PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NW21663Gage Unit,engine

Tld Wollard Llc · NSN 6620-01-310-6653 · FSC 6620 · No Item Name Available
Verified by PartsTable
NSN 6620-01-310-6653 — this item is cataloged by the U.S. Government under National Stock Number 6620-01-310-6653. Primary manufacturer part number: NW21663.
Features
  • Gage Unit,engine — FSC 6620
  • 2 verified cross-references
  • Primary manufacturer: Tld Wollard Llc
Applications
  • Mechanical power generation
  • Drive system operation
  • Auxiliary equipment operation
General Description

The Gage Unit,engine, cataloged under National Stock Number 6620-01-310-6653, is classified within Federal Supply Class 6620 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Tld Wollard Llc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6620-01-310-6653
Primary Part NumberNW21663
Item NameGage Unit,engine
FSC / FSG6620 / 66 — No Item Name Available
ManufacturerTld Wollard Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4320-00-163-107399121663 INTERCHANGEABLE
Pump,rotary
Alfa Laval Inc
5330-00-297-733121663 INTERCHANGEABLE
Gasket
Arvinmeritor Inc
2530-00-426-83682-1663 INTERCHANGEABLE
Adjuster,slack,brake
Terex Usa, Llc Dba Terex Equipment Services
5935-00-563-1430 INTERCHANGEABLE
Connector,plug,electrical
5305-01-188-049221663 INTERCHANGEABLE
Screw Assy. Vent
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
2530-01-265-324921239 INTERCHANGEABLE
Cylinder Assembly,actuating,line
Mark Industries
Cross-Reference Index
Part NumberManufacturer
21663 Tld Wollard Llc (USA)
NW21663 PRIMARY Tld Wollard Llc (USA)
Related Parts
4320-00-163-1073INTERCHANGEABLE
PUMP,ROTARY
99121663
5330-00-297-7331INTERCHANGEABLE
GASKET
21663
2530-00-426-8368INTERCHANGEABLE
ADJUSTER,SLACK,BRAKE
2-1663
5935-00-563-1430INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5305-01-188-0492INTERCHANGEABLE
SCREW ASSY. VENT
21663
2530-01-265-3249INTERCHANGEABLE
CYLINDER ASSEMBLY,ACTUATING,LINE
21239

Frequently Asked Questions

What is NSN 6620-01-310-6653?

NSN 6620-01-310-6653 is a Gage Unit,engine, manufactured by Tld Wollard Llc, classified under FSC 6620 (No Item Name Available). Status: active.

What are the part numbers for NSN 6620-01-310-6653?

NSN 6620-01-310-6653 has 2 cross-referenced part numbers: 21663 (Tld Wollard Llc), NW21663 (Tld Wollard Llc).

What NSN replaces 6620-01-310-6653?

There are 6 known substitutes for 6620-01-310-6653: 4320-00-163-1073, 5330-00-297-7331, 2530-00-426-8368 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NW21663?

Key specifications for NW21663: End Item Identification: WAREHOUSE TOW TRACTOR MODEL JG40PT15. 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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