PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66881Gear Assy,tachometer

Textron Lycoming Inc Williamsport Plant · NSN 2810-00-084-4908 · FSC 2810 · No Item Name Available
Verified by PartsTable
NSN 2810-00-084-4908 — this item is cataloged by the U.S. Government under National Stock Number 2810-00-084-4908. Primary manufacturer part number: 66881.
Features
  • Gear Assy,tachometer — FSC 2810
  • 1 verified cross-reference
  • Primary manufacturer: Textron Lycoming Inc Williamsport Plant
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Gear Assy,tachometer, cataloged under National Stock Number 2810-00-084-4908, is classified within Federal Supply Class 2810 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Textron Lycoming Inc Williamsport Plant. This item has 1 commercial cross-reference 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.

Technical Specifications
ParameterValue
NSN2810-00-084-4908
Primary Part Number66881
Item NameGear Assy,tachometer
FSC / FSG2810 / 28 — No Item Name Available
ManufacturerTextron Lycoming Inc Williamsport Plant
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4720-00-544-138166881 INTERCHANGEABLE
Hose,nonmetallic
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
6150-00-604-8719443489-00 INTERCHANGEABLE
Lead Assembly,electrical
Ametek Inc Div Aerospace and Defense
5330-00-808-426366881 INTERCHANGEABLE
Gasket
Cummins Inc.
Cross-Reference Index
Part NumberManufacturer
66881 PRIMARY Textron Lycoming Inc Williamsport Plant (USA)
Related Parts
4720-00-544-1381INTERCHANGEABLE
HOSE,NONMETALLIC
66881
6150-00-604-8719INTERCHANGEABLE
LEAD ASSEMBLY,ELECTRICAL
443489-00
5330-00-808-4263INTERCHANGEABLE
GASKET
66881

Frequently Asked Questions

What is NSN 2810-00-084-4908?

NSN 2810-00-084-4908 is a Gear Assy,tachometer, manufactured by Textron Lycoming Inc Williamsport Plant, classified under FSC 2810 (No Item Name Available). Status: active.

What are the part numbers for NSN 2810-00-084-4908?

NSN 2810-00-084-4908 has 1 cross-referenced part number: 66881 (Textron Lycoming Inc Williamsport Plant).

What NSN replaces 2810-00-084-4908?

There are 3 known substitutes for 2810-00-084-4908: 4720-00-544-1381, 6150-00-604-8719, 5330-00-808-4263. Verify interchangeability with system specifications before substitution.

What are the specifications of 66881?

Key specifications for 66881: End Item Identification: ACFT ENG G0480. 1 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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