Jandy Diffuser Kit R0479702 – With O-Ring & Hardware for ¾ HP and 1 HP Pumps
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The Jandy R0479702 Diffuser Kit is a high‑quality replacement part designed to restore optimal hydraulic performance in select ¾ HP and 1 HP pool pumps. This kit includes a precision‑engineered diffuser, a durable O‑ring, and all necessary installation hardware. Together, these components help maintain proper water direction, reduce turbulence, and support consistent pump efficiency.
Crafted to Jandy’s strict manufacturing standards, the R0479702 helps ensure reliable performance and longer component life in demanding pool environments. The kit is ideal for maintenance, service, or pump overhaul, especially when restoring flow characteristics to factory specifications.
Jandy R0479702 Diffuser Kit Compatibility
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Fits Jandy pumps equipped with compatible diffuser housing for ¾ HP and 1 HP models.
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Works with select Jandy and Zodiac/Z‑Series pool pump assemblies (verify model fitment).
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Designed as a replacement for original diffuser components in compatible pumps.
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Compatible with standard 1.5” plumbing systems used on residential pool recirculation systems.
Frequently asked questions
How do I know which O-ring or gasket size I need?
Seals are specified by inside diameter and cross-section thickness, not by the equipment they sit in. Measure the old seal, or use the part number from your equipment's parts diagram, since visually similar rings are frequently a size apart.
What is the part number for this seal?
Jandy lists this seal under part number R0479702. Quote R0479702 when you cross-reference against your equipment manual, an existing part, or a parts diagram, so you are comparing the same revision.
Should I lubricate the seal on installation?
Yes - a thin film of silicone-based pool lubricant helps the seal seat evenly and makes the next service far easier. Do not use petroleum-based grease, which swells and degrades most elastomers used in pool equipment.
How do I confirm this fits my equipment?
Match the part number stamped on the component you are replacing, or look it up in the parts list for your Jandy equipment. If your model or serial number is not named on this page, send it to us before you order and we will confirm the fit.
How often do pool seals need replacing?
Seals are consumables. Replace them whenever the component is opened, and sooner if you see flattening, cracking, a chalky surface or any weeping. A failed seal on the suction side draws air and can make a pump lose prime.
Is there a warranty on this seal?
It carries the standard Jandy manufacturer warranty. The terms are set by Jandy, and on some equipment the coverage only applies when a licensed professional performs the installation. Keep the receipt and packaging until you have confirmed correct operation.