The Kubota KB21X tractor primary engine air filter part number found is 59700-26112. Filter dimensions found include Height: 9.5 in / 241 mm; Outer diameter: 6.5 in / 165 mm; Inner diameter: 3 in / 76 mm. Service guidance is to check the air filter every 100 hours.
Primary air filter59700-26112
Filter height9.5 in / 241 mm
Engine power20.7 hp
Service intervalCheck every 100 hours
Kubota KB21X Air Filter Specs
Primary air filter part number
59700-26112
Secondary / safety air filter
32721-58242-FOR-ITS-SECON-AND-32721-58242
Air filter size
Height: 9.5 in / 241 mm; Outer diameter: 6.5 in / 165 mm; Inner diameter: 3 in / 76 mm
Filter height
9.5 in / 241 mm
Outer diameter
6.5 in / 165 mm
Inner diameter
3 in / 76 mm
Replacement interval
Check every 100 hours
Number of air filter elements
2 elements (primary, secondary)
Engine horsepower
20.7 hp
Engine displacement
67.1 cu in (1.1 L)
Kubota KB21X Air Filter Charts
Air filter dimensions
Height
9.5 in
Outer diameter
6.5 in
Inner diameter
3 in
Engine horsepower
This model
20.7 hp
Average
32 hp
Low
15 hp
High
60 hp
Engine displacement
This model
67.1 cu in
Average
95 cu in
Low
45 cu in
High
180 cu in
Air filter service interval
This model
100 hr
Average
100 hr
Low
50 hr
High
200 hr
Kubota KB21X Air Filter FAQ
What air filter does the Kubota KB21X use?
The primary engine air filter part number found for the Kubota KB21X is 59700-26112.
What size is the Kubota KB21X air filter?
The air filter dimensions found for the Kubota KB21X are Height: 9.5 in / 241 mm; Outer diameter: 6.5 in / 165 mm; Inner diameter: 3 in / 76 mm. Use these dimensions as a fit check, but treat the part number as the main match.
How often should the Kubota KB21X air filter be checked or replaced?
The service guidance found for the Kubota KB21X is to check the air filter every 100 hours. That matches the reference average of 100 hours used for this class.
How many air filter elements are listed for the Kubota KB21X?
This page lists 2 elements (primary, secondary). That means the safety element should be treated separately from the outer primary air filter.
Why include engine specs on a Kubota KB21X air filter page?
For the Kubota KB21X, the engine specs found are 20.7 hp, 67.1 cu in (1.1 L). This is useful context when comparing similar models, but not a substitute for checking the filter number 59700-26112.
Should I order the Kubota KB21X air filter by size or part number?
Buy by 59700-26112 first for the Kubota KB21X. The dimensions value is useful for checking an aftermarket listing before ordering.
What should I confirm before buying a Kubota KB21X air filter?
For the Kubota KB21X, confirm 59700-26112 against the Kubota parts source and use the listed dimensions of Height: 9.5 in / 241 mm; Outer diameter: 6.5 in / 165 mm; Inner diameter: 3 in / 76 mm as a physical check.
Official information note
Air filter fit can change by engine, serial number, production year and air-cleaner housing. Check the operator manual, parts manual and official kubotausa.com website before buying or fitting an air filter.
