The Kubota ZD21 deck belt part number found is 70000-05581. The deck belt length found is 120 in (3,048 mm). The drive belt part number found is K1253-1422.
Deck belt part #70000-05581
Deck belt sizelength 120 in (3,048 mm)
Drive belt part #K1253-1422
Deck size60 in deck
Kubota ZD21 Belt Size and Part Numbers
Mower deck belt part number
70000-05581
Mower deck belt length
120 in (3,048 mm)
Drive belt part number
K1253-1422
Deck size
60 in deck
Belt Size Comparison Chart
Belt length comparison
This model
120 in
Average
110 in
Low
75 in
High
155 in
Mower deck size comparison
This model
60 in
Average
60 in
Low
48 in
High
72 in
Kubota ZD21 Belt Notes
Mower deck belt note
The Kubota ZD21 deck belt listing shows part number 70000-05581 with length 120 in (3,048 mm). Use the listed value as a buying guide, not a blind substitute for the deck-specific parts diagram
Drive belt note
The Kubota ZD21 drive or transmission belt part number captured here is K1253-1422. This is separate from the mower deck belt
Deck size note
The captured mower deck size for the Kubota ZD21 is 60 in deck. Deck size matters because the same model family can use different belts with different decks
Fitment note
For the Kubota ZD21, use the listed specs as a buying guide, but confirm against the operator manual, parts diagram or belt label before spending money
Kubota ZD21 Belt Size FAQ
Why can the correct Kubota ZD21 deck belt still slip?
The deck belt length found is 120 in (3,048 mm). Even with the right length, a weak idler spring, worn pulley groove or wrong belt path can make it slip. The part number and routing matter together
How do you avoid mixing up the Kubota ZD21 deck and drive belts?
Use the belt position first: deck belt part number 70000-05581 and drive belt part number K1253-1422. A deck belt number does not automatically fit the drive system, even when an aftermarket listing makes the cross-reference look close
What is the fastest way to confirm the Kubota ZD21 deck belt?
Start with the captured 60 in deck deck and the deck belt value 120 in (3,048 mm). Then check the belt routing decal or parts diagram so you do not order a belt for the wrong deck
Is the captured Kubota ZD21 deck belt part number enough to buy from?
The captured deck belt number is 70000-05581. This number helps with OEM lookup, but the deck belt width was not fully captured here. Before buying aftermarket, confirm the exact deck or serial range
Official information note
Mistakes do happen. Belt specs can change by year, mower deck, pulley layout, serial range and regional parts catalog. Please check the operator manual, belt routing decal, old belt label and official kubotausa.com before ordering a replacement belt.
