PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21609Muffler,exhaust

Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems · NSN 2990-01-094-9527 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-094-9527 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-094-9527. Primary manufacturer part number: 21609.
Features
  • Muffler,exhaust — FSC 2990
  • Coolant Type: AIR
  • Muffler Design: STRAIGHT THROUGH
  • Body Shape: ROUND
  • Design Type: DRY
  • 1 verified cross-reference
  • Primary manufacturer: Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-01-094-9527, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2990-01-094-9527
Primary Part Number21609
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerStanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
StatusACTIVE
Coolant TypeAIR
Muffler DesignSTRAIGHT THROUGH
Body ShapeROUND
Design TypeDRY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5977-00-038-1477 INTERCHANGEABLE
Brush,electrical Contact
3040-00-149-251599121609 INTERCHANGEABLE
Shaft,shouldered
Alfa Laval Inc
5315-00-422-0604 INTERCHANGEABLE
Pin,grooved,headless
5950-00-510-177225701 INTERCHANGEABLE
Reactor
Freed Transformer Co
5950-00-581-217621-609 INTERCHANGEABLE
Coil,radio Frequency
Neurotech Corp Control Electronics Div
5935-00-626-8620970653-1 INTERCHANGEABLE
Retainer,electrical Connector
Raytheon Company Dba Raytheon
6625-00-828-96212160-9 INTERCHANGEABLE
Test Set,power Supply
Rockwell Collins, Inc. Dba Rc Displays Systems
5920-01-149-30639G0747 INTERCHANGEABLE
Fuseholder,block
Caterpillar Inc Div Caterpillar Defense
4320-01-230-061921609 INTERCHANGEABLE
Pump Clutch Assembl
Industrial Technologies and Services Llc
4720-01-298-553421609 INTERCHANGEABLE
Hose,preformed
Gates Corporation
Cross-Reference Index
Part NumberManufacturer
21609 PRIMARY Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
Related Parts
5977-00-038-1477INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
3040-00-149-2515INTERCHANGEABLE
SHAFT,SHOULDERED
99121609
5315-00-422-0604INTERCHANGEABLE
PIN,GROOVED,HEADLESS
5950-00-510-1772INTERCHANGEABLE
REACTOR
25701
5950-00-581-2176INTERCHANGEABLE
COIL,RADIO FREQUENCY
21-609
5935-00-626-8620INTERCHANGEABLE
RETAINER,ELECTRICAL CONNECTOR
970653-1
6625-00-828-9621INTERCHANGEABLE
TEST SET,POWER SUPPLY
2160-9
5920-01-149-3063INTERCHANGEABLE
FUSEHOLDER,BLOCK
9G0747
4320-01-230-0619INTERCHANGEABLE
PUMP CLUTCH ASSEMBL
21609
4720-01-298-5534INTERCHANGEABLE
HOSE,PREFORMED
21609
4320-01-365-7934INTERCHANGEABLE
GEAR ROTOR SET,ROTARY PUMP
24-45600-2083-2
2915-01-505-2490INTERCHANGEABLE
METERING SET
21609

Frequently Asked Questions

What is NSN 2990-01-094-9527?

NSN 2990-01-094-9527 is a Muffler,exhaust, manufactured by Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-01-094-9527?

NSN 2990-01-094-9527 has 1 cross-referenced part number: 21609 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems).

What NSN replaces 2990-01-094-9527?

There are 12 known substitutes for 2990-01-094-9527: 5977-00-038-1477, 3040-00-149-2515, 5315-00-422-0604 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21609?

Key specifications for 21609: Coolant Type: AIR; Muffler Design: STRAIGHT THROUGH; Body Shape: ROUND; Overall Length: 2.380 INCHES NOMINAL IN. 5 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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