The John Deere X350 mower blade part number found is M154202. The blade set part numbers found are M170476 and M170477. The blade measurement captured is length 21 in (533 mm), width 2.5 in (64 mm), thickness 0.188 in (5 mm), and center hole round / 2.5 in (64 mm).
Blade part #M154202
Blade set part #M170476 and M170477
Blade sizelength 21 in (533 mm), width 2.5 in (64 mm), thickness 0.188 in (5 mm), and center hole round / 2.5 in (64 mm)
John Deere X350 Mower Blade Size and Part Numbers
Mower blade part number
M154202
Mower blade set part number
M170476 and M170477
Blade length
21 in (533 mm)
Blade width
2.5 in (64 mm)
Blade thickness
0.188 in (5 mm)
Blade center hole size
round / 2.5 in (64 mm)
Blade type
Gator
Blade Size Comparison Chart
Blade length comparison
This model
21 in
Average
20 in
Low
16 in
High
23 in
Blade width comparison
This model
2.5 in
Average
2.5 in
Low
2 in
High
3.5 in
Blade thickness comparison
This model
0.188 in
Average
0.188 in
Low
0.125 in
High
0.25 in
John Deere X350 Blade Notes
Blade note
The John Deere X350 blade listing captured here shows single blade part number M154202, blade set part numbers M170476 and M170477, and length 21 in (533 mm), width 2.5 in (64 mm), thickness 0.188 in (5 mm), and center hole round / 2.5 in (64 mm). Do not buy purely from model name if the mower deck or serial range is different
Blade type note
For the John Deere X350, blade type is listed as Gator. Pick the blade style for the job: clean discharge, bagging lift, or mulching
Fitment note
For the John Deere X350, use the listed specs as a buying guide, but confirm against the operator manual, parts diagram or old blade before ordering
John Deere X350 Mower Blade FAQ
Why can the right-length John Deere X350 blade still be wrong?
The blade length found is 21 in (533 mm), but length alone does not confirm fitment. Center-hole shape, blade offset, sail height and deck size can all change fit
Should you buy John Deere X350 blades by length only?
No. The blade width found is 2.5 in (64 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
Can you modify a John Deere X350 blade center hole to fit?
Do not do that. The captured center-hole detail is round / 2.5 in (64 mm). Grinding or drilling a mower blade can ruin balance and create vibration
What is the difference between the John Deere X350 blade number and blade set number?
The captured single blade number is M154202, while the captured blade set number is M170476 and M170477. Use the single blade number for one replacement and the set number when replacing the full deck set
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.
