Keep your Level Up Towable hydraulic leveling system leak-free and fully operational with this OEM-spec replacement straight fitting. The Lippert 139417 connects 1/4" hydraulic lines with a Male SAE ORB (O-ring Boss) on one end and a Male JIC 37-degree flare on the other -- exactly the configuration used at key junction points throughout the Level Up Towable system.
Hydraulic fittings in a leveling system take constant pressure cycling every time you deploy and retract your jacks. A single weeping fitting can drain fluid, introduce air into the system, and cause slow or uneven leveling. Replacing a damaged or leaking fitting with the correct OEM-spec part -- the right thread form, the right flare angle, the right length -- is the fastest way to restore reliable performance.
The Lippert 139417 is a long-body straight fitting designed specifically for the Level Up Towable hydraulic leveling platform used on fifth-wheels, travel trailers, and toy haulers. Its 2.08" overall length provides the clearance needed in tight hydraulic line routing common in Keystone-built and Lippert-equipped units.
End 1 is 1/4" Male SAE ORB (O-ring Boss, rigid) for a leak-free, pressure-rated seal. End 2 is 1/4" Male JIC 37-degree flare -- the industry-standard hydraulic flare connection.
At 2.08" overall length, this fitting provides the necessary reach for routed hydraulic lines without requiring additional adapters or extensions.
Matches Lippert industry number 6400-L-04-04 and Keystone part number 308448, so it drops in without modification on compatible Level Up Towable systems.
Proper fitting replacement prevents fluid loss, air intrusion, and pressure drop -- the most common causes of sluggish or incomplete jack deployment on Level Up systems.
This fitting carries Lippert industry number 6400-L-04-04 and is listed under Keystone part number 308448. If you pulled either of those numbers from your system schematic or parts list, this is the correct replacement.
SAE O-ring Boss (ORB) fittings seal on a soft O-ring at the port face, making them highly reliable in high-pressure hydraulic circuits. JIC 37-degree flare fittings seal on a metal-to-metal cone -- common on hydraulic hose ends. Using a fitting with the correct thread form and sealing method on each end is critical; substituting NPT or NPSM threads will result in leaks or stripped ports.
This fitting is designed for the Level Up Towable hydraulic leveling system. Lippert also manufactures the Level Up Motorized (motor-driven, not hydraulic) and other slide-out/leveling platforms. Check your system's fluid reservoir, pump, and hose routing -- if your system uses hydraulic fluid and operates towable jacks, this fitting applies. If you are unsure, locate the Lippert data tag on your pump unit or cross-reference against your coach's parts schematic using part number 308448 (Keystone) or 6400-L-04-04 (industry).