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Air & Exhaust Article - Big Honking Air Filter

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This is a short list of BHAF that can be used on the Cummins 5.9L diesel.

Some of the BHAF are the same size and will be listed together.

L= length, OD= outside diameter, ID= inside connection diameter, 

BHAF: NAPA FIL 2790, WIX 42790, Fleetguard AH19037, Hastings Af1012, and Baldwin PA2820

L          11.88”

OD      10.50”

ID         4.0”


Pre filter for above BHAF



BHAF: Napa FIL 6637, WIX 46637, Fleetguard AH1141, Hastings AF2329, Donaldson ECB085011, Baldwin PA2818 and Cummins 3912020

L          12.38”

OD        8.50”

ID        4.0”


Pre filter for above BHAF



Donaldson B105006

L          10.50”

OD      10.50”

ID          4.0”



Surface area

12.38"h x 8.5"d = 330.59 in²

10.50"h x 10.5"d = 346.35 in²      ~ 04% larger than #1

11.88"h x 10.5"d = 391.87 in²      ~ 18% larger than #1    ~ 13% larger than #2




Prepared by:  J. Daniel Martin / Martin’s Mobile Maintenance

AKA:  ibmobile


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