Single Piece Service Part: Includes 1 fitting for targeted replacement work, with pending 3/4 x 5/8 and 800419 references reserved for buyers who verify exact service specs before installation Defined Repair Part: This metal heater hose fitting is built for heater hose repair and HVAC coolant line replacement, helping buyers identify the correct elbow fitting before service begins Metal Upgrade Direction: The aluminum alloy body replaces worn fittings with a more heat ready structure, giving vehicle owners a practical repair option for aging hose joints Selected Application Use: Built for selected vehicle applications in heater hose repair work, this fitting keeps the fitment message narrow and supports buyers shopping by repair task Visible Elbow Design: The 90 degree elbow and quick coupling opening are easy to compare with a worn part during heater hose repair, helping buyers confirm shape before coolant line service, Manufacturer: Limtula