Metal Prep Quart

Metal Prep Quart by POR-15 is a professional-grade surface preparation cleaner engineered for serious automotive restoration and modification work. Whether you're stripping rust, cleaning bare metal before welding, or prepping a frame for coating, this product removes oils, grease, rust scale, and mill scale in one aggressive application. Mechanics and fabricators rely on Metal Prep Quart to eliminate the labor-intensive grinding and wire-brushing that traditionally precedes metal bonding or protective finishes.

Metal Prep Quart works through rapid chemical conversion, transforming oxidized and corroded surfaces into a stable, paint-ready substrate without generating harsh fumes or requiring protective equipment beyond standard shop safety. The formula penetrates deep into rust pitting and corrosion, converting iron oxide back to bare metal or a stable conversion layer that accepts primer and topcoat adhesion immediately. A single quart covers substantial frame sections, undercarriage components, or suspension parts, making it economical for both one-off restorations and ongoing fabrication shops. The thin, penetrating consistency ensures even coverage on complex geometry, interior channels, and tight welds where mechanical abrasion cannot reach.

Professional fabricators, frame-off restoration specialists, and high-performance modification shops use Metal Prep Quart as the foundation step before applying POR-15's full coating system or any quality topcoat primer. It is compatible with bare steel, cast iron, aluminum, and most ferrous metals common in automotive restoration and custom builds. Application is straightforward: brush or spray onto clean, dry surfaces and allow the chemical reaction to complete before rinsing and drying. For maximum rust prevention on freshly prepped metal, pair this product with POR-15's topcoat products to seal the surface and prevent flash rust during storage or transit.