Identify Camco Evo Premium, X2 and X3 Filter Cartridges
A replacement Camco water-filter cartridge must match both the filter housing and the correct stage. The Evo Premium cartridge and the Evo X2/X3 stage cartridges have different manufacturer numbers. Use the existing system label and stage position to identify the replacement rather than selecting by appearance alone.
Camco cartridge numbers and stages
| Camco MPN | Item | Published rating | Package |
|---|---|---|---|
| 40620 | Evo Premium | 5-micron | Single |
| 40637 | Evo X2/X3 Stage 1 | 5-micron | Single |
| 40638 | Evo X2/X3 Stage 2 | 0.5-micron | Single |
Cartridges are not complete filters. A part matching the system name still needs to match the correct stage and the housing's instructions.
Identify the correct filtration stage
- Read the filter housing's exact model number before removing a cartridge. Camco Evo Premium, Evo X2 and Evo X3 are distinct systems.
- Camco 40620 is a single 5-micron cartridge for the Evo Premium family, not a replacement for every Evo system.
- Camco 40637 is the Stage 1 cartridge in compatible Evo X2 and Evo X3 units, with a listed 5-micron sediment stage.
- Camco 40638 is the second-stage carbon-block cartridge in compatible Evo X2 and Evo X3 units, with a listed 0.5-micron rating.
- Do not assume that 40637 or 40638 replaces a separate third-stage cartridge. Check the current manufacturer instructions and housing labels before ordering and follow filter-change hygiene guidance.
Matching Camco components
Open the exact product to check its condition, supplied components and availability. UsedRVParts viewing and pickup in Kelowna are by appointment.
Camco 40637
Evo X2/X3 Stage 1 · 5-micron
Sediment-stage replacement cartridge with additional treatment media
Freshwater hose connection parts
Our Camco inline prefilter and hose-washer guide covers separate external filtration and hose sealing products.
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