The Kubota STW40 tractor primary engine air filter part number found is TA040-93230. Cross-reference filters include WIX 46619; Baldwin RS3992; Donaldson P822858; FRAM CA10262; more listed below. Service guidance is to check the air filter every 100 hours.
Primary air filterTA040-93230
Cross-referenceWIX 46619
Engine power38.5 hp
Service intervalCheck every 100 hours
Kubota STW40 Air Filter Specs
Primary air filter part number
TA040-93230
Cross-reference filters
WIX 46619; Baldwin RS3992; Donaldson P822858; FRAM CA10262; Stens 341-046
Replacement interval
Check every 100 hours
Number of air filter elements
1 element (primary)
Engine horsepower
38.5 hp
Engine displacement
109.8 cu in (1.8 L)
Kubota STW40 Air Filter Charts
Engine horsepower
This model
38.5 hp
Average
32 hp
Low
15 hp
High
60 hp
Engine displacement
This model
109.8 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 STW40 Air Filter FAQ
What air filter does the Kubota STW40 use?
The primary engine air filter part number found for the Kubota STW40 is TA040-93230.
What air filter cross-references fit the Kubota STW40?
Cross-reference filters found for the Kubota STW40 include WIX 46619; Baldwin RS3992; Donaldson P822858; FRAM CA10262; Stens 341-046.
Can I use an aftermarket air filter on the Kubota STW40?
The Kubota STW40 has 5 cross-reference filters listed, starting with WIX 46619. Use them as aftermarket leads, not as a replacement for checking the original part number TA040-93230.
How often should the Kubota STW40 air filter be checked or replaced?
The service guidance found for the Kubota STW40 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 STW40?
This page confirms 1 element (primary). No separate safety or pre-filter part number was found for this model, so inspect the actual air-cleaner housing before assuming it uses only one piece.
Why include engine specs on a Kubota STW40 air filter page?
Engine specs found for the Kubota STW40 include 38.5 hp, 109.8 cu in (1.8 L). Those specs help identify the tractor class, but the air filter should still be matched by part number TA040-93230.
Should I order the Kubota STW40 air filter by size or part number?
For the Kubota STW40, use TA040-93230 as the main part number and treat the cross-reference list as aftermarket buying leads.
What should I confirm before buying a Kubota STW40 air filter?
For the Kubota STW40, confirm TA040-93230 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.
