The Derale Performance Aluminum Cooler/Adapter Fitting is designed to provide a secure and reliable connection between -6AN hose ends and 5/8"-18 O-ring ports. Built for performance cooling applications, this male adapter fitting offers a precise fit that helps simplify plumbing in transmission cooler, engine oil cooler, and other fluid transfer systems where dependable sealing is essential. Sold individually, it is a practical choice for custom installs, repairs, or upgrades.

Manufactured from 6061 aluminum, this fitting combines strength with lightweight construction for long-term durability in demanding environments. The black anodized finish adds corrosion resistance while delivering a clean, professional appearance that suits a wide range of engine bay setups. Its 37 degree sealing angle is engineered to ensure a positive seal, helping reduce the risk of leaks and supporting consistent fluid flow under pressure.

Whether you are completing a new cooling system installation or replacing a worn adapter, this fitting is designed to provide a high quality connection point with the performance characteristics enthusiasts expect. Its compact design and precise machining make it suitable for custom automotive plumbing applications where reliability and fitment matter most.

Features & Benefits

• -6AN male adapter to 5/8"-18 O-ring configuration for compatible cooling applications
• 37 degree sealing angle helps deliver a positive, leak resistant seal
• Constructed from durable 6061 aluminum for strength and lightweight performance
• Black anodized finish provides added corrosion resistance and a refined look
• Ideal for transmission cooler, oil cooler, and custom fluid line installations
• Sold individually for convenient replacement or custom build use