Thermo King 12-338 Muffler, Exhaust

Thermo King 12-338 is a reefer unit engine parts in Refrigeration Units (Reefer), 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 Thermo King 12-338 as the maker's own number under government stock item NSN 2990-01-066-9273. 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 2990-01-066-9273, under which this manufacturer's reference number is listed. Confirm compatibility and specifications with the manufacturer before ordering.

Government item name

Muffler, Exhaust

Government stock item (NSN)

2990-01-066-9273

Manufacturer code (CAGE)

61510, THERMO KING CORPORATION DBA PHOENIX GLOBAL DISTIRBUTION., MINNEAPOLIS, MN, UNITED STATES

Overall length

28.000 in (nominal)

Inlet connection type

Single inlet: unthreaded

Overall diameter

5.000 in (nominal)

Outlet inside diameter

First outlet: 1.150 in (nominal)

Design type

Dry

Coolant type

Air

Muffler design

Straight through W/baffle

Baffle quantity

1

Tube quantity

1

Body shape

Round

Inlet location

Located on side at the end single inlet

Inlet projection length

Single inlet: 2.750 in (nominal)

Inlet outside diameter

Single inlet: 1.250 in (nominal)

Inlet inside diameter

Single inlet: 1.150 in (nominal)

Outlet connection type

First outlet: unthreaded

Outlet location

Offset at end opposite inlet first outlet

Outlet projection length

First outlet: 5.500 in (nominal)

Outlet outside diameter

First outlet: 1.250 in (nominal)

Special features

90.0 deg bend in inlet and outlet tubes

Material

Steel

Surface treatment

Paint

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)

Parts of the small diesel engine that drives a trailer or truck refrigeration unit. Replaced for the same reasons as truck engine parts. Check the unit model and serial number.

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.