TechnicianVision · Knowledge base
Weld-Through Primer Guidelines: Subaru - UPDATE
I-CAR · January 29, 2025 · Subaru
Summary
Subaru does not call out the use of weld-through primer in their body repair manuals. However, starting with 2024 models, Subaru instructs technicians to apply a conductive rust preventive sealer (weldable seam sealer) to mating surfaces targeted for squeeze-type resistance spot welding.
What to do on the job
Do not use weld-through primer on Subaru vehicles; instead, apply a conductive rust preventive sealer to mating surfaces only when performing squeeze-type resistance spot welding on 2024 and newer models.
How to use it
Use this document to defend the exclusion of traditional weld-through primers on Subaru repairs. For 2024 and newer models, use this to justify the labor and materials required to apply a conductive rust preventive sealer/weldable seam sealer between flanges prior to squeeze-type resistance spot welding.
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