PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20250Exhaust System,engine

Aqualarm Inc · NSN 2990-01-596-4493 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-596-4493 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-596-4493. Primary manufacturer part number: 20250.
Features
  • Exhaust System,engine — FSC 2990
  • 1 verified cross-reference
  • Primary manufacturer: Aqualarm Inc
Applications
  • Mechanical power generation
  • Drive system operation
  • Auxiliary equipment operation
General Description

The Exhaust System,engine, cataloged under National Stock Number 2990-01-596-4493, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Aqualarm Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2990-01-596-4493
Primary Part Number20250
Item NameExhaust System,engine
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerAqualarm Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4820-01-030-2730A12523.013.253 INTERCHANGEABLE
Ring,seat
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
6680-01-059-0603G-2004-36 INTERCHANGEABLE
Indicator,sight,liquid
Gil, Inc.
5962-01-099-4821SD61887 INTERCHANGEABLE
Microcircuit,digital
National Semiconductor Corporation
8040-01-394-3735 INTERCHANGEABLE
Adhesive
6515-01-590-86659021 INTERCHANGEABLE
Docking Station,pulse Oximeter
Masimo Corporation
Cross-Reference Index
Part NumberManufacturer
20250 PRIMARY Aqualarm Inc (USA)
Related Parts
4820-01-030-2730INTERCHANGEABLE
RING,SEAT
A12523.013.253
6680-01-059-0603INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
G-2004-36
5962-01-099-4821INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
SD61887
8040-01-394-3735INTERCHANGEABLE
ADHESIVE
6515-01-590-8665INTERCHANGEABLE
DOCKING STATION,PULSE OXIMETER
9021

Frequently Asked Questions

What is NSN 2990-01-596-4493?

NSN 2990-01-596-4493 is a Exhaust System,engine, manufactured by Aqualarm Inc, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-01-596-4493?

NSN 2990-01-596-4493 has 1 cross-referenced part number: 20250 (Aqualarm Inc).

What NSN replaces 2990-01-596-4493?

There are 5 known substitutes for 2990-01-596-4493: 4820-01-030-2730, 6680-01-059-0603, 5962-01-099-4821 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20250?

Key specifications for 20250: Special Features: SENDER, TEMP, EXHAUST; End Item Identification: MARINE BOAT APPLICATION; Part Name Assigned by Controlling Agency: EXHAUST OVERHEAT DETECTOR. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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