The Case IH Farmall 120CL tractor primary air filter part number is 381423R92. The inner safety filter is 381423R92.
Case IH Farmall 120CL 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
Outside diameter: 9.9 in | Inside diameter: 6 in | Height: 16.4 in
Air Filter Service Interval Guide
Air Filter Service Interval Guide
Dusty use
100 hrs
Average
400 hrs
Light use
800 hrs
Listed Filter Size Check
Height
16.4 in
Outside diameter
9.9 in
Inside diameter
6 in
These are practical inspection/replacement guide ranges for the row-crop tractor category. Dusty work can shorten the interval heavily, so use the restriction indicator and operator manual first.
Case IH Farmall 120CL Extra Air Filter Notes
Engine model
FPT 3.4L
Engine displacement
3.4 L | 207.5 cu in
Engine horsepower
119 hp
Primary filter note
For the Case IH Farmall 120CL, 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 120CL 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: Outside diameter: 9.9 in | Inside diameter: 6 in | Height: 16.4 in. Use dimensions as a second check, not as the only buying method.
Filter size note
The listed dimensions point to a long element length at 16.4 in and large outside diameter at 9.9 in. Use that as a fitment sanity check against the old filter.
Power range note
With a 119 hp engine class, the listed element size is generous for the power class, so fit/seal checks matter more than chasing a bigger filter. Watch for weak pull, smoke or heat under load before waiting for the full 400-hour guide.
Engine airflow note
If a cross-reference is for a different displacement family, verify it hard before buying. Similar model names can hide different intake setups.
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 120CL Air Filter FAQs
Does the Case IH Farmall 120CL filter size look right for its horsepower?
The useful read is not the raw size by itself. Compared with the 119 hp engine class, the listed element size is generous for the power class, so fit/seal checks matter more than chasing a bigger filter. Use that to decide how cautious to be in dusty work.
What would make a Case IH Farmall 120CL air filter cross-listing suspicious?
Because this listing shows a primary/outer service element plus an inner safety element, the risk is ordering one correct number and one wrong companion element. Keep 381423R92 as the main reference, then confirm the other elements separately.
What should I buy for a full Case IH Farmall 120CL 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 use the Case IH Farmall 120CL filter dimensions?
Length, OD and ID together are better than one size alone. The trap is buying a filter that fits into the canister but does not seal correctly at the ends.
What does the outer-filter listing mean for the Case IH Farmall 120CL?
The outer listing matching the primary is actually useful: it tells you not to chase a second outer number unless the old housing says otherwise.
How should I read the Case IH Farmall 120CL air-filter number?
If a listing shows a shortened version of 381423R92, be suspicious. Air filters are fitment parts, not close-enough parts.
Why does the Case IH Farmall 120CL horsepower class matter for filters?
With a 119 hp engine class, the listed element size is generous for the power class, so fit/seal checks matter more than chasing a bigger filter. Watch for weak pull, smoke or heat under load before waiting for the full 400-hour guide.
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.
