The Massey Ferguson 1240 tractor primary air filter part number is 3703704M91. The inner safety filter is 3703704M91.
Massey Ferguson 1240 Air Filter Details
Primary air filter part number
3703704M91
Inner safety air filter part number
3703704M91
Outer air filter part number
3703703M91
Air Filter Service Interval Guide
Air Filter Service Interval Guide
Dusty use
100 hrs
Average
250 hrs
Light use
500 hrs
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.
Massey Ferguson 1240 Extra Air Filter Notes
Engine model
Iseki 1.5L
Engine displacement
1.5 L | 91.5 cu in
Engine horsepower
28.4 hp | 21.2 kW
Primary filter note
For the Massey Ferguson 1240, the listed primary air filter part number is 3703704M91. 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 3703703M91.
Safety filter note
The listed inner safety air filter is 3703704M91. 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
For a smaller tractor, the filter may not look dramatic, but dirt ingestion is still the killer. Dry mowing, loader work and chaff are bigger triggers than engine hours alone.
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.
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 1240 Air Filter FAQs
Which Massey Ferguson 1240 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 3703703M91 when you meant the safety filter, or 3703704M91 when you meant the outer filter.
How do I avoid buying the wrong Massey Ferguson 1240 air filter?
The safest match is not just the printed number. Use 3703704M91, then check whether the element seats fully without forcing the cover. The primary and inner numbers look similar at the end, so check the full number carefully before ordering.
How can part-number style help check a Massey Ferguson 1240 filter?
Multiple numbers are useful only if each one is tied to the correct element position. Wrong element in the right brand is still wrong.
Can the Massey Ferguson 1240 lose power from a dirty air filter?
For a smaller tractor, the filter may not look dramatic, but dirt ingestion is still the killer. Dry mowing, loader work and chaff are bigger triggers than engine hours alone.
Is the Massey Ferguson 1240 outer filter the same as the primary filter?
The presence of both outer and inner numbers means you should order carefully. A kit can be convenient, but only if it contains the correct service element and safety element.
Can a Massey Ferguson 1240 engine swap change the air filter?
The engine family, displacement and power class help explain why the filter matters, but they do not prove fit. The air-cleaner canister and old element are still the authority.
What does Massey Ferguson 1240 displacement say about air-filter fit?
Engine size is useful context for service urgency, not a license to ignore the part number. The canister and seal decide fitment.
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.
