SHURFLO Pump Rebuild Kit for 357 Series Piranha 600 GPH 12V — Complete Cartridge, Seals & O‑Rings

If your Piranha 357 series aerator or livewell pump is losing flow, leaking, or running rough, this genuine SHURFLO 94-619-00 cartridge rebuild kit gives you the replacement parts needed to return the unit to service without replacing the entire pump assembly. The kit is designed specifically for 357-series 600 GPH, 12V cartridges and fits the pump housings used in many marine livewell and aeration systems.

What parts are included and what do they do?

The kit supplies the wear components that most commonly fail: the pump cartridge, seals, and internal O-rings that prevent leaks and maintain impeller alignment. Replacing these restores internal tolerances and prevents the bulkier failures that force full pump replacement.

• Complete 600 GPH replacement cartridge sized for 357-series housings
• Seals and O-rings to stop leaks and maintain pressure
• Internal components aligned to original SHURFLO tolerances

How simple is installation and what tools do I need?

Installation is straightforward for anyone comfortable with basic marine maintenance. Most rebuilds require only a few common hand tools and about 15–30 minutes to complete, with no special bench equipment needed.

• Hand tools: screwdriver and adjustable wrench
• Disconnect battery or power before removing cartridge
• Follow original pump orientation and torque for reassembly

Will using this kit restore original flow and efficiency?

Yes — replacing the worn cartridge and seals returns the pump’s internal clearances and impeller performance close to factory condition, which helps recover rated flow. While overall system flow also depends on plumbing, inlet strainers, and voltage, the rebuilt cartridge removes a common bottleneck.

• Targets internal wear that reduces GPH output
• Helps recover the 600 GPH capacity when system conditions are normal
• Improves seal integrity and reduces leak-related losses

How do I tell if my 357-series cartridge needs this kit?

Symptoms that point to a worn cartridge include noticeably reduced flow, unusual vibration or noise, and visible leaks around the cartridge seal. Regular inspection during the boating season helps you catch wear early and avoid emergency pump replacement.

• Lower than expected livewell/sump water flow
• Grinding or rattling sound from the pump housing
• Signs of fluid weepage at the cartridge seam or O-ring area

Who is this for: This SHURFLO 94-619-00 rebuild kit is intended for boat owners, dockside technicians, and marine service shops maintaining Piranha 357-series 600 GPH, 12V livewell and aerator pumps. It’s a cost-effective option for anyone wanting to extend pump life, avoid full-unit replacement, and keep livewells, bait tanks, or aeration systems operating reliably between seasons.