Earl's Performance Aluminum AN to Metric Bump O-Ring Adapters

Earl's Performance Aluminum AN to Metric Bump O-Ring Adapters are precision-engineered fittings designed to bridge AN flare hose ends with metric-threaded ports found on OEM and aftermarket components. Whether plumbing fuel systems, power steering circuits, oil lines, or fuel injection setups, these adapters deliver the reliable, leak-free performance that Earl's has been synonymous with since 1955.

Key Features:

• Bump O-Ring Seal Design — Provides a positive, leak-free seal against metric-ported surfaces, eliminating the seepage risk associated with thread-only connections
• Lightweight Aluminum Construction — Precision-machined from 6061 aluminum for an ideal balance of strength, corrosion resistance, and weight savings critical in performance builds
• AN to Metric Compatibility — Solves the common challenge of connecting AN hose lines to metric-threaded components found on fuel pumps, power steering units, carburetors, and fuel injection systems
• Anodized Finish — Hard anodized coating penetrates the aluminum for enhanced wear and corrosion resistance, outlasting traditional anodized fittings
• Made in the USA — Manufactured to Earl's strict quality control standards for professional-grade reliability
• Wide Range of Configurations — Available in multiple AN sizes, metric thread combinations, and finishes to suit virtually any custom plumbing layout or application
• Emissions Compliant — Legal for use on emissions-controlled, non-emissions-controlled, and racing-only vehicles

Trusted by Racers, Built for Enthusiasts

Founded in 1955, Earl's Performance Plumbing has been a cornerstone of the automotive performance and professional racing industries, offering the most extensive line of fluid transfer products available. These AN to Metric Bump O-Ring Adapters are ideal wherever AN hose ends must interface with metric-ported blocks, pumps, or manifolds — including fuel systems, oil circuits, power steering plumbing, and fuel injection builds. Select the correct thread configuration and finish for your specific application from the available variants.