PartsTable
Technical Data Sheet
Download PDF

6661G3 — HEAT EXCHANGER,AIR TO AIR,AIRCRA

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

6661G3: HEAT EXCHANGER,AIR TO AIR,AIRCRA.

HEAT EXCHANGER,AIR TO AIR,AIRCRA. Key specifications include material: ALUMINUM ALLOY CASE, overall_depth: 6.900 INCHES NOMINAL IN, overall_width: 5.570 INCHES NOMINAL IN, overall_height: 9.090 INCHES NOMINAL IN, end_item_identification: C-17 AIRCRAFT, part_name_assigned_by_controlling_agency: HEAT EXCHANGER 1ST AND 2ND STAGE. This part is cataloged in the U.S.

Government catalog under NSN 1660-01-541-6970, 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
6661G3
NSN: 1660-01-541-6970
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
CAGE: 11245 — BOYD CORPORATION (WOBURN) INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY CASE
overall_depth6.900 INCHES NOMINAL IN
overall_width5.570 INCHES NOMINAL IN
overall_height9.090 INCHES NOMINAL IN
end_item_identificationC-17 AIRCRAFT
part_name_assigned_by_controlling_agencyHEAT EXCHANGER 1ST AND 2ND STAGE
reference_number_differentiating_characteristicsAS DIFFER BY SOURCE CONTROL
NSN1660-01-541-6970
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HEAT EXCHANGER,AIR TO AIR,AIRCRA TITLE COMPONENT PN 6661G3 MFR HEAT EXCHANGER,AIR TO
KEY FEATURES
•
MATERIAL: ALUMINUM ALLOY CASE
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: AS DIFFER BY SOURCE CONTROL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT9.090 INCHES NOMINAL IN
OVERALL WIDTH5.570 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYHEAT EXCHANGER 1ST AND 2ND STAGE
END ITEM IDENTIFICATIONC-17 AIRCRAFT
MATERIALALUMINUM ALLOY CASE
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFFER BY SOURCE CONTROL
OVERALL DEPTH6.900 INCHES NOMINAL IN
OTHER ITEMS IN FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1660-00-006-4472 1660-00-009-5646 1660-00-019-8389 1660-00-019-8399 1660-00-031-5285 1660-00-302-4390 1660-00-441-0575 1660-01-601-0729
SUBSTITUTES & CROSS-REFERENCES 1
4900206Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 6661G3?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 6661G3?
6661G3 is a HEAT EXCHANGER,AIR TO AIR,AIRCRA.
What parts can replace 6661G3?
There is 1 known substitute for 6661G3: 4900206. Substitute compatibility should be verified for your specific system.
What is the NSN for 6661G3?
6661G3 is cataloged in the U.S. Government catalog under NSN 1660-01-541-6970. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 6661G3

✓ 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.