The John Deere LX178 mower blade part numbers found are M112991, AM141040, AM137325, and M154158. The deck uses 3 blades.
Blade part #M112991, AM141040, AM137325, and M154158
Blade count3 blades
John Deere LX178 Mower Blade Size and Part Numbers
Mower blade part number
M112991, AM141040, AM137325, and M154158
Number of blades
3 blades
Blade type
high-lift, mulching, and bagging
John Deere LX178 Blade Notes
Blade note
The John Deere LX178 blade listing captured here shows single blade part numbers M112991, AM141040, AM137325, and M154158. Do not buy purely from model name if the mower deck or serial range is different
Deck note
For the John Deere LX178, the captured deck information is blade count 3 blades. Deck size matters because the same model family can use different blade kits
Blade type note
For the John Deere LX178, blade type is listed as high-lift, mulching, and bagging. Pick the blade style for the job: clean discharge, bagging lift, or mulching
Fitment note
For the John Deere LX178, use the listed specs as a buying guide, but confirm against the operator manual, parts diagram or old blade before ordering
John Deere LX178 Mower Blade FAQ
Can you swap John Deere LX178 blade types?
The blade type captured is high-lift, mulching, and bagging. You can often choose a different style only if it fits the same deck and spindle setup. Use M112991, AM141040, AM137325, and M154158 as the fitment starting point
Is the captured John Deere LX178 blade part numbers enough to buy from?
The captured blade part numbers is M112991, AM141040, AM137325, and M154158. That helps with OEM lookup, but the blade length, width and center hole were not fully captured here. Confirm the deck or old blade before trusting an aftermarket cross-reference
Official information note
Mistakes do happen. Blade specs can change by year, mower deck, spindle, serial range and regional parts catalog. Please check the operator manual, old blade stamp, deck tag and official John Deere parts catalog before ordering replacement blades.
