Spot Zero Portable Dockside Pre-filter Assembly is the Spot Zero portable dockside pre-filter assembly—a complete kit for dockside pre-treatment ahead of a Spot Zero system, including Stage 1 oxidizer/heavy-metal remover (P/N 252404004) and Stage 2 sediment filter (P/N 252404005).

Dockside pretreatment hardware when marina water needs sediment and metal reduction before the Spot Zero train. Verify fitment to your Spot Zero portable setup.

Why detailers keep it on the cart

• Complete portable dockside pre-filter kit
• Stage 1 oxidizer & heavy-metal remover (252404004)
• Stage 2 sediment remover (252404005)
• SKU: SZ-PD-PF-ASSY

How to use

1. Install per Spot Zero dockside instructions; note flow direction
2. Flush new filters before first use if the manual requires
3. Replace stages on the service interval or when pressure drop rises

Note: Confirm compatibility with your Spot Zero model. Bypass or winterize per manufacturer guidance in freezing climates.

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• $7 flat rate on orders under $200
• Same-day shipping on orders placed before 2pm ET, Mon–Fri (business days)
• Most items ship UPS Ground or USPS Priority Mail. Hazardous materials (flammable, corrosive or oxidizer products) ship UPS Ground only and are not eligible for USPS, expedited, overnight or air shipping.
• Discounted UPS overnight rates available on non-hazardous items
• Questions? Call us at 800-248-6130