The Case IH Farmall 85U tractor primary air filter part number is 1930785. The inner safety filter is 381423R92.
Case IH Farmall 85U Air Filter Details
Primary air filter part number
1930785
Inner safety air filter part number
381423R92
Outer air filter part number
381423R92
Air filter dimensions
Length: 12 in | Outside diameter: 6.5 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
12 in
Outside diameter
6.5 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 85U Extra Air Filter Notes
Engine model
FPT 4.5L
Engine displacement
4.5 L | 274.6 cu in
Engine horsepower
85 hp | 63.4 kW
Primary filter note
For the Case IH Farmall 85U, the listed primary air filter part number is 1930785. 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 381423R92.
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: 12 in | Outside diameter: 6.5 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 12 in and normal outside diameter at 6.5 in. Use that as a fitment sanity check against the old filter.
Power range note
A dirty filter on this setup can show up as reduced pull, black smoke or higher temperature. That is more useful than staring at the hour meter.
Engine airflow note
The displacement helps identify the engine family; horsepower tells you how hard it breathes under load. The element still has to match the canister.
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 85U Air Filter FAQs
Can the Case IH Farmall 85U air filter become a restriction under load?
The combo is a practical warning system. If the element is packed, damaged or not sealing, the engine can lose airflow long before the filter looks catastrophic.
How do I avoid mixing up the Case IH Farmall 85U air-filter elements?
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 381423R92 when you meant the safety filter, or 381423R92 when you meant the outer filter.
How should I verify the Case IH Farmall 85U air filter before fitting it?
Do not buy from the title alone. Match 1930785 against the removed filter, then check gasket shape, end-cap depth and cover fit before starting the tractor.
How should I use the Case IH Farmall 85U filter dimensions?
For this shape, do not eyeball it from a product photo. A close-looking element can be wrong if the seal sits at a different depth.
Can a similar Case IH Farmall 85U air-filter number still be wrong?
The main number 1930785 should be treated as the control number. The other numbers need their own fitment checks, not blind substitution.
How do the Case IH Farmall 85U outer and primary filters differ?
This is not a one-number job. The outer and inner elements have different jobs, so compare both old parts before buying a kit.
When does the Case IH Farmall 85U air filter become a performance problem?
A dirty filter on this setup can show up as reduced pull, black smoke or higher temperature. That is more useful than staring at the hour meter.
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.
