Zodiac - Filter arm 900 Boreal - R0597300

Zodiac – Filter arm 900 Boreal – R0597300

The Zodiac Filter Arm 900 Boreal (R0597300) is a genuine OEM replacement component designed specifically for the Zodiac Boreal 900 sand filter range. Known in French as the “bras collecteur” or collector arm, this internal filter arm is a critical element of the filter’s lateral collection system. It sits inside the filter tank and is responsible for collecting filtered water from across the sand bed and directing it toward the outlet port, ensuring efficient and uniform water throughput during the filtration cycle.

Sand filters such as the Zodiac Boreal series rely on a set of lateral filter arms arranged around a central standpipe. Each arm features fine slots or perforations that allow filtered water to pass through while retaining the sand filtration media. Over time, these arms can crack, clog, or become brittle due to prolonged exposure to pool chemicals and pressure cycling. Replacing a damaged arm with this genuine Zodiac spare part restores the filter to its original operating efficiency and prevents sand from bypassing into the pool.

Technical characteristics and compatibility

This filter arm is engineered for the Zodiac Boreal 900 sand filter, a popular mid-range pool filtration unit widely used across residential pool installations in Europe. The “900” designation refers to the filter tank diameter class, indicating a filter suited to pools of moderate to larger size. The arm is manufactured to precise dimensional tolerances to ensure a secure and leak-free fit within the lateral assembly of the Boreal 900 tank. As a genuine Zodiac part carrying the reference R0597300, it is guaranteed to be fully compatible with the original filter design, unlike generic alternatives that may not seal correctly or match the required slot dimensions.

The component is typically made from durable engineering-grade plastic selected for its resistance to chlorinated water, UV exposure, and the mechanical stresses associated with backwashing cycles. Installation requires no specialist tools: the arm is simply threaded or clipped into the existing lateral assembly inside the filter tank, making it accessible for a competent pool owner or technician during routine filter servicing.

Suitability and application

This replacement filter arm is intended exclusively for use with the Zodiac Boreal 900 sand filter. It is not a universal component and should only be fitted to the specific filter model for which it is designed. It is the correct choice whenever the original arm shows signs of cracking, breakage, or physical damage, or when sand is being found in the pool return water — a common indicator of a failed lateral arm. Purchasing a genuine Zodiac spare part ensures that the filter continues to meet its original filtration performance specifications, protecting pool water quality and prolonging the life of the filtration system as a whole.