The New Holland Workmaster 105 tractor primary air filter part number is 86555826. The inner safety filter is 86512887.
New Holland Workmaster 105 Air Filter Details
Primary air filter part number
86555826
Inner safety air filter part number
86512887
Outer air filter part number
87408704
Air filter dimensions
Length: 10.2 in | Outside diameter: 5.8 in | Inside diameter: 2.2 in
Air Filter Service Interval Guide
Air Filter Service Interval Guide
Dusty use
100 hrs
Average
400 hrs
Light use
800 hrs
Listed Filter Size Check
Length
10.2 in
Outside diameter
5.8 in
Inside diameter
2.2 in
These are practical inspection/replacement guide ranges for the row-crop tractor category. Dusty work can shorten the interval heavily, so use the restriction indicator and operator manual first.
New Holland Workmaster 105 Extra Air Filter Notes
Engine model
FPT 3.4L
Engine displacement
3.4 L | 207.5 cu in
Engine horsepower
112 hp | 83.5 kW
Primary filter note
For the New Holland Workmaster 105, 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 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
Listed dimensions: Length: 10.2 in | Outside diameter: 5.8 in | Inside diameter: 2.2 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 10.2 in and normal outside diameter at 5.8 in. Use that as a fitment sanity check against the old filter.
Power range note
The horsepower and filter-size combo says this is not just a catalog lookup. If the tractor works in dust, restriction checks should happen earlier than the generic chart.
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 Workmaster 105 Air Filter FAQs
Does the New Holland Workmaster 105 filter size look right for its horsepower?
The useful read is not the raw size by itself. Compared with the 112 hp engine class, the filter size looks reasonable for the power class, but dusty work can still load it quickly. Use that to decide how cautious to be in dusty work.
Which New Holland Workmaster 105 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.
How should I verify the New Holland Workmaster 105 air filter before fitting it?
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.
Can I match a New Holland Workmaster 105 air filter by size?
A mid-size element can still have different end caps across brands. Use size to narrow the search, then use the part number and seal style to make the decision.
Why are there multiple air filter numbers for the New Holland Workmaster 105?
The outer filter is the dirt-catcher; the inner filter is the backup. Service them with different expectations instead of replacing both out of habit.
Can a similar New Holland Workmaster 105 air-filter number still be wrong?
The main number 86555826 should be treated as the control number. The other numbers need their own fitment checks, not blind substitution.
Can the New Holland Workmaster 105 lose power from a dirty air filter?
The horsepower and filter-size combo says this is not just a catalog lookup. If the tractor works in dust, restriction checks should happen earlier than the generic chart.
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.
