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PartsTable / COMPONENT / CA21
CA21 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

FILTER ELEMENT,INTAKE AIR CLEANE. Key specifications include filter: NOT INCLUDED, material: STEEL, dial_size: 2.5 IN IN, body_style: STRAIGHT THRU, scale_name: PRESSURE-VACUUM, scale_type: DIAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2940-00-179-5505, 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
CA21
NSN: 2940-00-179-5505
FSC: 2940
CAGE: 73370 — HONEYWELL INTERNATIONAL INC DBA HONEYWELL DIV CONSUMER PRODUCTS GROUP (USA)
SPECIFICATIONS
filterNOT INCLUDED
materialSTEEL
dial_size2.5 IN IN
body_styleSTRAIGHT THRU
scale_namePRESSURE-VACUUM
scale_typeDIAL
scale_range-30.0 TO 30.0 INCHES OF VACUUM IN
temp_rating-40.0 FAHRENHEIT MINIMUM AND 180.0 FAHRENHEIT MAXIMUM DEGF
pointer_typeINDICATING
adjustabilityNONADJUSTABLE
hole_diameter8.0 INCHES NOMINAL ALL HOLES IN
overall_width4.500 INCHES NOMINAL IN
NSN2940-00-179-5505
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER ELEMENT,INTAKE AIR CLEANE TITLE COMPONENT PN CA21 MFR FILTER ELEMENT,INTAKE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
297BCInterchangeable
interchangeable cross-reference
interchangeable
21-291Interchangeable
interchangeable cross-reference
interchangeable
CR77048PC121Interchangeable
interchangeable cross-reference
interchangeable
2970Interchangeable
interchangeable cross-reference
interchangeable
72-6970-445Interchangeable
interchangeable cross-reference
interchangeable
7311PWFS179Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CA21?
CA21 is a FILTER ELEMENT,INTAKE AIR CLEANE.
What parts can replace CA21?
There are 25 known substitutes for CA21: 297BC, 21-291, CR77048PC121 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CA21?
CA21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2940-00-179-5505. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026