The Lippert 166078 is an OEM hydraulic header block designed to distribute hydraulic fluid from a single pump circuit to up to eight actuator lines simultaneously. Used in Lippert hydraulic slide-out and leveling systems, this manifold keeps your hydraulic plumbing organized, leak-free, and serviceable -- all from one central distribution point.
Multi-slide and multi-jack RV hydraulic systems need a reliable way to route pressurized fluid from the pump to each actuator without daisy-chaining fittings or creating potential leak points at every junction. The Lippert 166078 header block solves this by providing eight dedicated ports in a single machined manifold body, giving you clean, direct hydraulic lines to each cylinder or jack.
This is a direct OEM replacement part sourced from Lippert -- the same manufacturer that built the original system in your coach. If your header block is cracked, leaking at a port, or you are replacing it as part of a hydraulic system rebuild, part number 166078 is the correct replacement for Lippert-equipped rigs using this 8-port configuration.
Routes hydraulic fluid to up to eight individual actuator lines from one central manifold body, reducing plumbing complexity.
Direct factory replacement -- part number 166078 -- engineered to Lippert specifications for their hydraulic slide and leveling platforms.
Consolidates multiple fluid distribution points into one manifold, reducing the number of potential external leak sources in your hydraulic plumbing.
Individual ports allow targeted line replacement or cap-off without disturbing the rest of the hydraulic circuit -- useful during staged repairs.
The 166078 header block is found in Lippert hydraulic systems that power slide-out rooms and/or hydraulic leveling jacks on fifth wheels, toy haulers, and Class A motorhomes. Coaches with multiple slides typically require an 8-port block to serve each extend and retract line for up to four slide cylinders, or to distribute flow across a combination of slide and leveling jack circuits.
If your rig uses a Lippert Power Gear or HWH-style Lippert hydraulic pump station and you count eight hydraulic lines running to your slides or jacks, this is the header block those lines terminate at.
Common reasons RV owners and technicians replace the header block include:
Replacing the header block requires depressurizing the hydraulic system before disconnecting any lines. Label each hydraulic line before removal -- misrouting extend and retract lines after reinstallation will cause slides or jacks to move in the wrong direction. Have rags and a catch pan ready; residual fluid will drain when lines are disconnected.