You Buy It

If you have a 54-inch Craftsman or John Deere mower from the listed models and want a budget-friendly blade set for regular residential mowing, this is a solid value. Skip it if you need heavy-duty commercial blades or exact OEM specs.