The blade set part numbers found are M144176 and M144177. The blade measurement captured is length 17.12 in (435 mm), width 2.75 in (70 mm), thickness 0.188 in (5 mm), and center hole star / 0.75 in (19 mm). The deck uses 2 blades.
John Deere LA155 Mower Blade Size and Part Numbers
| Mower blade set part number | M144176 and M144177 |
|---|---|
| Blade length | 17.12 in (435 mm) |
| Blade width | 2.75 in (70 mm) |
| Blade thickness | 0.188 in (5 mm) |
| Blade center hole size | star / 0.75 in (19 mm) |
| Number of blades | 2 blades |
| Blade type | high-lift, mulching, standard, and 3-in-1 |
Blade Size Comparison Chart
Blade length comparison
Blade width comparison
Blade thickness comparison
John Deere LA155 Blade Notes
| Blade note | The John Deere LA155 blade listing captured here shows blade set part numbers M144176 and M144177 and length 17.12 in (435 mm), width 2.75 in (70 mm), thickness 0.188 in (5 mm), and center hole star / 0.75 in (19 mm). Confirm the number against the deck tag, old blade stamp or official parts diagram before ordering |
|---|---|
| Deck note | For the John Deere LA155, the captured deck information is blade count 2 blades. This helps separate 42-inch, 48-inch, 54-inch and larger deck blade setups |
| Blade type note | The blade type captured for the John Deere LA155 is high-lift, mulching, standard, and 3-in-1. High-lift is usually better for bagging, while mulching blades are for chopping clippings finer under a compatible deck |
| Fitment note | For the John Deere LA155, use the listed specs as a buying guide, but confirm against the operator manual, parts diagram or old blade before ordering |
John Deere LA155 Mower Blade FAQ
Why can the right-length John Deere LA155 blade still be wrong?
The blade length found is 17.12 in (435 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 LA155 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
Why does the John Deere LA155 blade center hole matter?
The captured center-hole detail is star / 0.75 in (19 mm). If the hole shape or size is wrong, the blade may not seat correctly on the spindle even if the length looks right
Which blade type should you use on the John Deere LA155?
The blade type captured is high-lift, mulching, standard, and 3-in-1. Use that against the captured fitment value 17.12 in (435 mm). High-lift helps bagging/discharge; mulching blades need the right mulching setup
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.
