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PartsTable / COMPONENT / AW503-37818-4 ITEM 1
AW503-37818-4 ITEM 1 ✓ 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

The HEAD,FLUID FILTER is a the manufacturer industrial component. Key specifications include material: STEEL OUTER LAYER, corner_shape: SQUARE ALL CORNERS, overall_width: 3.460 INCHES NOMINAL IN, overall_height: 2.250 INCHES NOMINAL IN, overall_length: 1.4400 INCHES NOMINAL IN, mounting_method: UNTHREADED HOLE(S). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4330-01-395-3470, 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
AW503-37818-4 ITEM 1
NSN: 4330-01-395-3470
FSC: 4330
CAGE: 0D8H4 — EXSTAR INTERNATIONAL CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OUTER LAYER
corner_shapeSQUARE ALL CORNERS
overall_width3.460 INCHES NOMINAL IN
overall_height2.250 INCHES NOMINAL IN
overall_length1.4400 INCHES NOMINAL IN
mounting_methodUNTHREADED HOLE(S)
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
basic_shape_styleIRREGULAR
body_inside_diameter1.3740 INCHES MINIMUM AND 1.3750 INCHES MAXIMUM IN
body_outside_diameter1.4380 INCHES MINIMUM AND 1.4400 INCHES MAXIMUM IN
mounting_hole_diameter0.435 INCHES MINIMUM AND 0.442 INCHES MAXIMUM IN
end_item_identificationRADAR SET,AN/TPS-43
NSN4330-01-395-3470
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HEAD,FLUID FILTER TITLE COMPONENT PN AW503-37818-4 ITEM 1 MFR HEAD,FLUID FILTER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
337D254-1 AND 337D255-2Interchangeable
interchangeable cross-reference
interchangeable
337D254H01Interchangeable
interchangeable cross-reference
interchangeable
37816Interchangeable
interchangeable cross-reference
interchangeable
GTB3576Interchangeable
interchangeable cross-reference
interchangeable
E10580Interchangeable
interchangeable cross-reference
interchangeable
AW503-37818-4 ITEM 2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AW503-37818-4 ITEM 1?
AW503-37818-4 ITEM 1 is a HEAD,FLUID FILTER.
What parts can replace AW503-37818-4 ITEM 1?
There are 12 known substitutes for AW503-37818-4 ITEM 1: 337D254-1 AND 337D255-2, 337D254H01, 37816 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AW503-37818-4 ITEM 1?
AW503-37818-4 ITEM 1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4330-01-395-3470. 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