Cummins 21539700 Pulley, Groove

Cummins 21539700 is a pulley in Engine Parts, US catalog. Listed by US Government (DLA FLIS), October 2026.

Government data (US Government (DLA FLIS), October 2026 edition)

The U.S. government's Federal Logistics Information System (FLIS) records Cummins 21539700 as the maker's own number under government stock item NSN 3020-01-079-4206. The name and every fact below are FLIS's, credited to US Government (DLA FLIS), October 2026 edition.

Specifications recorded for government stock item NSN 3020-01-079-4206, under which this manufacturer's reference number is listed. Confirm compatibility and specifications with the manufacturer before ordering.

Government item name

Pulley, Groove

Government stock item (NSN)

3020-01-079-4206

Manufacturer code (CAGE)

15434, CUMMINS INC., COLUMBUS, IN, UNITED STATES

Counterbore diameter

2.530 in (nominal)

Furnished items

Counterbore feature

Groove depth

0.140 in (nominal)

Groove width

0.140 in (nominal)

Outside diameter

4.000 in (nominal)

Overall length

1.500 in (nominal)

Bore diameter

2.125 in (nominal)

Bore length

1.500 in (nominal)

V groove angle in deg

40.0

Pitch diameter

4.0000 in (nominal)

Hub outside diameter

• AA end: 2.969 in (nominal)
• BB end: 2.625 in (nominal)

Face width

1.140 in (nominal)

Design form

Plain

Groove quantity

6

Counterbore location

AA end

Groove shape

V

Protruding hub characteristic

Plain

Material

Overall: iron cast

Source: US Government (DLA FLIS), October 2026 edition, a public U.S. government data release. This is not an official DLA record and may contain errors. Verify fitment before ordering. Not affiliated with or endorsed by the Defense Logistics Agency or the Department of Defense. SearchForPart does not show a price here.

About this kind of part (general, written by SearchForPart)

Drive the alternator, fan, water pump or compressor. Cracks, glazing, squeal or a worn pulley groove call for replacement. Check length, width and rib or groove count.

When ordering, give the part number exactly as printed and its maker, and the make, model and year of the truck, trailer, reefer unit or machine (or the engine or unit serial number). SearchForPart shows fitment only as the source printed it: check it before you order.

Availability

Not currently offered by an approved supplier. Ask us to source it and we look for a supplier.

Do you sell this part?

If you stock or supply this part, tell us about your business and what you sell.

Sell or Supply Parts

Source: US Government (DLA FLIS), October 2026 edition, a public U.S. government data release. This is not an official DLA record and may contain errors. Verify fitment before ordering. Not affiliated with or endorsed by the Defense Logistics Agency or the Department of Defense. SearchForPart does not show a price here.