Return header manifold for all Astralpool HiNRG gas heaters. Includes the 78661 manifold, 78665 end cap, nut, and bypass assembly. Manifolds should be inspected annually, and tube seals replaced when necessary. Also suits some North American Jacuzzi gas pool and spa heaters.
Note: 78661 is just one component of the 726055b assembly
78661, 726066, 78665, 726055,726055b