CAS Part On Hover
Have you ever spent twenty minutes trying to match the exact same nose on two Sims, only to realize you have no idea which preset you used? Or spotted a piece of broken custom content in Create-A-Sim and needed its ID to track it down in Sims 4 Studio? If this sounds familiar, you know the pain of CAS part identification. The solution is a clever little tool called CAS Part On Hover, and it is about to change the way you build Sims forever.
Created by deadlystingnyc, this mod does exactly what its name promises. The moment your cursor hovers over any CAS part, a tooltip appears showing the hex ID and internal name of that item. No more guesswork, no more digging through package files, and no more saving random items to Sims just to figure out what they are. The information you need is right there, on screen, in real time.
Why You Need CAS Part On Hover for The Sims 4
Identifying CAS parts, especially custom content, normally means a lot of guesswork. You either know the creator and can dig through their package files in Sims 4 Studio, or you are stuck. This mod surfaces the information you need directly in CAS, with no need to save items on Sims or open external programs. It is a genuine quality-of-life upgrade for anyone who downloads CC, builds detailed Sims, or manages a large mods folder.
Beyond simple identification, this tool is a lifesaver for troubleshooting. When a piece of CC breaks or renders incorrectly, you can hover over it in CAS, grab its hex ID, and look it up in Sims 4 Studio immediately. You will know exactly which file to delete or fix without any trial and error.
How CAS Part On Hover Works
The magic behind this mod is surprisingly simple. On hover in CAS, EA content parts including (but not limited to) presets, hair, clothing, accessories, body hair, tattoos, skin details, makeup, and pelt patterns show their hex ID and internal name out of the box. No setup is required for EA content. You drop the mod in, and it works.
There are a few nuances to be aware of. Co-branded and special-event items, such as those from Reaper's Rewards, currently keep their pre-existing tooltip text rather than showing the hex ID and internal name. Custom content style parts, which are distinct new items with their own catalog tile like a new hairstyle, show no tooltip by default until you run the optional CC naming command. After that, they display their hex ID and, when present, their internal name. CC swatches, which are extra color options added to an existing style such as a hair recolor, cannot be named. This is a limitation of the game's color-swatch UI and applies to EA swatches too. The hex ID alone is enough to look a part up in Sims 4 Studio, so you are never left in the dark.
Requirements and Compatibility
One of the best things about CAS Part On Hover is that it requires only the base game. No expansion packs, game packs, or stuff packs are needed. It is tested and compatible with the August 25th, 2026 Patch for PC and Mac, version 1.127.41. The developer actively keeps the mod updated, so you can trust it to work with the latest version of The Sims 4.
However, compatibility is not without its caveats. This mod replaces EA's cascustomizer UI resource. It will conflict with any other mod that overrides cascustomizer. Only one can be active: whichever loads last wins, and the other one's changes either break or stop working with no error message. If hover names stop appearing, or another CAS UI mod stops working, a cascustomizer conflict is the first thing to check.
Specifically, you should not install the standalone More Columns In CAS mod alongside this one, as they will conflict. Instead, use the included optional 3, 4, 5, or 6 column layout files. Color Sliders by thepancake1 is compatible in its core form, with one exception: the optional Enable Eyebrow Sliders add-on also overrides cascustomizer and therefore conflicts. Use either that add-on or this mod, not both.
How to Install CAS Part On Hover
Getting started with CAS Part On Hover is straightforward. The download unzips into a single deadlystingnyc_cas_part_on_hover folder. Drop that whole folder into your Mods folder, located at Documents/Electronic Arts/The Sims 4/Mods/. Then, enable Script Mods under Game Options, then Other. That is the core installation done.
If you use the standard 2-column CAS layout, you are finished after dropping the folder in. You can delete the More Columns Compatibility optional subfolder if you do not want a wider CAS catalog. For those who prefer a wider view, open the More Columns Compatibility folder, delete the default packages from the mod's main folder, move the caslibrary package up, and then move the files from your chosen column folder into the main mod folder. Do not use more than one column folder at a time.
If you are looking for a smoother installation experience, the foxygame.net launcher offers a one-click install for CAS Part On Hover, eliminating the need to manually manage folder structures. The launcher's add-on catalog keeps track of your mods and handles version compatibility checks, so you can spend less time fiddling with files and more time playing.
Baking Your Custom Content Names
To add hover names for your installed CC style parts, you need to run a simple command. Load into a lot in live mode first, as the cheat console does not run commands while CAS is open. Open the cheat console with Ctrl+Shift+C, enter testingcheats true, then type dsn_cph_generate and press Enter. Wait for a confirmation message in the console output and an orange notification on your wall instructing you to quit, clear cache files, and restart the game.
After quitting, delete two cache files from your Sims 4 folder: localthumbcache.package and avatarcache.package. Restart the game and enter CAS. Your CC hexes and names now appear on hover. Re-run this process whenever you add new CC to your game.
There are a few warnings to keep in mind. This command overwrites the mod's main package with your installed content added to the name map. It edits only that one file and never touches anything else. If anything goes wrong mid-write, your existing package is left intact. The baking command may fail due to access permissions, especially if your Sims 4 folder is installed in a non-default location. An error message detailing the workaround will be displayed if this happens. Also, updating the mod for new EA content does not preserve your baked CC names, so you will need to re-bake after updating the mod files.
For users of the foxygame.net launcher, auto-updates for CAS Part On Hover are handled seamlessly, which means you will not have to worry about manually re-downloading the mod when a new game patch drops. The launcher tracks the latest version and applies it for you, keeping your baked names workflow as smooth as possible.
Final Thoughts
CAS Part On Hover is one of those mods that you do not realize you need until you have it. It saves time, reduces frustration, and makes managing custom content infinitely easier. Whether you are a casual builder who wants to match facial features perfectly or a dedicated CC curator who needs to identify broken items, this tool delivers. It is free, lightweight, and tested against the latest patch. If you have ever struggled to identify a CAS part, this mod is the answer you have been looking for.