NSN catalog · 90,963 partsCatalog › Engine Accessories › FSC 2990 › 2990-00-734-8829
Exhaust Muffler P/N 99957R91
In stock — 13 on our U.S. shelfNSN 2990-00-734-8829 2990007348829 NIIN 007348829
SECO Parts has 13 in stock of NSN 2990-00-734-8829 — Exhaust Muffler — on our own shelf in Augusta, GA: a stocking supplier, not a broker. Government catalog (FEDLOG) price: $294.04 per each — a public reference, not our price. We quote each request, usually the same business day, and surplus parts often quote below or above it.
One part, one step — answered within one business day. Several parts? and send them together.
- Ships in 1–3 business days from Augusta, GA
- Certificate of Conformance on request
- PO, GPC & major cards
- $50 minimum order — smaller requests still get a quote
- 30-day returns · terms
- FLIS item name
- MUFFLER,EXHAUST
- SECO description
- MUFFLER ASSY.
- Federal supply class
- FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft
Availability & condition
| Condition | Code | Qty on shelf |
|---|---|---|
| As Removed | AR | 6 |
| New Surplus | NS | 6 |
| Serviceable | SV | 1 |
| Total | 13 |
Quantities are live from SECO's inventory system, not estimated.
Also known as:
2990-00-734-8829 007348829 99957R91 7348829 T3833 T3412
Get a quote
Build a list across as many parts as you need, send it once, get one quote back — answered within one business day, usually the same day. POs and GPC welcome. $50 minimum order.
More to tell us? Need-by date, ship-to, your own RFQ document
Specifications
- Body shape
- Round
- Outlet inside diameter
- First Outlet Inches Nominal 3.000
- Inlet inside diameter
- Single Inlet Inches Nominal 4.000
- Outlet location
- Located 5/16 In. BY 1 In. From Center of Body First Outlet
- Operating position
- Horizontal
- Center to center distance between mounting holes
- 3/8 In.,Porm .010,Dia Bolt Circle
- Design type
- Dry
- Coolant type
- Air
- Inlet outside diameter
- Single Inlet Inches Nominal 4.120
- Inlet connection type
- First Inlet Unthreaded
- Inlet connection type
- Second Inlet Flange
- Overall diameter
- 8.093–8.593 in
- Inlet flange shape
- Single Inlet Round
- Inlet flange mounting provision and quantity
- Single Inlet Holes 4
- Inlet flange mounting hole diameter
- Single Inlet Inches Minimum 0.438 and Inches Maximum 0.469
- Inlet flange mounting provision spacing
- 5 3/8 In.,Porm .010,Dia Bolt Circle Single Inlet
- Inlet location
- Located 5/16 In. BY 1 In. From Center of Body Single Inlet
- Outlet flange mounting provision spacing
- 5 In.,Porm 0.010,Dia Bolt Circle First Outlet
- Outlet outside diameter
- First Outlet Inches Nominal 3.120
- Material
- Location Not Otherwise Specified Steel
- Surface treatment
- Aluminum
- Fsc application data
- Nonaircraft Engine
- Muffler design
- Straight Through
- Tube quantity
- 1
- Outlet flange shape
- First Outlet Triangular
- Inlet projection length
- Single Inlet Inches Minimum 2.937 and Inches Maximum 3.063
- Overall length
- 21.375–21.625 in
- Outlet flange mounting provision and quantity
- First Outlet Holes 3
- Outlet flange mounting hole diameter
- First Outlet Inches Minimum 0.438 and Inches Maximum 0.938
- Outlet projection length
- First Outlet Inches Minimum 3.937 and Inches Maximum 4.063
From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.
Cross-reference part numbers
99957R91 7348829 T3833 T3412
Shown for identification only. SECO can quote against any of these numbers.
Logistics data
| Source of supply | SMS DLA Land and Maritime, Columbus, Ohio |
| Acquisition advice code | J Not stocked, centrally procured — the government does not stock this item; it is procured only when a requisition arrives. SECO has 13 on the shelf |
| Unit of issue | EA each |
| Demilitarization code | A Demilitarization not required — non-munitions-list item |
| Controlled inventory code | U Unclassified |
| Hazardous material indicator | N No hazardous material |
Source: public FLIS/PUB LOG cataloging data.
Why buy from SECO
These quantities sit on our own shelves — we are a stocking supplier, not a broker sourcing after you order. Condition-coded stock, formal quotes with NSN/PN on the paperwork, POs and GPC welcome, fast U.S. shipping.
In business since 1951 · 30,000+ contracts completed · about SECO & our policies · more questions answered
FAQ
What is NSN 2990-00-734-8829?
NSN 2990-00-734-8829 (2990007348829) — Exhaust Muffler: SECO Parts has 13 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for exhaust muffler in federal supply class 2990 (Miscellaneous Engine Accessories, Nonaircraft).
Is NSN 2990-00-734-8829 available?
SECO Parts has 13 in stock in Augusta, GA — order or request a quote below.
How much does NSN 2990-00-734-8829 cost?
The government catalog (FEDLOG) lists NSN 2990-00-734-8829 at $294.04 per each. That is a public reference, not SECO's price: SECO quotes each request, usually the same business day, and surplus parts often quote below or above it.
What part numbers cross-reference to NSN 2990-00-734-8829?
Part numbers that cross-reference this NSN include 99957R91, 7348829, T3833, T3412. SECO can quote against any of them.
Same item, other stock numbers
Other NSNs the federal catalog names MUFFLER,EXHAUST. Same name is not the same part: check the part numbers.