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Reef Octopus Pump Rear Bushing (VarioS 4, 4S, 6, 6S, and 8)

Reef Octopus Pump Rear Bushing (VarioS 4, 4S, 6, 6S, and 8)

$1.05
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Reef Octopus VarioS 4(S), 6(S) & 8 Pump Replacement Rear Bushing (ROP-RR-BSHNG-V)

The Reef Octopus VarioS 4(S), 6(S) & 8 Pump Rear Bushing (SKU: ROP-RR-BSHNG-V) is an authentic factory-spec alignment and isolation sleeve distributed by CoralVue to preserve the whisper-quiet runtime and structural hardware lifespans of your mid-to-large frame pump equipment. Whether running a heavy return line via a VarioS-4 or VarioS-8, or operating a high-volume fractionating skimmer column via VarioS-4S or VarioS-6S needlewheels, driving these commercial-grade motors produces massive rotational forces. To ensure the thick central ceramic shaft doesn't vibrate or snap under pressure, the very back end of the magnetic rotor assembly rests within this specialized rear bushing spacer.

Sitting at the deepest point of the pump’s internal motor cavity, this bushing acts as a critical mechanical alignment block. Over years of nonstop system turnover, tiny particles of calcium carbonate, fine substrate sand, and organic film can migrate into the internal wet well. This abrasive debris creates heavy grinding friction that slowly wears down the smooth plastic walls of the bushing, causing it to lose its round shape. Once a rear bushing becomes ovalized or cracked, the magnetic impeller will develop an unsafe wobble. This wobble shows up as a loud, chattering rattle or a grinding hum, and it can cause the spinning rotor to hit the sensitive epoxy stator walls—permanently frying your expensive pump. Replacing a worn bushing with this original factory component immediately realigns your drive array, restoring smooth performance and silent operation.

Key Features

  • True Multi-Device Factory Scaling:Specifically molded to snap directly into the rear tracking socket built into the mid-to-large frame VarioS return and skimmer stator cores.

  • Hydrodynamically Slotted Profile: Outfitted with structural bypass grooves that allow internal cooling water streams to pass through, pulling heat off the ceramic bearing.

  • Reef-Safe Chemical Density: Fabricated entirely from premium, non-leaching marine plastics that will never pit, soften, or break down under heavy ozone or saltwater exposure.

  • Prevents Ceramic Core Snapping: Cushions the rigid ceramic axle against sudden structural shocks during controller speed adjustments or sudden feed mode ramp cycles.

Verified Hardware Compatibility

  • Reef Octopus Controllable Pump Ecosystems: Engineered exclusively as the matching replacement internal rear bushing for the following model configurations:

    • VarioS-4 Circulation Pump & VarioS-4S Skimmer Pump

    • VarioS-6 Circulation Pump & VarioS-6S Skimmer Pump

    • VarioS-8 High-Flow Circulation Pump

  • (Note: This mid-to-large-frame hardware is tailored for the VarioS 4, 6, and 8 series. Small-frame pump lines like the VarioS-2 series use a narrower shaft path, while industrial VarioS-10 networks feature an expanded profile; neither are compatible with this specific SKU).

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