The Kubota Z421 mower blade part numbers found are K5613-34350 and K5613-34340. The blade set part numbers found are K5613-34350 and K5613-34340. The blade measurement captured is thickness 0.25 in (6 mm). The deck uses 3 blades.
Blade part #K5613-34350 and K5613-34340
Blade set part #K5613-34350 and K5613-34340
Blade sizethickness 0.25 in (6 mm)
Blade count3 blades
Kubota Z421 Mower Blade Size and Part Numbers
Mower blade part number
K5613-34350 and K5613-34340
Mower blade set part number
K5613-34350 and K5613-34340
Blade thickness
0.25 in (6 mm)
Number of blades
3 blades
Blade type
high-lift and mulching
Blade Size Comparison Chart
Blade thickness comparison
This model
0.25 in
Average
0.25 in
Low
0.188 in
High
0.312 in
Kubota Z421 Blade Notes
Blade note
The Kubota Z421 blade listing captured here shows single blade part numbers K5613-34350 and K5613-34340, blade set part numbers K5613-34350 and K5613-34340, and thickness 0.25 in (6 mm). Confirm the number against the deck tag, old blade stamp or official parts diagram before ordering
Deck note
For the Kubota Z421, the captured deck information is blade count 3 blades. This helps separate 42-inch, 48-inch, 54-inch and larger deck blade setups
Blade type note
The blade type captured for the Kubota Z421 is high-lift and mulching. High-lift is usually better for bagging, while mulching blades are for chopping clippings finer under a compatible deck
Fitment note
Before ordering Kubota Z421 blades, compare the old blade stamp, center-hole shape, blade length and deck size. Close-looking blades can still be wrong
Kubota Z421 Mower Blade FAQ
Which blade type should you use on the Kubota Z421?
The blade type captured is high-lift and mulching. Use that against the captured fitment value K5613-34350 and K5613-34340. High-lift helps bagging/discharge; mulching blades need the right mulching setup
Is the captured Kubota Z421 blade part numbers enough to buy from?
The captured blade part numbers is K5613-34350 and K5613-34340. 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 kubotausa.com before ordering replacement blades.
