189-0202 is the Caterpillar secondary (inner) air filter element, sold as a matched pair with the 151-7737 primary (outer) air filter element. Both numbers are commonly listed together because they are replaced as a set during engine air filter service.
| Attribute | 151-7737 (Primary / Outer) | 189-0202 (Secondary / Inner) |
|---|---|---|
| Filter Type | Radial-seal engine air filter, primary element | Radial-seal engine air filter, secondary/safety element |
| Height | 583–584 mm | 563 mm |
| Outer Diameter | 310–313 mm | 179 mm |
| Inner Diameter | 177–179 mm | Fits inside the 151-7737 primary element |
| Filter Media | Pleated cellulose / high-efficiency filter paper | Pleated cellulose / high-efficiency filter paper |
Dimensions are based on independently published third-party filter manufacturer data and are consistent across sources. For a formal dimensional drawing, please contact us for a quote.
The 151-7737 / 189-0202 air filter set is used on Caterpillar heavy equipment and engines requiring this air filter housing size, and is commonly requested for:
Please confirm your exact equipment model and engine serial number before ordering, and always replace the primary and secondary elements as a matched pair.
| Brand | Primary (= 151-7737) | Secondary (= 189-0202) |
|---|---|---|
| Caterpillar | 151-7737 | 189-0202 |
| Baldwin | RS3826 | RS3827 |
| Donaldson | P777871 | P777875 |
| Fleetguard | AF25619 | AF25620 |
| Hengst | E807L | E786LS |
| Mann | C321900 | CF18211 |
| DeMalong Filter (our replacement) | Contact us for our part number | |
Cross-reference numbers are provided for identification purposes only. DeMalong Filter Inc. products are aftermarket replacements and are not affiliated with, sponsored by, or manufactured by Caterpillar or any brand referenced above. All trademarks belong to their respective owners.
| Samples | Sample units available for testing and quality verification prior to bulk order |
|---|---|
| Customization | Primary and secondary elements available separately or as a matched set; private-label packaging available on request |
| Packaging | Individual box with DeMalong brand and part number, or neutral / customer-branded packaging on request |
| Lead Time & MOQ | Varies by order quantity and customization — submit an inquiry for a specific lead time and MOQ quote. |
The 189-0202 filter element is primarily designed for use in air filtration systems. While specific dimensions for this model are not provided in the available sources, it is known to be compatible with a range of equipment and industries.
Applicable Equipment:
Applicable Industries:
These filters play a crucial role in maintaining the cleanliness of the working medium, effectively controlling the contamination levels across various industrial applications.
Related Filter Models:
For precise dimensions and further technical specifications of the 189-0202 filter element, it is recommended to consult the manufacturer's official documentation or contact their technical support directly.
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