About The Seller

Parts Matrix is a trusted eBay Motors seller specializing in premium aftermarket and OEM replacement auto parts. We serve DIY mechanics, professional installers, and truck enthusiasts who demand dependable brake, steering, suspension, and performance components at competitive prices.As a customer-focused seller, we prioritize accurate listings, fast order processing, and secure packaging to ensure your parts arrive safely and on time. We maintain strong supplier relationships so you can shop confidently knowing you’re receiving quality components backed by responsive support. If you have a fitment question before ordering, send us a message — we’re happy to verify compatibility to help you avoid returns and downtime.We ship quickly within the United States and also offer international shipping. International buyers are welcome to contact us for shipping rate details or assistance before purchasing.Important Fitment & Compliance Information- Always confirm vehicle compatibility using the eBay Motors fitment tool and match the manufacturer part number when possible.- Some vehicles have multiple trim levels, production dates, or brake/suspension configurations — verify before ordering.- Professional installation is recommended for safety-related components.- Emissions-related parts that are not CARB compliant cannot be shipped to California or other CARB-compliant states. Please review your state’s emissions regulations prior to purchase.- Returns must comply with our eBay return policy and items must be in new, uninstalled condition unless otherwise stated in the listing.At Parts Matrix, we’re committed to delivering quality auto parts, clear communication, fast shipping, and a buying experience that earns repeat customers.
    
        
ABOUT THE BRAND
        Since 2010, Radium Engineering's goal has been to simply design and produce high quality aftermarket automotive performance products. Radium Engineering relies on a core team with a passion for innovation to lead the company toward advancement in the industry.

All Radium products are carefully planned with thorough R&D and designed in-house using the latest computer simulation and modeling techniques. Extensive testing and evaluation ensures the performance of Radium products exceed consumer expectations. For these reasons, top motorsports competitors and enthusiasts worldwide rely on Radium Engineering products.  

Currently, Radium offers an expanding collection of motorsport parts and accessories for high performance and racing, focusing on their revolutionary fuel surge tank line and PCV oil catch can systems. A growing collection of application specific parts are also being created. Please contact Radium Engineering for more information.