The Case IH Farmall DX55 tractor primary air filter part number is 381423R92.
Case IH Farmall DX55 Air Filter Details
Primary air filter part number
381423R92
Outer air filter part number
Same as primary air filter
Air filter dimensions
Outside diameter: 9.9 in | Inside diameter: 6 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
Outside diameter
9.9 in
Inside diameter
6 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 DX55 Extra Air Filter Notes
Engine model
Shibaura 2.2L
Engine displacement
2.2 L | 134.3 cu in
Engine horsepower
55 hp | 41 kW
Primary filter note
For the Case IH Farmall DX55, 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 DX55 appears to be the same listed item as the primary filter.
Safety filter note
If your air cleaner has an inner safety element, leave it in place while servicing the outer filter so dirt cannot fall into the intake.
Fitment note
Listed dimensions: Outside diameter: 9.9 in | Inside diameter: 6 in. Use dimensions as a second check, not as the only buying method.
Filter size note
The listed dimensions point to a large outside diameter at 9.9 in. Use that as a fitment sanity check against the old filter.
Power range note
This sits in the utility range. The 300-hour guide is useful for planning, but dusty work should shorten the inspection cycle.
Engine airflow note
A similar horsepower rating does not guarantee the same filter if displacement or engine family changes. Use the engine data as a sanity check only.
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 DX55 Air Filter FAQs
How do I avoid mixing up the Case IH Farmall DX55 air-filter elements?
With only a primary number listed, the smart move is to open the housing before ordering multiples. Some tractors have a hidden safety element that search snippets do not show clearly.
What is the most reliable way to confirm a Case IH Farmall DX55 air filter?
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 DX55 air-filter measurement matters most?
One dimension is better than none, but it does not tell you the full canister fit. Check the removed element before installing.
Is the Case IH Farmall DX55 outer filter the same as the primary filter?
Primary versus outer is wording more than a separate part in this data. The safety element is the one that needs separate treatment.
Why not stretch a dirty Case IH Farmall DX55 air filter under load?
This sits in the utility range. The 300-hour guide is useful for planning, but dusty work should shorten the inspection cycle.
What does the Case IH Farmall DX55 air-filter part-number pattern tell me?
The primary number looks like a mixed letter-and-number part number. That does not make it automatically correct, but it helps you spot obvious nonsense numbers in search results.
What is the biggest fitment trap with the Case IH Farmall DX55 air filter?
The trap is assuming a large outside-diameter element is close enough because it looks right online. The seal face, end-cap depth and cover pressure have to match, otherwise dust can bypass the media.
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.
