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3120 Enterprise St.
Brea, CA 92821
United States

Proponent is the world’s largest independent distributor of commercial aircraft parts, serving the MRO, OEM, and airline markets. With more than 600 employees at 11 facilities worldwide, we think and operate on the global scale of aerospace.

Modern aircraft are some of the most complex machines ever engineered, with millions of components from countless suppliers. With nearly 50 years of experience, we work to simplify your aftermarket needs with fast, reliable delivery of critical parts, and custom solutions to improve overall efficiency. We are committed to contributing to the success of our customers and suppliers. We work to address your unique business challenges and goals with unmatched agility and industry-leading customer service.

Proponent Parts Distribution

A Partner That's Fast, Easy, and Reliable