The John Deere E90 mower blade part number found is M144202. The blade set part numbers found are M170176 and M170177. The blade measurement captured is length 21.34 in (542 mm) and width 2.75 in (70 mm). The deck uses 1 blade. The captured deck size is 21 in deck.
Blade part #M144202
Blade set part #M170176 and M170177
Blade sizelength 21.34 in (542 mm) and width 2.75 in (70 mm)
Blade count1 blade
Deck size21 in deck
John Deere E90 Mower Blade Size and Part Numbers
Mower blade part number
M144202
Mower blade set part number
M170176 and M170177
Blade length
21.34 in (542 mm)
Blade width
2.75 in (70 mm)
Number of blades
1 blade
Deck size
21 in deck
Blade type
high-lift, mulching, and 3-in-1
Blade Size Comparison Chart
Blade length comparison
This model
21.34 in
Average
20 in
Low
16 in
High
23 in
Blade width comparison
This model
2.75 in
Average
2.5 in
Low
2 in
High
3.5 in
Mower deck size comparison
This model
21 in
Average
38 in
Low
30 in
High
48 in
John Deere E90 Blade Notes
Blade note
The John Deere E90 blade listing captured here shows single blade part number M144202, blade set part numbers M170176 and M170177, and length 21.34 in (542 mm) and width 2.75 in (70 mm). Do not buy purely from model name if the mower deck or serial range is different
Deck note
For the John Deere E90, the captured deck information is deck size 21 in deck and blade count 1 blade. Deck size matters because the same model family can use different blade kits
Blade type note
For the John Deere E90, blade type is listed as high-lift, mulching, and 3-in-1. Pick the blade style for the job: clean discharge, bagging lift, or mulching
Fitment note
The blunt rule with the John Deere E90: part number and center hole beat guesswork. A blade can be the right length and still be wrong
John Deere E90 Mower Blade FAQ
What should you check when fitting a 21.34 in (542 mm) blade on the John Deere E90?
A 21.34 in (542 mm) blade needs the right center hole, lift style and deck clearance. That is a common lawn tractor blade length range, but it still needs the right center hole, sail/lift shape and deck fitment. Spin the blade by hand after fitting to confirm it clears the deck
Should you buy John Deere E90 blades by length only?
No. The blade width found is 2.75 in (70 mm). That is a normal mower blade width range. Width affects airflow, lift and clipping movement under the deck. Use length, width, center hole and OEM part number together where possible
Should you buy one John Deere E90 blade or a full set?
The single blade number captured is M144202, and the set number captured is M170176 and M170177. If one blade is bent from damage, one may be fine; if they are worn down, replacing the full set usually gives a cleaner cut
Why does the John Deere E90 deck size matter before buying blades?
The captured deck setup is 21 in deck with 1 blade. That matters because blade sets are deck-specific, not just tractor-model-specific
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.
