Cummins 66871 Seat, Helical Compression Spring

Cummins 66871 is a engine component in Engine Parts, US catalog. Listed by US Government (DLA FLIS), October 2026.

Specifications from Engine parts list (publisher, brand and date not printed)

Name as printed

RETAINER,VALVE SPRING

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

The U.S. government's Federal Logistics Information System (FLIS) records Cummins 66871 as the maker's own number under government stock item NSN 5340-00-353-9363. 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 5340-00-353-9363, under which this manufacturer's reference number is listed. Confirm compatibility and specifications with the manufacturer before ordering.

Government item name

Seat, Helical Compression Spring

Government stock item (NSN)

5340-00-353-9363

Manufacturer code (CAGE)

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

Countersink angle in deg

45.0

Overall height

0.4215 to 0.4565 in

First step diameter

0.8200 in (nominal)

First step length

0.0940 in (nominal)

Second step diameter

1.5000 in (nominal)

Bore diameter

0.4380 in (nominal)

Material hardness rating

Rockwell B 30.0 to 65.0

Design type

Solid

Countersink diameter

0.7500 in (nominal)

End diameter

0.0440 in (nominal)

Distance from end to first step

0.3120 in (nominal)

Counterbore length

0.4380 in (nominal)

Special features

Valve rocker assemblies,diesel engine

Material

Steel comp 1010

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)

A part of an engine named by its use. Replaced when worn, leaking or damaged. Check the engine model and serial range.

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.

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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.