The Kubota B1121 tractor primary engine air filter part number found is 11210. Cross-reference filters include WIX WA10428; Baldwin PA2020; Donaldson P181020. Service guidance is to check the air filter every 100 hours.
Primary air filter11210
Cross-referenceWIX WA10428
Engine power21.6 hp
Service intervalCheck every 100 hours
Kubota B1121 Air Filter Specs
Primary air filter part number
11210
Secondary / safety air filter
55231-26150
Pre-filter
16881-11670
Cross-reference filters
WIX WA10428; Baldwin PA2020; Donaldson P181020
Replacement interval
Check every 100 hours
Number of air filter elements
3 elements (primary, secondary, pre-filter)
Engine horsepower
21.6 hp
Engine displacement
67.1 cu in (1.1 L)
Kubota B1121 Air Filter Charts
Engine horsepower
This model
21.6 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 B1121 Air Filter FAQ
What air filter does the Kubota B1121 use?
The primary engine air filter part number found for the Kubota B1121 is 11210.
What air filter cross-references fit the Kubota B1121?
Cross-reference filters found for the Kubota B1121 include WIX WA10428; Baldwin PA2020; Donaldson P181020.
Can I use an aftermarket air filter on the Kubota B1121?
The Kubota B1121 has 3 cross-reference filters listed, starting with WIX WA10428. Use them as aftermarket leads, not as a replacement for checking the original part number 11210.
How often should the Kubota B1121 air filter be checked or replaced?
The service guidance found for the Kubota B1121 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 B1121?
This page lists a primary filter, a safety filter and a pre-filter: 3 elements (primary, secondary, pre-filter). Replace each only with the matching part number for that position.
Why include engine specs on a Kubota B1121 air filter page?
The engine data kept for the Kubota B1121 is 21.6 hp, 67.1 cu in (1.1 L). Use it as supporting context only; the actual filter match is still driven by the air-cleaner housing and part number 11210.
Should I order the Kubota B1121 air filter by size or part number?
Start with 11210 when checking fitment for the Kubota B1121. Cross-reference filters can save time, but should still match the housing and engine fitted to your machine.
What should I confirm before buying a Kubota B1121 air filter?
For the Kubota B1121, confirm 11210 against the parts manual, then use the cross-reference list only after the OEM number matches.
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.
