The Speedflow 819-03 -3AN 3/16" Tube Sleeve is designed for hardline installations requiring secure, leak-free AN connections. Used in conjunction with matching -3AN tube nuts, it supports proper sealing on flared tube ends in high-pressure brake, clutch and fluid systems. Precision machined for performance and motorsport applications where reliability is critical. Features Suits -3AN fittings Designed for 3/16" OD hardline tube Precision machined for secure sealing Compatible with Speedflow -3AN tube nuts Ideal for brake and clutch hydraulic systems Lightweight and corrosion-resistant construction Typical Applications Brake hardline fabrication Clutch hydraulic lines Motorsport hydraulic systems Custom fluid plumbing Street, track and race vehicle builds Fitment Notes Designed for use with 3/16" OD tube Must be paired with compatible -3AN tube nut Correct flaring of tube required before installation Not suitable for flexible hose assemblies