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BALDWIN · Engine Air Filter

PA644

Air Breather Element

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Call either store for your current price.
Belleville APCCall for availability
Kingston APCCall for availability

Stock checked September 11, 12:46 PM Eastern. Call before travelling so we can confirm what is still available.

THE DETAILS THAT MATTER

FILTER SPECIFICATIONS.

Filter type
Air Breather Element
Outside diameter
3 1/16 in.
Outside diameter (mm)
77.8
Inside diameter
1 9/16 in.
Length
3 5/8 in.
Length (mm)
92.1
Manufacturer part number
PA644
GTIN
00791440007307

Baldwin replacement references: Euclid 9023871; GMC 6483993

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

START WITH THE NUMBER YOU HAVE

CROSS-REFERENCE NUMBERS.

Baldwin’s reference lists the numbers below for PA644. Keep any size, quantity or application conditions with the match. A cross-reference alone does not confirm fit on your equipment.

39 manufacturer reference rows

Brand / manufacturerReference numberCondition / noteReference qty
ACDELCOCB101
AIR REFINERAR1211
AMERICAN PARTS937221
AMERICAN PARTS9431
BALDWIN FILTERSPA6441
BIG A FILTER937221
CARQUEST877221
DONALDSONP5298821
EUCLID40420981
EUCLID404209861
EUCLID90238711
EUCLIDE40420981
FLEETGUARDAF19491
FLEETRITEAFR819491
FRAM FiltersCA33971
GM GENERAL MOTORS64839921
GM GENERAL MOTORS64839931
GM GENERAL MOTORS90238711
GM GENERAL MOTORS90283711
GONHERGA251
GRAINGER4ZEW51
HASTINGSPA6441
HYSTER1409211
KRALINATORLA2451
LUBER-FINERLAF14641
MOTORCRAFTFA8551
NAPA GOLD27221
NU-TECHN03621
PUROLATORA122301
PUROLATORAF22301
QUAKER STATEQSA33971
UNITED ENGINE LIFEEL1051
VOLVO40420981
VOLVOVOE40420981
WESTERN TOOL CO.WA22511
WIX427221
WIX5427221
WIXDT7221
WOODGATEWGA8211

Source: Baldwin Specs & Interchange · July 27, 2026. Reference quantity is part of the manufacturer’s cross-reference, not store stock.

CHECK THE EQUIPMENT. CHECK THE ENGINE.

APPLICATIONS & EQUIPMENT.

Euclid, Hitachi, Terex Equipment; GMC Engines

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.