Weld-Through Primer Guidelines: Hyundai
Weld-through primers are generally a zinc-based product that are applied to the mating surfaces prior to welding. Corroding zinc forms zinc oxide which protects the steel. This is called sacrificial corrosion. For a quality weld to be made it’s required that the weld-through primer be removed from the direct weld zone before welding the joint when GMA welding. Many OEMs have a position on when and how to use weld-through primer or when it shouldn’t be utilized. Let’s see what Hyundai recommends and where this information can be found.
Information can be found within the vehicle-specific body repair manual (BRM). Hyundai calls out the use of weld-through primer within replacement or sectioning procedures. These procedures are under Body Repair ➤ Body Repair Manual ➤ Body Panel Repair Procedure.
Per a 2025 Hyundai Kona (SX2) Quarter Panel > Repair Procedures: "Apply the zinc corrosion inhibitor, for areas where the epoxy adhesive cannot be applied."
Per 2022 Hyundai Sonata (DN8A) Quarter Panel > Repair Procedures: "Apply zinc corrosion inhibitor for welding."
Hyundai recommends applying weld-through primer (zinc corrosion inhibitor) for welding in most part replacement procedures. Hyundai does not recommend a specific brand of weld-through primer.
Use the vehicle-specific BRM to determine which type of welding is required for the repair you are performing. Failure to follow OEM procedures sacrifices the safety and quality of the repair.
For additional Hyundai information, check out the Hyundai OEM Information page.
Additional I-CAR Collision Repair News you may find helpful:
- Step-By-Step: Accessing Hyundai Repair Information
- Weld-Through Primer Guidelines
- Welding And MIG Brazing Hotspot
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