Zodiac - Boreal diffuser - R0674400

Zodiac – Boreal diffuser – R0674400

The Zodiac Boreal diffuser (R0674400) is an original manufacturer replacement spare part designed specifically for Zodiac Boreal series pool sand filters. The diffuser is a critical internal component positioned within the filter tank, responsible for evenly distributing water across the filter media during the filtration cycle. By spreading incoming water uniformly over the sand bed, the diffuser ensures consistent filtration performance, prevents channelling through the media, and maximises the effective use of the full filter bed depth. Without a properly functioning diffuser, filter efficiency drops significantly, leading to poor water clarity and increased strain on the pump.

Technical characteristics and construction

The R0674400 diffuser is manufactured to Zodiac’s original specifications, ensuring a precise fit within the Boreal filter tank. It is constructed from durable, pool-chemical-resistant materials designed to withstand prolonged exposure to chlorinated or salt-treated water without degradation. The diffuser connects internally at the top of the filter body and works in conjunction with the multiport valve and the lateral assembly at the base of the tank. As an OEM part, it matches the exact geometry and dimensions of the original component, which is essential for maintaining correct water flow patterns and hydraulic balance within the filter system. The Zodiac product reference for this part is R0674400, also listed under the broader Fluidra Zodiac catalogue reference ZPWS5073 in combination with associated Boreal filter components.

Suitability and application

This replacement diffuser is intended exclusively for use with Zodiac Boreal series sand filters. It is the correct choice when the original diffuser is cracked, broken, warped, or missing, and is suitable for both private residential above-ground and in-ground pool installations that use the Boreal filter range. If your Boreal filter is showing signs of poor filtration quality, cloudy water returning to the pool, or uneven backwash performance, a damaged or degraded diffuser may be the cause. Replacing this component with the genuine Zodiac OEM part restores the filter to its designed operating condition and extends the service life of the overall filtration system. Always verify your specific Boreal filter model before ordering to confirm compatibility.