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BALDWIN · Engine Air Filter

PA643

Air Breather Element

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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
2 7/8 in.
Outside diameter (mm)
73.0
Inside diameter
1 3/8 in.
Length
2 11/16 in.
Length (mm)
68.3
Manufacturer part number
PA643
GTIN
00791440007291

Baldwin replacement references: Clark 945345; Euclid 123716; LeTourneau VF2049

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 PA643. Keep any size, quantity or application conditions with the match. A cross-reference alone does not confirm fit on your equipment.

193 manufacturer reference rows

Brand / manufacturerReference numberCondition / noteReference qty
ACDELCOFB331
ACDELCOPC1931
ACDELCOPC391
ACDELCOPC401
ADAMS1237161
ADAMS1327161
AIR REFINERARM31
ALFA ROMEO1163435301001
ALLCARACB51
AMERICAN PARTS1041
AMERICAN PARTS1281
AMERICAN PARTS937161
AP FILTERSAP6881
AP LOCKHEED5744771
AP LOCKHEEDAP6881
AP LOCKHEEDAP688A1
AP LOCKHEEDFA4771
AP LOCKHEEDLK6881
ASAHIKA16211
AUSTIN1237161
AUSTIN-WESTERN1237161
AUTOCAR8593371
BALDWIN FILTERSPA6431
BECK/ARNLEY4203801
BIG A FILTER1041
BIG A FILTER937161
BOWESLAF1901
BROCKWAY1237161
CARQUEST877161
CASE244241R911
CASE244241R921
CATERPILLAR3307801
CATERPILLAR3I10441
CHAMPION LABORATORIESAF1901
CHAMPION LABORATORIESLAF1901
CHRYSLER1237161
CHRYSLERL4191
CLARK EQUIPMENT1237161
CLARK EQUIPMENT9453541
CLARK EQUIPMENT9456221
CO-OPAP1221
CO-OPPMA1221
COLES87541161
COOPERSAG3161
COOPERSAZA0811
CROSLAND8241
CUMMINS1237161
CUMMINS154272Filter Only1
CUMMINS2559631
CUMMINS2570141
CUMMINSCA2501
CUMMINSFA2501
CYCLONEPMA1221
DELUXE5151
DELUXEAF5151
DIAMOND REO1237161
DIAMOND REO8593371
DIAMOND REODR2501
DONALDSONP5264131
EIMCO1237161
ERFC2559631
EUCLID1237161
FAMELFR8701
FIAAMFL64791
FILTA22261
FILTER CONTROL LTD.FCL2771
FILTER MEXFMA1901
FLEETGUARD154272S1
FLEETGUARD156779SFilter Only1
FLEETGUARD156780SFilter Only1
FLEETGUARDAF2501
FLEETRITEAFR82501
FODENCU2559631
FORD MOTOR1237161
FORD MOTOR72ME6A631AAA1
FORD MOTOR72MF6A631AAA1
FORD MOTOR749F6A641ABA1
FORD MOTOR749F6A752AAA1
FORD MOTORBC01DN491171
FORD MOTORC6RZ6A631A1
FRAM FiltersCA1901
FRAM FiltersCA190PL1
GALION1237161
GALIOND878631
GM GENERAL MOTORS1237161
GM GENERAL MOTORS56486791
GONHERGA391
GONHERGA39M1
GOULDAP1221
GRADALL1237161
GRADALL427161
GRADALL761083791
GRADALL850714431
GRADALLH1083791
GRAINGER4ZEW41
GREYFRIARS221A1
GUD FILTERSA691
GUD FILTERSAG3161
HASTINGSPA6431
HENDRICKSON1237161
HOUGH1237161
HUBER-WARCO1237161
IHC INTERNATIONAL HARVESTER1237161
IHC INTERNATIONAL HARVESTER244241R911
IHC INTERNATIONAL HARVESTER244241R921
IHC INTERNATIONAL HARVESTER998458R911
IHC INTERNATIONAL HARVESTERLH436231
INTL PARTS SERVICE451431
JOY1237161
JURA (HIFI)SA102001
KENWORTH1237161
KOHLER231751
KOHLERH436231
KOMATSU61121386401
KOMATSU66121386401
KOMATSU66202175101
KOMATSU66202175501
KRALINATORLA911
KRUPP72728203011
L.B. FILTERA5201
LEROIH436231
LETOURNEAU1237161
LETOURNEAUVF20491
LEYLAND1237161
LEYLANDCU21559631
LEYLANDCU2559631
LEYLANDCU7016451
LORAIN1237161
LUBER-FINERLAF1901
M FILTERMA689P1
MACK1237161
MANN+HUMMELC7101
MANN+HUMMELC891
MICRO POREPMAR1901
MOBIL 1MCA311
MOPARL4191
MOTORCRAFTFA5011
MOTRIXMA391
MUIR-HILL2578781
NAPA GOLD27161
NELSON70873N1
NELSON84551N1
NU-TECHN02681
OLIVER1237161
OSHKOSH1237161
P&H PAWLING & HARNISCHFEGER1046Z661
PBRAI31791
PERMATICFA43001
PERRYPA5151
PETTER1237161
PETTIBONE-MULLIKEN1237161
PUROLATORA100311
PUROLATORAF30071
PUROLATORAF300781
PUROLATORAF311
PUROLATORB559871
REFILCOAF311
REFILCOPLA3031
REO8593371
ROL-PAKDCQ1231
RYCOA691
RYCOHDA691
SAKURAA57051
SAVARA922864171
SF-FILTER / SCHUPPSL87361
STAY READYSRPAM311
SURE FILTER TECHNOLOGYSFA75501
TOWMOTOR3307801
TRUCK CARE73050501
UNITED AIR CLEANERUP311
UNITED ENGINE LIFEUP311
VERA11007831
VERSATILE602T1201
VOLVO791998081
VOLVOVOE791998081
WABCO1237161
WABCOVF20491
WARD LAFRANCE1237161
WARD LAFRANCE8593371
WARNER761083791
WARNERH1083791
WARNER & SWASEY761083791
WARNER & SWASEYH1083791
WESTERN TOOL CO.WA20041
WGBS133CP1
WGBSA133CP1
WHITE10A312551
WHITE1237161
WHITE8593371
WHITE859337A1
WIX427161
WIXDT7161
WOODGATEWGA4951

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.

Adams, Clark, Euclid, Hymac, Koehring, LeTourneau-Marathon, LeTourneau-Westinghouse, Massey Ferguson, Michigan, Versatile, Yale Equipment; Kenworth, Mack Trucks

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

Match the year, model, engine and every note. Bring the engine or serial number when a configuration is unclear.

11 application ranges

YearsMake & modelEngineRequired notes & configuration
1975–1976Alfa Romeo Alfetta2.0 L 4
1975–1979Alfa Romeo Spider2.0 L 4
1978Alfa Romeo Sport2.0 L 4
1977–1979Alfa Romeo Sprint2.0 L 4
1984–1989Bertone X-1/91.5 L 4OE Number : PA643
1971–1973Fiat 1241.4 L 4
1971–1974Fiat 1241.6 L 4
1975–1978Fiat 1241.8 L 4
1975–1976, 1979Fiat 1281.3 L 4
1975–1978Fiat 1311.8 L 4
1975–1977Fiat X-1/91.3 L 4

Baldwin ACES · July 27, 2026 · Auto Care vehicle definitions. This searchable list may not cover every application. Our counter can check configurations not shown.

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.