FitCheckrCompatibility verdict
Does Core 400S-RF fit Core 400S?
Model: Core 400S
Part: Core 400S-RF
Fit summary
Core 400S-RF is the baseline physical fit for the Core 400S body; specialty variants may share sizing.
Core 400S filters are larger than Core 300 filters; the series number matters.
- Marketplace title says universal fit but does not mention Core 400S.
- The old part number on your device does not match Core 400S-RF or its known family.
- The listing photo looks close, but the latch, seal, bag type, or frame shape differs.
Is Core 400S-RF the same as any similar-looking replacement?
Not necessarily. Similar-looking filters, bags, and maintenance kits can differ by seal, frame, cartridge latch, chip requirement, or pack contents.
What is this confidence score based on?
5 public source signals are currently reflected in this fit check. FitCheckr combines official pages, manuals, support documents, retailer listings, and public discussion summaries where available.
What should I do if my old part number is different?
Search the old part number first, then confirm it against your exact device model and manufacturer support page before buying.
5 public source signals checked. FitCheckr weighs official pages, manuals, support docs, retailer listings, and public discussion summaries before showing a fit verdict.