The New Holland T9.670 tractor primary air filter part number is 44178. The inner safety filter is 86512887.
New Holland T9.670 Air Filter Details
Primary air filter part number
44178
Inner safety air filter part number
86512887
Outer air filter part number
87408704
Cross-reference part numbers
CF37001, 87373279
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.
New Holland T9.670 Extra Air Filter Notes
Engine model
FPT 12.9L
Engine displacement
12.9 L | 787.2 cu in
Engine horsepower
608 hp | 453.4 kW
Primary filter note
For the New Holland T9.670, the listed primary air filter part number is 44178. 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 87408704.
Safety filter note
The listed inner safety air filter is 86512887. 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.
Cross-reference note
Possible cross-reference numbers found for the New Holland T9.670: CF37001, 87373279. Treat these as secondary checks after the primary filter number.
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.
New Holland T9.670 Air Filter FAQs
Which New Holland T9.670 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 87408704 when you meant the safety filter, or 86512887 when you meant the outer filter.
What makes the New Holland T9.670 air-filter number risky to order blindly?
The safest match is not just the printed number. Use 44178, then check whether the element seats fully without forcing the cover.
How do I avoid mixing up New Holland T9.670 outer and safety filters?
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 New Holland T9.670 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 is the exact New Holland T9.670 filter number important?
The main number 44178 should be treated as the control number. The other numbers need their own fitment checks, not blind substitution.
When should I reject a New Holland T9.670 cross-reference filter?
Cross-references are usually safe when the dimensions, end caps and seals match. They are not safe when the listing only says it fits your tractor without proof.
Should I blow out the New Holland T9.670 inner safety element?
Replace the safety element when it is contaminated, damaged, wet or due by the book. Blowing it out as a normal habit is a dumb way to push dirt toward the engine.
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 newholland.com website before ordering or installing an air filter.
