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Technical Data Sheet
17644-4 ✓ 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

COVER,ENGINE POPPET VALVE ROCKER. Key specifications include material: STEEL COMP 440C INNER MEMBER, bore_diameter: 0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN, hardness_rating: 55.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM INNER MEMBER, style_designator: WITH INSERT AND/OR LINER, inner_member_width: 0.4040 INCHES MINIMUM AND 0.4060 INCHES MAXIMUM IN, outer_member_width: 0.3070 INCHES MINIMUM AND 0.3170 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2815-00-179-7952, 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
17644-4
NSN: 2815-00-179-7952
FSC: 2815
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 440C INNER MEMBER
bore_diameter0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
hardness_rating55.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM INNER MEMBER
style_designatorWITH INSERT AND/OR LINER
inner_member_width0.4040 INCHES MINIMUM AND 0.4060 INCHES MAXIMUM IN
outer_member_width0.3070 INCHES MINIMUM AND 0.3170 INCHES MAXIMUM IN
lubrication_featureSELF-LUBRICATING LINER RACE LINER
static_radial_load_rating10540 POUNDS LBS
outer_member_outside_diameter0.8120 INCHES MINIMUM AND 0.8125 INCHES MAXIMUM IN
material_document_and_classificationAMS 5630 ASSN STD SINGLE MATERIAL RESPONSE INNER MEMBER
NSN2815-00-179-7952
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COVER,ENGINE POPPET VALVE ROCKER TITLE COMPONENT PN 17644-4 MFR COVER,ENGINE POPPET VA
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
21TInterchangeable
interchangeable cross-reference
interchangeable
37631Interchangeable
interchangeable cross-reference
interchangeable
1813CAInterchangeable
interchangeable cross-reference
interchangeable
4312986Interchangeable
interchangeable cross-reference
interchangeable
3763Interchangeable
interchangeable cross-reference
interchangeable
42357Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 17644-4?
17644-4 is a COVER,ENGINE POPPET VALVE ROCKER.
What parts can replace 17644-4?
There are 15 known substitutes for 17644-4: 21T, 37631, 1813CA and 12 more. Substitute compatibility should be verified for your specific system.
Is 17644-4 still available?
17644-4 is currently cancelled.
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