The Case IH D29 tractor primary air filter part number is 381423R92. The inner safety filter is 187472A1.
Case IH D29 Air Filter Details
| Primary air filter part number | 381423R92 |
|---|---|
| Inner safety air filter part number | 187472A1 |
| Outer air filter part number | Same as primary air filter |
| Air filter dimensions | Length: 12 in | Outside diameter: 6.5 in | Inside diameter: 3 in |
Air Filter Service Interval Guide
Air Filter Service Interval Guide
Listed Filter Size Check
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.
Case IH D29 Extra Air Filter Notes
| Engine model | Shibaura 1.3L |
|---|---|
| Engine displacement | 1.3 L | 79.3 cu in |
| Engine horsepower | 29 hp | 21.6 kW |
| Primary filter note | For the Case IH D29, the listed primary air filter part number is 381423R92. Match the number before buying because air cleaner setups can vary by engine, serial range and market. |
| Outer filter note | The outer air filter for the Case IH D29 appears to be the same listed item as the primary filter. |
| Safety filter note | The listed inner safety air filter is 187472A1. Do not remove the safety element for normal cleaning; replace it if dirty, damaged or oil-soaked. |
| Fitment note | Listed dimensions: Length: 12 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 12 in and normal outside diameter at 6.5 in. Use that as a fitment sanity check against the old filter. |
| Power range note | The important combo is power plus element size. That tells you whether restriction is a real working problem or mainly a fit/seal problem. |
| Engine airflow note | Displacement and horsepower together explain airflow demand better than either one alone, but the air-cleaner housing still proves fit. |
| 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. |
Case IH D29 Air Filter FAQs
What would make a Case IH D29 air filter cross-listing suspicious?
Use 381423R92 as the anchor number, then verify the old element and housing label. This is a mixed letter-and-number part number, and the setup looks like a primary/outer service element plus an inner safety element, 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 the Case IH D29 air filter become a restriction under load?
The combo is a practical warning system. If the element is packed, damaged or not sealing, the engine can lose airflow long before the filter looks catastrophic.
Should I order one filter or a full Case IH D29 air-filter set?
For normal service, the primary/outer element is the one that does the dirty work. The inner safety element is backup protection, so replace it less often and keep it seated while cleaning the housing.
Should I trust Case IH D29 air-filter dimensions or the part number?
This looks like a mid-size element. Use the dimensions to reject obvious bad cross-references, especially if the inner diameter or seal lip does not match the removed element.
How should I read the Case IH D29 air-filter number?
Use the full 381423R92 string. Do not trim suffixes or ignore letters; small part-number changes can mean a different seal or element length.
Can the Case IH D29 lose power from a dirty air filter?
The important combo is power plus element size. That tells you whether restriction is a real working problem or mainly a fit/seal problem.
Is the Case IH D29 outer filter the same as the primary filter?
For this setup, think of primary and outer as the dirty-work element. The inner safety element is not part of every quick service.
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 caseih.com website before ordering or installing an air filter.
