The Kubota ZD18 deck belt part number found is K5645-34710. The drive belt part number found is 77700-05581. The drive belt size found is 95.5 in (2,426 mm) long by 1.25 in (32 mm) wide.
Deck belt part #K5645-34710
Drive belt part #77700-05581
Drive belt sizelength 95.5 in (2,426 mm) and width 1.25 in (32 mm)
Deck size60 in deck
Kubota ZD18 Belt Size and Part Numbers
Mower deck belt part number
K5645-34710
Drive belt part number
77700-05581
Drive belt length
95.5 in (2,426 mm)
Drive belt width
1.25 in (32 mm)
Deck size
60 in deck
Belt Size Comparison Chart
Belt length comparison
This model
96 in
Average
110 in
Low
75 in
High
155 in
Belt width comparison
This model
1.25 in
Average
0.75 in
Low
0.5 in
High
1.25 in
Mower deck size comparison
This model
60 in
Average
60 in
Low
48 in
High
72 in
Kubota ZD18 Belt Notes
Mower deck belt note
The Kubota ZD18 deck belt part number captured here is K5645-34710. Use the listed value as a buying guide, not a blind substitute for the deck-specific parts diagram
Drive belt note
The Kubota ZD18 drive or transmission belt listing shows part number 77700-05581, length 95.5 in (2,426 mm) and width 1.25 in (32 mm). This is separate from the mower deck belt
Deck size note
The captured mower deck size for the Kubota ZD18 is 60 in deck. Deck size matters because the same model family can use different belts with different decks
Fitment note
The blunt rule with the Kubota ZD18: part number beats guesswork. If the belt is off by even a small amount, it can slip, squeal, jump pulleys or wear fast
Kubota ZD18 Belt Size FAQ
What should you check when fitting a 95.5 in (2,426 mm) drive belt on the Kubota ZD18?
The drive belt length found is 95.5 in (2,426 mm). This is a longer mower belt run, so twist, idler alignment and the belt keeper positions matter. A belt can be the right length and still fail if it is routed wrong. Also check the idler spring and pulley grooves because drive belts can slip under load even when they look fine at idle
Why does 1.25 in (32 mm) belt width matter on the Kubota ZD18?
The captured drive belt width is 1.25 in (32 mm). Pulley grooves are cut for a matching belt profile. Wrong width can cause squeal, heat, poor blade speed or fast belt wear
Why are there separate belt part numbers for the Kubota ZD18?
The captured values separate the belt jobs: deck belt part number K5645-34710 and drive belt part number 77700-05581. Treat each number as position-specific and confirm it against the parts diagram before ordering
Should you order the Kubota ZD18 belt by tractor model or deck size?
Use both. The deck size captured is 60 in deck, and the captured deck belt value is K5645-34710. Model name alone is risky when multiple deck sizes or serial ranges exist
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.
