PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

EM1Muffler,exhaust

Mosier Fluid Power of Ohio Inc Dba Kc Mosier Co · NSN 2990-01-136-7083 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-136-7083 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-136-7083. Primary manufacturer part number: EM1.
Features
  • Muffler,exhaust — FSC 2990
  • Inlet Thread Location: EXTERNAL SINGLE INLET
  • Material: STEEL LOCATION NOT OTHERWISE SPECIFIED
  • Inlet Thread Series Designator: NPT SINGLE INLET
  • Coolant Type: AIR
  • Design Type: DRY
  • Operating Position: UNIVERSAL
  • Inlet Connection Type: THREADED SINGLE INLET
Applications
  • Applications requiring Steel Location Not Otherwise Specified construction
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-01-136-7083, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Mosier Fluid Power of Ohio Inc Dba Kc Mosier Co. Government technical data includes 8 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2990-01-136-7083
Primary Part NumberEM1
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerMosier Fluid Power of Ohio Inc Dba Kc Mosier Co
StatusACTIVE
Inlet Thread LocationEXTERNAL SINGLE INLET
MaterialSTEEL LOCATION NOT OTHERWISE SPECIFIED
Inlet Thread Series DesignatorNPT SINGLE INLET
Coolant TypeAIR
Design TypeDRY
Operating PositionUNIVERSAL
Inlet Connection TypeTHREADED SINGLE INLET
Inlet LocationCENTRALLY LOCATED IN END SECTION OF BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
8415-01-344-8703EM-1 INTERCHANGEABLE
EAR Muffs,helmet
Sirchie Acquisition Co Llc
6530-01-470-4005EM-1 INTERCHANGEABLE
Head Cradle
Ems Innovations Inc.
3110-01-494-3086NJ2308E.M1 INTERCHANGEABLE
Bearing,roller,cylindrical
Gwilliam Company, Inc. Div Ball & Roller Bearing Division
5840-01-579-7784 INTERCHANGEABLE
Interface Unit,environmental Sen
4820-01-716-9083 INTERCHANGEABLE
Cock,poppet Drain
Cross-Reference Index
Part NumberManufacturer
EM1 PRIMARY Mosier Fluid Power of Ohio Inc Dba Kc Mosier Co (USA)
Related Parts
8415-01-344-8703INTERCHANGEABLE
EAR MUFFS,HELMET
EM-1
6530-01-470-4005INTERCHANGEABLE
HEAD CRADLE
EM-1
3110-01-494-3086INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
NJ2308E.M1
5840-01-579-7784INTERCHANGEABLE
INTERFACE UNIT,ENVIRONMENTAL SEN
4820-01-716-9083INTERCHANGEABLE
COCK,POPPET DRAIN

Frequently Asked Questions

What is NSN 2990-01-136-7083?

NSN 2990-01-136-7083 is a Muffler,exhaust, manufactured by Mosier Fluid Power of Ohio Inc Dba Kc Mosier Co, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-01-136-7083?

NSN 2990-01-136-7083 has 1 cross-referenced part number: EM1 (Mosier Fluid Power of Ohio Inc Dba Kc Mosier Co).

What NSN replaces 2990-01-136-7083?

There are 5 known substitutes for 2990-01-136-7083: 8415-01-344-8703, 6530-01-470-4005, 3110-01-494-3086 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of EM1?

Key specifications for EM1: Inlet Thread Location: EXTERNAL SINGLE INLET; Material: STEEL LOCATION NOT OTHERWISE SPECIFIED; Inlet Thread Series Designator: NPT SINGLE INLET; Coolant Type: AIR. 12 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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