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990121 — FILTER ELEMENT,INTAKE AIR CLEANE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

990121: FILTER ELEMENT,INTAKE AIR CLEANE.

FILTER ELEMENT,INTAKE AIR CLEANE. Key specifications include design_type: LIMITED, body_diameter: 3.250 INCHES NOMINAL IN, style_designator: CYLINDRICAL W/ CONTAINER (RIGID), body_overall_length: 6.500 INCHES NOMINAL IN, body_inside_diameter: 1.344 INCHES NOMINAL IN, fsc_application_data: FUEL SYSTEM,GASOLINE ENGINE,NONAIRCRAFT. This part is cataloged in the U.S.

Government catalog under NSN 2940-00-135-6531, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
990121
NSN: 2940-00-135-6531
FSC: 2940 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
design_typeLIMITED
body_diameter3.250 INCHES NOMINAL IN
style_designatorCYLINDRICAL W/ CONTAINER (RIGID)
body_overall_length6.500 INCHES NOMINAL IN
body_inside_diameter1.344 INCHES NOMINAL IN
fsc_application_dataFUEL SYSTEM,GASOLINE ENGINE,NONAIRCRAFT
filtering_media_designPLEATED SINGLE FILTERING MEDIA RESPONSE
NSN2940-00-135-6531
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER ELEMENT,INTAKE AIR CLEANE TITLE COMPONENT PN 990121 MFR FILTER ELEMENT,INTAKE
KEY FEATURES
•
FILTERING MEDIA DESIGN: PLEATED SINGLE FILTERING MEDIA RESPONSE
•
BODY DIAMETER: 3.250 INCHES NOMINAL IN
•
FSC APPLICATION DATA: FUEL SYSTEM,GASOLINE ENGINE,NONAIRCRAFT
•
BODY OVERALL LENGTH: 6.500 INCHES NOMINAL IN
•
DESIGN TYPE: LIMITED
•
STYLE DESIGNATOR: CYLINDRICAL W/ CONTAINER (RIGID)
•
BODY INSIDE DIAMETER: 1.344 INCHES NOMINAL IN
•
MATERIAL: PAPER FILTERING MEDIUM
TECHNICAL CHARACTERISTICS
FILTERING MEDIA DESIGNPLEATED SINGLE FILTERING MEDIA RESPONSE
BODY DIAMETER3.250 INCHES NOMINAL IN
FSC APPLICATION DATAFUEL SYSTEM,GASOLINE ENGINE,NONAIRCRAFT
BODY OVERALL LENGTH6.500 INCHES NOMINAL IN
DESIGN TYPELIMITED
STYLE DESIGNATORCYLINDRICAL W/ CONTAINER (RIGID)
BODY INSIDE DIAMETER1.344 INCHES NOMINAL IN
MATERIALPAPER FILTERING MEDIUM
MATERIALSTEEL CONTAINER/CARTRIDGE
OTHER ITEMS IN FSC 2940 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2940-00-001-1259 2940-00-001-3513 2940-00-001-3988 2940-00-001-3991
SUBSTITUTES & CROSS-REFERENCES 2
P11-3989Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
11662692Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 990121?
990121 is a FILTER ELEMENT,INTAKE AIR CLEANE.
What parts can replace 990121?
There are 2 known substitutes for 990121: P11-3989, 11662692. Substitute compatibility should be verified for your specific system.
What is the NSN for 990121?
990121 is cataloged in the U.S. Government catalog under NSN 2940-00-135-6531. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.