The Case IH STX480QT tractor primary air filter part number is 8605139. The inner safety filter is A171255.
Case IH STX480QT Air Filter Details
Primary air filter part number
8605139
Inner safety air filter part number
A171255
Outer air filter part number
B8E16496
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 STX480QT Extra Air Filter Notes
Engine model
Cummins 14.9L
Engine displacement
14.9 L | 909.3 cu in
Engine horsepower
480 hp | 357.9 kW
Primary filter note
For the Case IH STX480QT, the listed primary air filter part number is 8605139. 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 B8E16496.
Safety filter note
The listed inner safety air filter is A171255. 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
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 STX480QT Air Filter FAQs
How do I avoid mixing up the Case IH STX480QT 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 B8E16496 when you meant the safety filter, or A171255 when you meant the outer filter.
How do I avoid buying the wrong Case IH STX480QT air filter?
If the old filter is missing, use 8605139 plus the housing measurements as a two-step check. If either the seal or cover depth is wrong, do not run it.
Why does the Case IH STX480QT horsepower class matter for filters?
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 can part-number style help check a Case IH STX480QT filter?
The part-number pattern can help spot junk listings. If a seller’s number looks nothing like the catalog style, verify it against a real drawing.
What does the outer-filter listing mean for the Case IH STX480QT?
Multiple numbers usually means a staged air cleaner. Replace the loaded outer element first, then inspect the safety element without exposing the clean intake to dust.
Can a Case IH STX480QT engine swap change the air filter?
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.
Is the Case IH STX480QT inner filter a normal service part?
On a a primary, outer and inner safety element setup, the inner element is the last barrier. If you remove it casually in a dusty shed, you defeat the reason it exists.
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.
