A post-motor filter sits after the motor airflow path. Its location does not by itself identify the replacement cartridge.
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Source-backed example
Shark lists post-motor filter 616FJ140 for specific Rocket cordless model codes, including IX140. Read the full list before extending that result to a different suffix.
Pre-motor is a different position
Do not swap a pre-motor foam or felt filter for a post-motor cartridge. Check the manual for the location, the part label, and whether washing is permitted.
Check in order
- Locate the filter using the manual.
- Read the OEM number on the part or product listing.
- Compare the complete machine model code with the maker’s fit list.
Source checked 2026-10-28
SharkNinja: Post-Motor Filter 616FJ140 ↗.
Manufacturer listings can change. Verify your machine label and the current product page before buying.