The Case IH Magnum 280 tractor primary air filter part number is 381423R92. The inner safety filter is 87409407.
Case IH Magnum 280 Air Filter Details
Primary air filter part number
381423R92
Inner safety air filter part number
87409407
Outer air filter part number
84191182
Air Filter Service Interval Guide
Air Filter Service Interval Guide
Dusty use
100 hrs
Average
500 hrs
Light use
1,000 hrs
These are practical inspection/replacement guide ranges for the large ag tractor category. Dusty work can shorten the interval heavily, so use the restriction indicator and operator manual first.
Case IH Magnum 280 Extra Air Filter Notes
Engine model
FPT 8.7L
Engine displacement
8.7 L | 530.9 cu in
Engine horsepower
280 hp | 208.8 kW
Primary filter note
For the Case IH Magnum 280, 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 listed outer air filter part number is 84191182.
Safety filter note
The listed inner safety air filter is 87409407. Do not remove the safety element for normal cleaning; replace it if dirty, damaged or oil-soaked.
Fitment note
Check the old filter, air cleaner housing label and parts book before ordering if the tractor has had an engine or intake-housing change.
Power range note
This is a higher-airflow class, so restriction matters fast. If it is working in dust, inspect before the 500-hour planning mark instead of waiting for visible power loss.
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 Magnum 280 Air Filter FAQs
Should I order one filter or a full Case IH Magnum 280 air-filter set?
For a full parts check, separate the service element from the safety element: buy the outer/primary service element first, then buy the inner safety element only if it is dirty, damaged or due. Do not accidentally order 84191182 when you meant the safety filter, or 87409407 when you meant the outer filter.
Why should I compare the old Case IH Magnum 280 filter before buying?
The safest match is not just the printed number. Use 381423R92, then check whether the element seats fully without forcing the cover.
When does the Case IH Magnum 280 air filter become a performance problem?
This is a higher-airflow class, so restriction matters fast. If it is working in dust, inspect before the 500-hour planning mark instead of waiting for visible power loss.
How do I avoid mixing up Case IH Magnum 280 outer and safety filters?
This is not a one-number job. The outer and inner elements have different jobs, so compare both old parts before buying a kit.
Why does the full Case IH Magnum 280 air-filter number matter?
Multiple numbers are useful only if each one is tied to the correct element position. Wrong element in the right brand is still wrong.
Does the Case IH Magnum 280 engine setup affect air filter fitment?
This is a large-displacement / large ag type setup, so airflow is not just a trivia spec. A bad seal or restricted element can show up as smoke, heat or weak pull.
When should the Case IH Magnum 280 safety element be replaced?
The inner element is there for the mistake moment: a torn outer filter, bad seal or dusty service. Keep it clean and seated while working around 381423R92.
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.
