6421971

View detailed technical data, stock status, and sourcing information for: 6421971

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6421971
Federal Supply Group
Engine Accessories
National Stock Number
2990-00-107-4025
Item Name Code
36098
Assigment Date
07/26/1968 (58 years ago)

A device designed to withdraw blow-by fumes from the engine and recirculate them into the combustion chamber. Consists of items as a plunger, spring, body and the like. Excludes:valve (1), air pressure relief and valve safety relief.

2 connection quantity, straight design form, 2.215 inches nominal overall length, unthreaded external hose, plain connection type, 0.895 inches nominal largest outside diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Overall Length
2.215 inches nominal
Largest Outside Diameter
0.895 inches nominal
Design Form
straight
Connection Quantity
2
Connection Type
unthreaded external hose, plain
Body Material
steel

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
2805-00-848-4095 No Name Available 11/01/1983
2940-01-008-8321 No Name Available 11/01/1983

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
161832 Positive Crankcase Ventila Valve
5646228 Positive Crankcase Ventila Valve
5646286 Positive Crankcase Ventila Valve
5647228 Positive Crankcase Ventila Valve
5647362 Positive Crankcase Ventila Valve
6418439 Positive Crankcase Ventila Valve
6418440 Positive Crankcase Ventila Valve
6418526 Positive Crankcase Ventila Valve
6418753 Positive Crankcase Ventila Valve
6418754 Positive Crankcase Ventila Valve
6419534 Positive Crankcase Ventila Valve
6420192 Positive Crankcase Ventila Valve
6420411 Positive Crankcase Ventila Valve
6420876 Positive Crankcase Ventila Valve
6421131 Positive Crankcase Ventila Valve
6421971 Positive Crankcase Ventila Valve
6421972 Positive Crankcase Ventila Valve
6484848 Positive Crankcase Ventila Valve
6487503 Positive Crankcase Ventila Valve
CV609C Positive Crankcase Ventila Valve
FV111 Positive Crankcase Ventila Valve
PCV281 Positive Crankcase Ventila Valve
PV-612 Positive Crankcase Ventila Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 2990-00-107-4025?
The FSCG of the NSN 2990-00-107-4025 is 2990
Does the NSN 2990-00-107-4025 have a Schedule B code assigned?
Yes, the Schedule B code is 8481809050
Does NSN 2990-00-107-4025 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 2990-00-107-4025 contain precious materials?
Item does not contain precious metal.
Does NSN 2990-00-107-4025 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 2990-00-107-4025 was assigned to the Federal Catalog?
It was assigned 58 years ago, on Fri, Jul 26, 1968

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