Cummins BM62440 Piston, Internal Combustion Engine

Cummins BM62440 is a piston 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 BM62440 as the maker's own number under government stock item NSN 2815-00-958-0355. 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 2815-00-958-0355, under which this manufacturer's reference number is listed. Confirm compatibility and specifications with the manufacturer before ordering.

Government item name

Piston, Internal Combustion Engine

Government stock item (NSN)

2815-00-958-0355

Manufacturer code (CAGE)

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

Furnished items

Pin and retaining ring groove

Overall height

4.887 in (nominal)

Diameter

4.095 in (nominal)

Pinhole diameter

1.4990 in (nominal)

Surface finish

Finished

Finished size designation

Standard

Skirt type

Solid

Ring groove quantity

4

Ring groove width

• First ring: 0.1070 in (nominal)
• Fourth ring: 0.1890 to 0.1900 in
• Second ring: 0.1070 in (nominal)
• Third ring: 0.1090 in (nominal)

Groove taper angle

15 degree 8 minutes porm @0 degree 8 @minutes including angle

Ring groove diameter

• First ring: 3.720 to 3.750 in
• Fourth ring: 3.682 to 3.692 in
• Second ring: 3.720 to 3.750 in
• Third ring: 3.720 to 3.750 in

Distance from pin hole center to extreme top

3.010 to 3.014 in

Distance between pin bosses

1.315 to 1.345 in

Pin type for which designed

Floating

Material

Aluminum alloy

Surface treatment

Tin

Weight

57.340 oz

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)

Moves in the cylinder and passes combustion force to the connecting rod. Replaced in a rebuild or after scoring, cracking or overheating. Check bore size, compression height and the engine rating.

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.