What wire size and gun model is the MK Products Spiral Steel Barrel Liner 7.58" - 615-0343 compatible with?

The MK Products Spiral Steel Barrel Liner 7.58" - 615-0343 is sized for the wire diameter shown in the product title/description. Liner bore must match wire diameter — an oversized liner causes wire wander, an undersized liner causes excessive friction. Replace liners when feeding becomes inconsistent, or every 3–6 months in production use. Always cut to the exact length specified for your MK gun model.

When should I replace the MK Products Spiral Steel Barrel Liner 7.58" - 615-0343?

Replace MK Products contact tips, nozzles, and liners based on condition rather than calendar schedule in low-volume shops: contact tips when bore is visibly worn oval or arc becomes unstable; nozzles when spatter buildup restricts gas flow; liners when wire feeding is inconsistent after drive roll and tension adjustments. In production environments, schedule consumable replacement at regular intervals (e.g., every 4–8 arc-hours for tips, monthly for liners).

Is the MK Products Spiral Steel Barrel Liner 7.58" - 615-0343 an OEM MK Products part?

MK Products parts are genuine OEM components for MK welding guns. OEM parts are made to the same tolerances as the original components that shipped with the gun. Aftermarket substitutes may fit physically but can vary in bore diameter, thread pitch, and conductivity — resulting in reduced tip life, arc instability, or accelerated wear of adjacent gun components.

What warranty does the MK Products Spiral Steel Barrel Liner 7.58" - 615-0343 carry?

MK Products gun consumables carry a limited warranty against manufacturing defects. Contact WeldingMart.com with your order information and a description of the defect for a warranty assessment. Normal wear and damage from overheating, bird-nesting, or improper installation are not covered under warranty.

MK Products Spiral Steel Barrel Liner 7.58" - 615-0343

SKU: 615-0343

$32.58

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The MK Products spiral steel barrel liner - 615-0343 is a professional-grade 7.58-inch component compatible with air, air/water, and water-cooled barrels. this precision engineered liner provides reliable wire feeding performance. ensures consistent operation in demanding welding environments.

Overview

MK Products Spiral Steel Barrel Liner 7.58" - 615-0343

The MK Products spiral steel barrel liner is a professional-grade component designed for multiple cooling configurations. This 7.58" liner is compatible with air-cooled, air/water-cooled, and water-cooled barrels, providing versatile application options.

Features precision engineered spiral steel construction for reliable wire feeding performance. The industrial-grade liner provides consistent operation and durability in demanding welding environments.

Note: always refer to equipment manual for proper installation procedures and maintenance guidelines.

Key features

Applications

air-cooled barrels
air/water-cooled barrels
water-cooled barrels
production welding

Technical specifications

product type: spiral steel barrel liner
part number: 615-0343
length: 7.58 inches
material: spiral steel
cooling compatibility: air, air/water, water
brand: MK Products

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