SKU: EAR989532ERL
UPC: 021432240383
MPN: 989532ERL
The #4 > 3/8-24 Brake Adapter from EARLS is a precision-engineered straight fitting designed to bridge two critical hydraulic or pneumatic line standards in high-performance applications. This adapter connects 4 AN male ports to 3/8-24 inverted flare female ports, making it essential for custom brake system builds, fuel line reconfiguration, and modular plumbing in racing, motorsport, and industrial equipment. Whether you're fabricating a custom brake line layout or troubleshooting a system mismatch, this adapter eliminates the need for costly component replacement by providing a reliable, code-compliant transition between incompatible fitting sizes.
Manufactured from solid steel with a zinc-plated finish, the #4 > 3/8-24 Brake Adapter resists corrosion and oxidation in harsh underhood or marine environments while maintaining structural integrity under high pressure cycles. The inverted flare female connection seats securely against conical surfaces, creating a leak-proof seal that meets or exceeds SAE standards for brake system applications. The straight design minimizes turbulence and dead zones in fluid flow, reducing heat generation and maintaining system responsiveness—critical when precision braking performance is non-negotiable. At just 0.07 lbs with compact 1.05 x 0.8 x 2.95 inch dimensions, this fitting integrates seamlessly into tight engine bays and confined plumbing spaces.
Buyers installing custom hardline brake systems, upgrading fuel delivery on carbureted engines, or retrofitting hydraulic components in classic or race vehicles will appreciate the straightforward 3/16-inch hardline compatibility and universal 4 AN standard. Installation is direct—simply thread the 3/8-24 inverted flare end into a matching female port and hand-tighten the 4 AN male connection with standard brake system wrenches. Always verify pressure ratings and fluid compatibility before final assembly, and confirm that both mating surfaces are clean and undamaged to ensure long-term reliability. This adapter is sold individually, so order the quantity needed for your complete system overhaul.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
