OASE Replacement Impeller for BioMaster 600 and BioMaster Thermo 600 (45145)

The OASE Replacement Impeller (45145) is a genuine OEM replacement rotor assembly designed specifically for the OASE BioMaster 600, BioMaster Thermo 600, and compatible BioMaster² 600 external canister filters. The impeller is the rotating component at the heart of the filter motor head that generates the water flow driving all filtration through the filter media.

When the impeller becomes worn, chipped, or damaged — or if the ceramic axis breaks — the filter can develop reduced flow, increased noise, vibration, or stop circulating water altogether. The ceramic axis of the rotor may occasionally break, in which case the complete rotor unit must be replaced. Regular cleaning of the rotor chamber with a small brush also makes sense, since a lot of dirt can settle there and reduce filter performance.

Replacing with a genuine OASE OEM impeller restores full pump output and filter performance — at a fraction of the cost of replacing the entire filter unit.

Key Features

• Genuine OASE replacement part: Exact OEM fit for BioMaster 600 and BioMaster Thermo 600 — no compatibility guesswork
• Complete rotor assembly: Full replacement impeller unit — replace the complete rotor when the ceramic axis breaks or the impeller becomes worn or damaged
• Restores full pump flow and filter performance: A worn or damaged impeller is the most common cause of reduced flow, noise, and vibration — replacement restores full rated performance
• Ceramic axis: High-quality ceramic shaft construction for quiet, durable pump operation — replace the complete unit if the ceramic axis breaks
• Regular rotor chamber cleaning recommended: Clean the rotor chamber with a small brush during routine maintenance to prevent dirt build-up that can restrict filter performance
• Easy to replace: Straightforward component swap during routine filter maintenance — no specialist tools required
• Genuine OASE quality: Manufactured to OASE's standards for reliable, long-lasting performance
• 1 impeller assembly per pack

Compatibility

• Compatible with:
  • OASE BioMaster 600 (42743)
  • OASE BioMaster Thermo 600 (42747)
  • OASE BioMaster² 600 and BioMaster² Thermo 600 (compatible range)
• Not compatible with: BioMaster 250/350 (use 45144) or BioMaster 850 (use 87124)

Product Details

• Brand: OASE
• Product Code: 45145
• Type: Replacement Impeller / Rotor Assembly
• Compatibility: OASE BioMaster 600 / BioMaster Thermo 600 / BioMaster² 600
• Quantity: 1 impeller assembly

This replacement impeller is suitable for any aquarium keeper running an OASE BioMaster 600 or BioMaster Thermo 600 external canister filter who needs to restore full pump flow and quiet filter performance.