77-250
View detailed technical data, stock status, and sourcing information for: 77-250
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An item designed to fit over the opening of an engine exhaust pipe or muffler to prevent the entrance of rain or foreign matter into the manifold section of a reciprocating engine while not in use. It is automatically opened when the engine is started by pressure exerted from the exhaust system. It is equipped with a hinging action and may or may not have a counter weight. Excludes:cap, protective, dust and moisture seal.
w/mounting hardware special features, 2.688 inches pipe outside diameter accommodated, steel material
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Pipe Outside Diameter Accommodated
- 2.688 inches
- Special Features
- w/mounting hardware
- Material
- steel
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 2990-00-058-6567 | No Name Available | 01/01/1977 |
| 2990-00-419-9230 | No Name Available | 05/01/1977 |
| 2990-00-489-5911 | No Name Available | 03/01/1977 |
| 2990-00-497-1878 | No Name Available | 03/01/1977 |
| 2990-00-570-9404 | No Name Available | 12/01/1976 |
| 2990-00-630-0053 | No Name Available | 02/01/1978 |
| 2990-00-813-8208 | No Name Available | 08/30/1972 |
| 2990-00-821-2063 | No Name Available | 05/01/1977 |
| 2990-00-891-6784 | No Name Available | 08/30/1972 |
| 2990-00-920-0942 | No Name Available | 08/30/1972 |
| 2990-00-927-4217 | No Name Available | 03/01/1977 |
| 2990-00-947-6064 | No Name Available | 01/01/1977 |
| 2990-01-480-9201 | No Name Available | 07/01/2019 |
Related Parts
This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:
| Part Number | Name |
|---|---|
| 11007SIZE6 | Muffler- Protective Cap Assembly |
| 13217E0544 | Muffler- Protective Cap Assembly |
| 13217E0544-2 | Muffler- Protective Cap Assembly |
| 283280R91 | Muffler- Protective Cap Assembly |
| 321574R91 | Muffler- Protective Cap Assembly |
| 538454 | Muffler- Protective Cap Assembly |
| 538800-2 | Muffler- Protective Cap Assembly |
| 565317 | Muffler- Protective Cap Assembly |
| 64180M91 | Muffler- Protective Cap Assembly |
| 66C43118 | Muffler- Protective Cap Assembly |
| 71277-7 | Muffler- Protective Cap Assembly |
| 764180M91 | Muffler- Protective Cap Assembly |
| 77-250 | Muffler- Protective Cap Assembly |
| 7X | Muffler- Protective Cap Assembly |
| C4-30 | Muffler- Protective Cap Assembly |
| D28028 | Muffler- Protective Cap Assembly |
| FB0019 | Muffler- Protective Cap Assembly |
| P27-0534 | Muffler- Protective Cap Assembly |
| Q88-29 | Muffler- Protective Cap Assembly |
| RC-250 | Muffler- Protective Cap Assembly |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 2990-00-122-0658?
Does the NSN 2990-00-122-0658 have a Schedule B code assigned?
Does NSN 2990-00-122-0658 require demilitarization?
Does NSN 2990-00-122-0658 contain precious materials?
Does NSN 2990-00-122-0658 contain hazardous materials?
When the NSN 2990-00-122-0658 was assigned to the Federal Catalog?
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