The New Holland TK4020 tractor primary air filter part number is 86555826. The inner safety filter is 82028151.
New Holland TK4020 Air Filter Details
Primary air filter part number
86555826
Inner safety air filter part number
82028151
Outer air filter part number
87037985
Air filter dimensions
Length: 10.8 in | Outside diameter: 4.1 in | Inside diameter: 2.3 in
Cross-reference part numbers
TK4020, 10-13/16, 4-1/8, 2-5/16
Air Filter Service Interval Guide
Air Filter Service Interval Guide
Dusty use
100 hrs
Average
300 hrs
Light use
600 hrs
Listed Filter Size Check
Length
10.8 in
Outside diameter
4.1 in
Inside diameter
2.3 in
These are practical inspection/replacement guide ranges for the utility tractor category. Dusty work can shorten the interval heavily, so use the restriction indicator and operator manual first.
New Holland TK4020 Extra Air Filter Notes
Engine model
FPT 3.2L
Engine displacement
3.2 L | 195.3 cu in
Engine horsepower
64.4 hp | 48 kW
Primary filter note
For the New Holland TK4020, 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 87037985.
Safety filter note
The listed inner safety air filter is 82028151. Do not remove the safety element for normal cleaning; replace it if dirty, damaged or oil-soaked.
Fitment note
Listed dimensions: Length: 10.8 in | Outside diameter: 4.1 in | Inside diameter: 2.3 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 10.8 in and normal outside diameter at 4.1 in. Use that as a fitment sanity check against the old filter.
Power range note
Use the power class to decide urgency. Higher airflow demand means less patience for questionable media, bad seals or packed pleats.
Engine airflow note
Displacement and horsepower together explain airflow demand better than either one alone, but the air-cleaner housing still proves fit.
Cross-reference note
Possible cross-reference numbers found for the New Holland TK4020: TK4020, 10-13/16, 4-1/8, 2-5/16. 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 TK4020 Air Filter FAQs
Which New Holland TK4020 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 87037985 when you meant the safety filter, or 82028151 when you meant the outer filter.
Why should I compare the old New Holland TK4020 filter before buying?
If the old filter is missing, use 86555826 plus the housing measurements as a two-step check. If either the seal or cover depth is wrong, do not run it.
Is airflow likely to be sensitive on the New Holland TK4020?
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 trust New Holland TK4020 air-filter dimensions or the part number?
The dimensions are useful only as a fitment screen. The final test is whether the element seats square, the cover closes normally and the seal lands where the old one did.
What is the biggest fitment trap with the New Holland TK4020 air filter?
The trap is assuming a long, narrow element is close enough because it looks right online. The seal face, end-cap depth and cover pressure have to match, otherwise dust can bypass the media.
Why does airflow matter on the New Holland TK4020 air filter?
Use the power class to decide urgency. Higher airflow demand means less patience for questionable media, bad seals or packed pleats.
Why does the full New Holland TK4020 air-filter number matter?
The primary number format is a straight numeric OEM-style number, while the page also has separate companion numbers. That is exactly where copy-paste ordering mistakes happen.
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.
