The Case IH Optum 270 tractor primary air filter part number is 401270R1. The inner safety filter is 401270R1.
Case IH Optum 270 Air Filter Details
Primary air filter part number
401270R1
Inner safety air filter part number
401270R1
Outer air filter part number
S109470
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 Optum 270 Extra Air Filter Notes
Engine model
FPT 6.7L
Engine displacement
6.7 L | 408.9 cu in
Engine horsepower
288 hp
Primary filter note
For the Case IH Optum 270, the listed primary air filter part number is 401270R1. 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 S109470.
Safety filter note
The listed inner safety air filter is 401270R1. 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
Displacement and horsepower together explain airflow demand better than either one alone, but the air-cleaner housing still proves fit.
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 Optum 270 Air Filter FAQs
What makes the Case IH Optum 270 air-filter number risky to order blindly?
Because this listing shows a primary, outer and inner safety element setup, the risk is ordering one correct number and one wrong companion element. Keep 401270R1 as the main reference, then confirm the other elements separately.
Which Case IH Optum 270 air-filter parts should be changed together?
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 S109470 when you meant the safety filter, or 401270R1 when you meant the outer filter.
Why is the exact Case IH Optum 270 filter number important?
The primary number format is a mixed letter-and-number part number, while the page also has separate companion numbers. That is exactly where copy-paste ordering mistakes happen.
Should I buy separate outer and primary filters for a Case IH Optum 270?
The presence of both outer and inner numbers means you should order carefully. A kit can be convenient, but only if it contains the correct service element and safety element.
Why not stretch a dirty Case IH Optum 270 air filter under load?
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.
Can displacement catch wrong Case IH Optum 270 filter listings?
Displacement and horsepower together explain airflow demand better than either one alone, but the air-cleaner housing still proves fit.
What is the point of the Case IH Optum 270 inner safety air filter?
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 401270R1.
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.
