The Case IH Magnum 340 tractor primary air filter part number is 381423R92. The inner safety filter is 4427570C1.
Case IH Magnum 340 Air Filter Details
Primary air filter part number
381423R92
Inner safety air filter part number
4427570C1
Outer air filter part number
Same as primary air filter
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 340 Extra Air Filter Notes
Engine model
FPT 8.7L
Engine displacement
8.7 L | 530.9 cu in
Engine horsepower
340 hp | 253.5 kW
Primary filter note
For the Case IH Magnum 340, 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 Magnum 340 appears to be the same listed item as the primary filter.
Safety filter note
The listed inner safety air filter is 4427570C1. 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 340 Air Filter FAQs
Should I order one filter or a full Case IH Magnum 340 air-filter set?
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.
Why should I compare the old Case IH Magnum 340 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. The outer listing matching the primary means you probably do not need to buy two different outer elements.
How do I avoid mixing up Case IH Magnum 340 outer and safety filters?
In this listing, the outer and primary filter appear to be the same service element. That means the main outer element is the one you replace first while the inner safety element stays protected.
When does the Case IH Magnum 340 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.
Why does the full Case IH Magnum 340 air-filter number matter?
If a listing shows a shortened version of 381423R92, be suspicious. Air filters are fitment parts, not close-enough parts.
Does the Case IH Magnum 340 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.
What does Case IH Magnum 340 displacement say about air-filter fit?
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.
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.
