The Speedflow 819-16 -16AN 1" Tube Sleeve is designed for large diameter hardline AN plumbing where maximum flow and secure sealing are essential. Used with compatible -16AN tube nuts, it ensures proper sealing on flared 1" tube in high-capacity fuel, oil and coolant systems. Ideal for extreme horsepower builds, dry sump systems and motorsport applications requiring reliable, high-flow hardline connections. Features Suits -16AN fittings Designed for 1" OD hardline tube Precision machined for secure sealing Compatible with Speedflow -16AN tube nuts Suitable for high-flow fuel, oil and coolant systems Lightweight and corrosion-resistant construction Typical Applications Extreme high-flow fuel systems Dry sump oil plumbing Large bore coolant and water lines Turbo and engine bay hardline fabrication Street, drag and motorsport vehicles Fitment Notes Designed for use with 1" OD tube Must be paired with compatible -16AN tube nut Correct tube flaring required prior to installation Not suitable for flexible hose assemblies
