PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121214Breather

Dana Off Highway Products, Llc · NSN 2520-00-421-9477 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-00-421-9477 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-421-9477. Primary manufacturer part number: 121214.
Features
  • Breather — FSC 2520
  • Thread Size and Series/type Designator: 3/8-18 NPT
  • Connection Type: THREADED
  • 2 verified cross-references
  • Primary manufacturer: Dana Off Highway Products, Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Breather, cataloged under National Stock Number 2520-00-421-9477, is classified within Federal Supply Class 2520 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Dana Off Highway Products, Llc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2520-00-421-9477
Primary Part Number121214
Item NameBreather
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerDana Off Highway Products, Llc
StatusACTIVE
Thread Size and Series/type Designator3/8-18 NPT
Connection TypeTHREADED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5330-00-187-36380184-17 INTERCHANGEABLE
Packing,preformed
Northrop Grumman Systems Corporation
8115-00-409-3807S-4616 INTERCHANGEABLE
Box,shipping
Uline Inc
5360-01-133-6150121214 INTERCHANGEABLE
Spring,helical,compression
Transdigm Inc Div Aero Fluid Products
5310-01-550-1770395387A1 INTERCHANGEABLE
Washer,flat
Cnh Industrial America Llc Dba Cnh America
Cross-Reference Index
Part NumberManufacturer
121214 Clark Equipment Co (USA)
121214 PRIMARY Dana Off Highway Products, Llc (USA)
Related Parts
5330-00-187-3638INTERCHANGEABLE
PACKING,PREFORMED
0184-17
8115-00-409-3807INTERCHANGEABLE
BOX,SHIPPING
S-4616
5360-01-133-6150INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
121214
5310-01-550-1770INTERCHANGEABLE
WASHER,FLAT
395387A1

Frequently Asked Questions

What is NSN 2520-00-421-9477?

NSN 2520-00-421-9477 is a Breather, manufactured by Dana Off Highway Products, Llc, classified under FSC 2520 (No Item Name Available). Status: active.

What are the part numbers for NSN 2520-00-421-9477?

NSN 2520-00-421-9477 has 2 cross-referenced part numbers: 121214 (Clark Equipment Co), 121214 (Dana Off Highway Products, Llc).

What NSN replaces 2520-00-421-9477?

There are 4 known substitutes for 2520-00-421-9477: 5330-00-187-3638, 8115-00-409-3807, 5360-01-133-6150 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 121214?

Key specifications for 121214: Overall Length: 3.500 INCHES MAXIMUM IN; Thread Size and Series/type Designator: 3/8-18 NPT; End Item Identification: 3805-00-602-5006 AND 3805-00-602-5013; Special Features: 2.000 IN.FROM END TO THREADED PORTION 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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