Where to buy
 | eBay | 106-3973 AIR FILTER INNER Suitable For Caterpillar Shipping from Texas or Miami | $39.31 | View → |
 | eBay | Genuine CAT Caterpillar 106-3973 Radial Seal Engine Air Filter Element OEM | $79.98 | View → |
| Amazon | Search Amazon for 1063973 | see price | View → |
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Supersessions & cross-references
OEM & filter cross-referencesP533884 FridayParts $62.16 DONALDSON
Cross-reference (aftermarket)CA1063973 FridayParts $62.16
OEM & filter cross-references from manufacturer catalogs (Donaldson, WiX, Baldwin). Supersessions and aftermarket cross-references from marketplace/supplier listings — treat as leads. Verify the exact part for your serial number before ordering.