As with any rubber hose below waterline, the PSS bellows must be inspected on a regular basis for any sign of wear, aging or chemical deterioration. The PSS bellow, O-rings & set screws should be replaced in six year intervals. Bellows may need to be more frequently inspected in an environment where non-sealed batteries emit sulfuric acid. Sulfuric acid vapor will accelerate rubber deterioration, as will an ozonater.
Includes (1) Bellow, (2) o-rings, (5) Set screws, (4) Hose clamps, (1) Tube of thread lock, (1) Allen key Shaft 7/8" Stern-Tube Dia. 1.5" - 1.75"