Hayward TriVac 500/700 Side Roller Kit (TVX7036-234) marlig A header assembly like this

A header assembly like this is useful because it helps maintain the water pathway through the heater while supporting the overall structure of the front section

and application location before ordering

Installing the correct Pentair diffuser can help restore internal hydraulic performance and improve the quality of the wet-end rebuild

2 inch by 2 inch connection format supports intended fit

Hayward TriVac 500/700 Side Roller Kit (TVX7036-234) marlig A header assembly like thisSide rollers help the Hayward TriVac cleaner move smoothly while protecting the cleaner body as it navigates pool surfaces. This kit is intended for compatible TriVac 500 and 700 models and helps refresh a high contact wear area. Worn rollers can affect tracking, handling, or surface contact. Replacing them can help maintain cleaner mobility and reduce unnecessary strain on surrounding components.