What does the Lincoln Magnum PRO Diffuser 350A, Thread-On (25/pack) KP2746-1-B25 do, and why does it matter for weld quality?

The gas diffuser sits between the gun neck and the contact tip, distributing shielding gas evenly around the arc. A clogged or damaged diffuser causes uneven gas flow, leading to porosity and inconsistent arc performance. Inspect and clean the diffuser ports regularly — compressed air or a diffuser cleaning tool removes spatter buildup from the gas ports.

When should I replace the Lincoln Magnum PRO Diffuser 350A, Thread-On (25/pack) KP2746-1-B25?

Replace the diffuser when: gas ports are clogged and cleaning doesn't restore even flow, the diffuser body shows cracking or arc damage, or you experience persistent porosity that consumable changes don't resolve. Diffusers last significantly longer than contact tips but should be considered a scheduled maintenance item.

What size or specification do I need for the Lincoln Magnum PRO Diffuser 350A, Thread-On (25/pack) KP2746-1-B25?

The Lincoln Magnum PRO Diffuser 350A, Thread-On (25/pack) KP2746-1-B25 is designed for use with Lincoln Electric Magnum series guns. Diffuser thread and body dimensions are gun-specific — do not substitute diffusers across different gun platforms or amperage classes, as the geometry affects both gas distribution and electrical path integrity.

Is the Lincoln Magnum PRO Diffuser 350A, Thread-On (25/pack) KP2746-1-B25 an OEM Lincoln Electric part?

The Lincoln Magnum PRO Diffuser 350A, Thread-On (25/pack) KP2746-1-B25 is an OEM Lincoln Electric part for Magnum series guns. OEM consumables maintain correct bore dimensions, thread fits, and conductivity for your gun. Third-party consumables vary in quality; using non-OEM parts in production applications may reduce tip life, increase arc instability, and can void gun warranty coverage.

What warranty does the Lincoln Magnum PRO Diffuser 350A, Thread-On (25/pack) KP2746-1-B25 carry?

The Lincoln Magnum PRO Diffuser 350A, Thread-On (25/pack) KP2746-1-B25 carries a 30 Days - Expendable Parts - Lincoln is not responsible for the replacement of any expendable part that is required due to normal wear. warranty from Lincoln Electric. As a consumable/wear component, this part is subject to normal wear exclusions. Contact WeldingMart.com or your Lincoln distributor for warranty service on defective (not worn) parts.

Lincoln Magnum PRO Diffuser 350A, Thread-On (25/pack) KP2746-1-B25

SKU: KP2746-1-B25

$261.63 ~~$381.50~~

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Thread on gas diffuser for Magnum® PRO Welding Guns rated for 350 amps. (25 diffusers/pack)

Overview

Lincoln Magnum PRO Diffuser 350A, Thread-On (25/pack) KP2746-1-B25

Lincoln's gas diffusers are designed for durability after repeated use. Compatible with Magnum PRO welding guns and expendables.

Features

Staggered Gas Holes – Prevents breakage from over-torqueing
Course Thread Design – Allows for easy removal of the nozzle after repeated use
25 diffusers/pack

Specifications

Feature	Value
Processes	Flux-Cored (FCAW) MIG (GMAW)

Includes

(25) Diffusers

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