Brake Fitting #4 90 1/8NPT Long

The Longacre Brake Fitting #4 90 1/8NPT Long (MPN 52-45220) is a 90-degree adapter fitting designed to connect 4 AN (AN4) male brake lines to 1/8-inch NPT male ports. Constructed from steel with cadmium plating, this adapter is engineered for hydraulic brake systems found in racing vehicles, high-performance street cars, and competition off-road platforms where precise fluid routing and leak-free connections are non-negotiable.

The 90-degree configuration allows brake lines to exit perpendicular to the port, critical for packaging in tight engine bays or custom installations where straight runs are impossible. The cadmium finish provides corrosion resistance in salt-air environments and extends service life under extreme thermal cycling typical of track duty and sustained high-performance driving. AN4 fittings maintain industry-standard compatibility with braided steel and PTFE brake lines, while the 1/8-inch NPT connection accommodates master cylinders, proportioning valves, and ABS modules from leading manufacturers. The long body length offers additional clearance in congested mounting areas where standard adapters would interfere with adjacent components.

This fitting serves motorsports enthusiasts, race teams, and fabricators building custom hydraulic brake systems. It is equally suited for restoration work on vintage competition vehicles, off-road race rigs requiring modular brake routing, and custom automotive builds where OEM brake port locations demand adapter solutions. A single unit allows spot replacement without system overhaul, reducing downtime during maintenance or system reconfiguration.

Longacre has established itself as a trusted supplier of brake system components and performance hydraulic fittings in the racing industry. AN-fitting adapters are fundamental to professional and amateur motorsports builds, where reliability under pressure literally determines safety and competitive performance.