PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

35581Oil Pump Assembly,engine

Westerbeke Corporation · NSN 2805-01-311-4211 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-01-311-4211 — this item is cataloged by the U.S. Government under National Stock Number 2805-01-311-4211. Primary manufacturer part number: 35581.
Features
  • Oil Pump Assembly,engine — FSC 2805
  • 2 verified cross-references
  • Primary manufacturer: Westerbeke Corporation
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Mechanical power generation
  • Drive system operation
General Description

The Oil Pump Assembly,engine, cataloged under National Stock Number 2805-01-311-4211, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Westerbeke Corporation. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameOil Pump Assembly,engine
FSC / FSG2805 — No Item Name Available (FSG 28)
ManufacturersWesterbeke Corporation (CAGE 03798)
Technical Specifications
ParameterValue
NSN2805-01-311-4211
Primary Part Number35581
Item NameOil Pump Assembly,engine
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerWesterbeke Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2540-00-609-5476035591 INTERCHANGEABLE
Pad,pedal
Caterpillar Inc Div Caterpillar Defense
5133-00-988-5691 INTERCHANGEABLE
Drill,twist
5935-01-084-573335581 INTERCHANGEABLE
Plug,telephone
Switchcraft Inc.
Cross-Reference Index
Part NumberManufacturer
35581 PRIMARY Westerbeke Corporation (USA)
035581 Westerbeke Corporation (USA)
Related Parts
2540-00-609-5476INTERCHANGEABLE
PAD,PEDAL
035591
5133-00-988-5691INTERCHANGEABLE
DRILL,TWIST
5935-01-084-5733INTERCHANGEABLE
PLUG,TELEPHONE
35581

Frequently Asked Questions

What is NSN 2805-01-311-4211?

NSN 2805-01-311-4211 is a Oil Pump Assembly,engine, manufactured by Westerbeke Corporation, classified under FSC 2805 (No Item Name Available). Status: active.

What are the part numbers for NSN 2805-01-311-4211?

NSN 2805-01-311-4211 has 2 cross-referenced part numbers: 35581 (Westerbeke Corporation), 035581 (Westerbeke Corporation).

What NSN replaces 2805-01-311-4211?

There are 3 known substitutes for 2805-01-311-4211: 2540-00-609-5476, 5133-00-988-5691, 5935-01-084-5733. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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