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BALDWIN · Engine Air Filter

CA30203

Channel Flow Air Element

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Call either store for your current price.
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Stock checked October 2, 11:37 AM Eastern. Call before travelling so we can confirm what is still available.

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THE DETAILS THAT MATTER

FILTER SPECIFICATIONS.

Filter type
Channel Flow EXO Air Element
Outside diameter
21 5/8 in.
Outside diameter (mm)
549.3
Length
13 3/32 in.
Length (mm)
332.58
Manufacturer part number
CA30203
GTIN
00791440107250

Baldwin replacement references: Caterpillar 2804180; Donaldson P643217

Baldwin PIES August 20, 2026 · Baldwin Product Guide July 24, 2026.

START WITH THE NUMBER YOU HAVE

CROSS-REFERENCE NUMBERS.

Manufacturer catalogs list the references below for CA30203. GK Industries-supplied references are identified in the note column. Keep any size, quantity or application conditions with the match. A cross-reference alone does not confirm fit on your equipment.

4 manufacturer reference rows

Brand / manufacturerReference numberCondition / noteReference qty
BALDWIN FILTERSCA302031
CARQUEST937931
CATERPILLAR28041801
DONALDSONP6432171

Sources: Baldwin Specs & Interchange · July 27, 2026; GK Industries PIES · August 21, 2026, where identified. Reference quantity is part of the manufacturer’s cross-reference, not store stock.

CHECK THE EQUIPMENT. CHECK THE ENGINE.

APPLICATIONS & EQUIPMENT.

Caterpillar Generators

Baldwin Product Guide summary. This description does not establish fit for every model from each manufacturer.

Call with your equipment model, engine and the number on the existing filter. Our counter will help verify the application.

A REAL COUNTER. CLOSE TO HOME.

YOUR LOCAL FILTER PEOPLE.

Bring the number off your old filter, or your equipment and engine details. We’ll help check the match.