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16601836 - Tweco 66J3 Nozzle Insulator for Spray Master 450 MIG Guns

Packaging: 1 per each
$31.23/ea $21.96/1 per each only $21.96/eaSave 30%

In stock

SKU: TWE1660-1836 Categories: ,

OVERVIEW

Genuine Tweco 66J3 Nozzle Insulator for Spray Master 450

The Tweco 1660-1836, commonly referred to by its industry-standard part number 66J3, is a specialized nozzle insulator engineered specifically for the Tweco Spray Master 450 Amp MIG gun series. As a critical component in the front-end assembly of high-amperage welding torches, this insulator plays a vital role in maintaining the structural and electrical integrity of the gun during operation. Manufactured by Tweco, a leader in arc welding products, this OEM part ensures that users receive the exact specifications required for their equipment, avoiding the fitment issues often associated with generic alternatives.

This insulator is designed to sit securely between the gas diffuser and the outer nozzle. Its primary function is to electrically isolate the electrically

Additional Information
Item:Insulator, Nozzle
Amps:450amp
Fits Which Model:Spray Master 450
Part Number:1660-1836, 66J3
Torch Type:MIG
Material:High-Temperature Composite
----- new values below ----
Part Number:66J3, 1660-1836
Torch Type:MIG
Material:High-Temperature Composite
Brand:Tweco
Item:Insulator
Amps:450amp
Fits Which Model:Spray Master 450

INCLUDED

  • 1 x Tweco 66J3 Nozzle Insulator (1660-1836)

APPLICATIONS

  • Heavy-duty industrial MIG welding
  • Structural steel fabrication
  • Shipbuilding and marine repair
  • Automotive and transportation manufacturing
  • General fabrication and repair shops using Spray Master 450 guns

FAQ

The 66J3 insulator is designed specifically for the Tweco Spray Master 450 Amp MIG gun series.

The official Tweco part number is 1660-1836, but it is commonly referred to as the 66J3.

It electrically insulates the nozzle from the live contact tip and gas diffuser, preventing short circuits and arcing within the nozzle.

Yes, this is a genuine Tweco Original Equipment Manufacturer part, ensuring perfect fit and performance.

No, the Spray Master 250 typically uses a different insulator (often the 34A). The 66J3 is sized for the larger 450 Amp guns.

You should replace the insulator whenever it shows signs of cracking, excessive wear, or heat damage, or if it no longer stays securely in place.

It is manufactured from a high-temperature composite material designed to resist the high heat and spatter of heavy-duty welding.

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