The Case IH Farmall 100N tractor primary air filter part number is 381423R92. The inner safety filter is 381423R92.
Case IH Farmall 100N Air Filter Details
Primary air filter part number
381423R92
Inner safety air filter part number
381423R92
Outer air filter part number
Same as primary air filter
Air filter dimensions
Length: 10.2 in | Outside diameter: 5.8 in | Inside diameter: 2.2 in
Air Filter Service Interval Guide
Air Filter Service Interval Guide
Dusty use
100 hrs
Average
300 hrs
Light use
600 hrs
Listed Filter Size Check
Length
10.2 in
Outside diameter
5.8 in
Inside diameter
2.2 in
These are practical inspection/replacement guide ranges for the utility tractor category. Dusty work can shorten the interval heavily, so use the restriction indicator and operator manual first.
Case IH Farmall 100N Extra Air Filter Notes
Engine displacement
3.4 L | 207 cu in
Engine horsepower
98 hp | 73.1 kW
Primary filter note
For the Case IH Farmall 100N, the listed primary air filter part number is 381423R92. Match the number before buying because air cleaner setups can vary by engine, serial range and market.
Outer filter note
The outer air filter for the Case IH Farmall 100N appears to be the same listed item as the primary filter.
Safety filter note
The listed inner safety air filter is 381423R92. Do not remove the safety element for normal cleaning; replace it if dirty, damaged or oil-soaked.
Fitment note
Listed dimensions: Length: 10.2 in | Outside diameter: 5.8 in | Inside diameter: 2.2 in. Use dimensions as a second check, not as the only buying method.
Filter size note
The listed dimensions point to a mid-size element length at 10.2 in and normal outside diameter at 5.8 in. Use that as a fitment sanity check against the old filter.
Power range note
The horsepower and filter-size combo says this is not just a catalog lookup. If the tractor works in dust, restriction checks should happen earlier than the generic chart.
Engine airflow note
Displacement and horsepower together explain airflow demand better than either one alone, but the air-cleaner housing still proves fit.
Service note
Clean loose dust from the air cleaner housing before pulling the filter. Never run the tractor with the filter removed, even for a quick test.
Case IH Farmall 100N Air Filter FAQs
What does the Case IH Farmall 100N horsepower and filter size combo tell me?
Horsepower tells you airflow demand; length and outside diameter tell you rough element size. Together they say whether restriction is a service concern or mostly a fitment check.
What should I buy for a full Case IH Farmall 100N air-filter service?
For normal service, the primary/outer element is the one that does the dirty work. The inner safety element is backup protection, so replace it less often and keep it seated while cleaning the housing.
How should I verify the Case IH Farmall 100N air filter before fitting it?
Do not buy from the title alone. Match 381423R92 against the removed filter, then check gasket shape, end-cap depth and cover fit before starting the tractor.
Which Case IH Farmall 100N air-filter measurement matters most?
A mid-size element can still have different end caps across brands. Use size to narrow the search, then use the part number and seal style to make the decision.
Can a similar Case IH Farmall 100N air-filter number still be wrong?
Part numbers are not keywords to approximate. One missing suffix can send you to a related filter that does not seal correctly.
Is the Case IH Farmall 100N outer filter the same as the primary filter?
Do not read the primary and outer rows as two separate filters here. They point to the same service element, with the safety element handled separately.
What symptoms point to air restriction on a Case IH Farmall 100N?
The horsepower and filter-size combo says this is not just a catalog lookup. If the tractor works in dust, restriction checks should happen earlier than the generic chart.
Official information note
Mistakes do happen. Air filter specs can change by year, engine, serial range, market and air cleaner housing. Check the old filter, operator manual, parts book and official caseih.com website before ordering or installing an air filter.
