The Massey Ferguson 145 tractor primary air filter part number is 3703703M91. The inner safety filter is 7068311M91.
Massey Ferguson 145 Air Filter Details
Primary air filter part number
3703703M91
Inner safety air filter part number
7068311M91
Air filter dimensions
Outside diameter: 4.5 in | Inside diameter: 0.4 in | Height: 10.8 in
Cross-reference part numbers
1/2, 3/4, 1026131, 1040178M91
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
Height
10.8 in
Outside diameter
4.5 in
Inside diameter
0.4 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.
Massey Ferguson 145 Extra Air Filter Notes
Engine displacement
4.4 L | 268.5 cu in
Engine horsepower
105 hp
Primary filter note
For the Massey Ferguson 145, the listed primary air filter part number is 3703703M91. Match the number before buying because air cleaner setups can vary by engine, serial range and market.
Safety filter note
The listed inner safety air filter is 7068311M91. Do not remove the safety element for normal cleaning; replace it if dirty, damaged or oil-soaked.
Fitment note
Listed dimensions: Outside diameter: 4.5 in | Inside diameter: 0.4 in | Height: 10.8 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 4.5 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
Engine size is useful context for service urgency, not a license to ignore the part number. The canister and seal decide fitment.
Cross-reference note
Possible cross-reference numbers found for the Massey Ferguson 145: 1/2, 3/4, 1026131, 1040178M91. 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.
Massey Ferguson 145 Air Filter FAQs
Why compare Massey Ferguson 145 horsepower with filter dimensions?
Comparing power and element size helps catch bad cross-references. A tiny replacement for a harder-working engine should make you suspicious before installing it.
What should I buy for a full Massey Ferguson 145 air-filter service?
For a normal service, plan on the primary element first and inspect the safety element separately. Replacing both every single time is usually wasted money unless the housing was contaminated.
What would make a Massey Ferguson 145 air filter cross-listing suspicious?
Do not buy from the title alone. Match 3703703M91 against the removed filter, then check gasket shape, end-cap depth and cover fit before starting the tractor.
Should I trust Massey Ferguson 145 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.
Would I be strict with the Massey Ferguson 145 air filter condition?
Yes. The power-to-filter-size relationship makes restriction and seal condition worth taking seriously. Replace a questionable element before heavy dusty work.
Can the Massey Ferguson 145 lose power from a dirty air filter?
Use the power class to decide urgency. Higher airflow demand means less patience for questionable media, bad seals or packed pleats.
How should I read the Massey Ferguson 145 air-filter number?
The primary number looks like a Massey-style M-suffix number. That does not make it automatically correct, but it helps you spot obvious nonsense numbers in search results.
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 masseyferguson.com website before ordering or installing an air filter.
