The New Holland TC21 tractor primary air filter part number is 86555826. The inner safety filter is 86512887.
New Holland TC21 Air Filter Details
Primary air filter part number
86555826
Inner safety air filter part number
86512887
Outer air filter part number
87300189
Air filter dimensions
Length: 9.5 in | Outside diameter: 6.5 in | Inside diameter: 3 in
Air Filter Service Interval Guide
Air Filter Service Interval Guide
Dusty use
100 hrs
Average
250 hrs
Light use
500 hrs
Listed Filter Size Check
Length
9.5 in
Outside diameter
6.5 in
Inside diameter
3 in
These are practical inspection/replacement guide ranges for the compact tractor category. Dusty work can shorten the interval heavily, so use the restriction indicator and operator manual first.
New Holland TC21 Extra Air Filter Notes
Engine displacement
1 L | 61 cu in
Engine horsepower
21 hp | 15.7 kW
Primary filter note
For the New Holland TC21, the listed primary air filter part number is 86555826. 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 87300189.
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
Listed dimensions: Length: 9.5 in | Outside diameter: 6.5 in | Inside diameter: 3 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 9.5 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
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.
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 TC21 Air Filter FAQs
Is airflow likely to be sensitive on the New Holland TC21?
If the tractor is under load, a marginal or dirty element will matter more than it does at idle. Use the size/power combo as a reason to inspect before heavy dusty jobs.
Should I order one filter or a full New Holland TC21 air-filter set?
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 87300189 when you meant the safety filter, or 86512887 when you meant the outer filter.
What is the safest way to match a New Holland TC21 air filter?
Use 86555826 as the anchor number, then verify the old element and housing label. This is a straight numeric OEM-style number, and the setup looks like a primary, outer and inner safety element setup, so one loose search result is not enough. The size data points to a mid-size element, so compare the removed element against both length and outside diameter before fitting.
What do the New Holland TC21 air filter dimensions tell me?
The useful thing is the relationship between the three measurements: length checks housing depth, outside diameter checks the outer seal, and inside diameter checks the center opening. A filter can match two and still fail the third.
What part-number mistake should I avoid on a New Holland TC21?
Multiple numbers are useful only if each one is tied to the correct element position. Wrong element in the right brand is still wrong.
What does the outer-filter listing mean for the New Holland TC21?
This looks like a multi-element setup. Keep the outer/primary service element and the inner safety element separate when ordering, because mixing up 87300189 and 86512887 is the easy mistake.
When does the New Holland TC21 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 newholland.com website before ordering or installing an air filter.
