Established in 1939 and based in South Bend, Indiana, ABRO Industries has built its legacy on delivering dependable, value-driven products across automotive, hardware, and household categories. From engine and fuel additives to air fresheners, cleaners, sealants, and masking tapes, ABRO’s portfolio is designed for professionals and consumers who expect both performance and consistency.

For nearly three-quarters of a century, ABRO has upheld a steadfast commitment to quality. Its world headquarters in Indiana centralizes operations—bringing together logistics, sales teams, design specialists, and brand stewards—to ensure product excellence and brand integrity. ABRO’s expansive global distribution network operates through independently-owned distributors in over 175 countries, enabling its solutions to reach every corner of the world with American roots and global impact.

With a product lineup that supports mechanics, DIYers, fleet operators, and homeowner maintenance alike—and a reputation built on trust and durability—ABRO continues to stand as a truly Made-in-USA innovator with worldwide influence.

ABRO Stop Leak Powder (AB‑404) provides a fast, easy solution to minor radiator or heater core leaks—just pour into the cooling system or overflow tank without draining. It forms a protective barrier that seals pinhole leaks, lubricates water pumps, and inhibits corrosion. Formulated and manufactured by ABRO Industries in South Bend, Indiana, USA. Ideal for emergency fixes or preventive maintenance in older or high‑mileage cooling systems.

ABRO Stop Leak Powder

Fillers, Adhesives & Sealants

Sealants

Radiator sealant powder designed to stop pinhole leaks and prevent coolant seepage quickly and easily.

ABRO Stop Leak Powder

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