A Star Citizen ship component compatibility guide starts with one check: the component’s size determines which ships and vehicles can accept it. Class and grade are separate attributes, and each hardpoint has limits, so a matching size alone may not confirm a fit. [1]
That distinction can save you from choosing a part that looks suitable but cannot be installed. For example, check a candidate component’s size and its class and grade as separate details; treat the selected hardpoint’s limits as another part of the fit check. [1]
Use this guide to verify whether a component fits, not to set upgrade priorities, walk through shopping steps, or rank performance. Before spending, confirm the ship and component details in the current game version. For a practical check, note the ship and slot you plan to change, compare the displayed fit details, and pause if the match is unclear. Then compare only the choices you have confirmed fit.
Find the ship’s component slot and configuration
Start with the exact ship and the specific slot you plan to change; compatibility is a slot-by-slot check, not a guess based on the ship’s name. For example, note whether you are inspecting a weapon hardpoint, shield-generator slot, or another component position, then keep that selection in view as you check its details.
Identify the slot, not just the ship
Open the ship and equipment details in the game version you are playing, and select the precise component category or hardpoint you intend to change. A ship can have several different slots, so a detail from one position should not be treated as a rule for another.
Record the displayed size and every restriction shown for that slot. Do not assume that two slots on the same ship accept identical components: each component hardpoint has its own limit, and component size determines which ships and vehicles can install it. [1]
For instance, if you are checking two weapon hardpoints, write down the size and limits shown for each one separately. That simple note helps you avoid carrying a detail from the first hardpoint over to the second without checking.
Read the ship’s current setup
Check the ship’s current configuration before you judge a fit. Note which equipment is already installed and which slot you have selected; an existing component tells you what is in that configuration, not necessarily what every slot on the ship accepts.
If a displayed setup differs from what you expected, return to the selected ship and slot details rather than relying on memory. Keep the ship identity, slot category, displayed size, and restrictions together in your notes so you can check the same position consistently.
Use the in-game ship and equipment details for the version you are playing. If a listing or remembered configuration does not match what the game shows, work from the current in-game details and pause before spending until you have resolved the mismatch.
When a component will not equip, reselect the ship and exact slot, then check that you are looking at the intended category and the slot’s recorded details. A mismatch between your notes and the displayed configuration is a reason to verify the slot again, not to assume that another position follows the same rules.
Your next step is to verify the ship and component details in your current game version, then compare only choices that fit that specific slot before buying.
Match the component’s size and restrictions
A component fits only when its size, category, and any displayed restrictions match the ship’s slot. Use those details together rather than relying on a single label to decide whether an item can be installed.
Compare size, class, and grade
Start with the component’s size and the size allowed by the slot. Size determines which ships and vehicles can install a component, so a mismatch means it will not fit that location. [1]
For example, if the slot allows a smaller component than the one you are checking, do not treat the component’s class or grade as a workaround. Class and grade describe different attributes; they do not replace a size match. [1]
Check class and grade when the interface displays them, but keep them separate from the fit check. A component may have a class and grade that look suitable while still failing the slot’s size requirement. [1]
Match the component category
Confirm that the component’s category matches the slot’s function. A quantum drive belongs in a quantum-drive slot, while a shield generator belongs in a shield slot; the game lists categories such as quantum drives and shields among ship components. [2]
If the category is wrong, choosing a component with a seemingly appropriate size will not make it the right type for that slot. Compare the displayed category on both sides before trying to equip it.
Check limits and resolve a failed fit
Respect any hardpoint or slot limit shown for the ship. Each component hardpoint has a limit, so do not assume that a component is accepted just because its category and size appear to match. [1]
If the install fails, recheck the size, category, and any displayed limit for the exact slot you selected. For instance, verify that you are comparing a shield generator with a shield slot—not a different slot—and that the component’s size is allowed there. These checks help isolate a mismatch without guessing.
Before you spend, verify the ship and component details in the game version you are playing. If you cannot confirm a match, pause and check those details rather than relying on an assumption; once the fit is clear, compare only choices that match the slot.
Confirm the fit in the current game version
Check the version you’re playing. Before relying on a compatibility note, record the current live game version and inspect the ship and candidate component in that version. Game details can change, so an older reference may not describe what you see now.
Open the ship’s equipment view and select the relevant slot. Check the slot and the ship’s current configuration, then inspect the candidate component’s displayed fit information. For example, if you’re trying to replace a shield generator, compare its displayed information with the shield slot you selected rather than assuming another slot on the same ship has identical rules. Component size affects which ships and vehicles can install it, while class and grade describe other component attributes. [1]
Confirm the game accepts the match. Use the component’s displayed fit information or the in-game equipment interface to see whether the selected slot accepts it. A component category such as a quantum drive or shield generator can help you identify what you’re looking at; the important check here is whether the interface accepts that component for the slot you selected. If it does not, don’t treat a similar-looking item or a match on another ship as confirmation.
Use older references only as clues. A guide or third-party listing can help you find a component to inspect, but it should not be your final proof of current compatibility. For instance, if a listing names a component for your ship but the live equipment view does not accept it, stop and recheck the current ship and component details instead of trusting the listing.
Pause if the fit remains unclear. Don’t buy on a guess. Reopen the ship and component details in the live game, confirm the version you’re checking, and look for a clear acceptance indication in the equipment interface. If you still can’t confirm a match, leave the purchase until you can verify it. Once the fit is confirmed, compare only the compatible choices before buying.
Why a component may not equip
When a component will not equip, recheck its category, size, and the slot or hardpoint you selected before assuming the ship is incompatible. A listed component size helps determine which ships and vehicles can install it, while each component hardpoint has its own limit. [1]
Check the category and slot
Make sure the component type matches the slot you are trying to fill. For example, a quantum drive belongs in a quantum-drive slot, not a shield-generator slot; if you selected the wrong slot in the equipment interface, back out and select the intended one.
Then compare the component’s displayed size with the size shown for that slot. A size mismatch can explain a failed fit even when the component appears to be intended for the same general ship system. [1]
Recheck the ship and hardpoint
Look at the ship’s current configuration and the specific hardpoint you selected. Do not assume that another slot on the same ship has identical limits; check the displayed restriction for the exact slot you are trying to use. Each component hardpoint is limited. [1]
If the interface shows an existing component or configuration detail, confirm that you are troubleshooting the intended slot rather than a different one. For instance, if a ship has more than one slot of the same category, reopen the selected hardpoint and compare its details with the component listing.
If the fit still fails
If the category, size, and displayed slot details appear to match but the installation still fails, verify those details again in the current game version. Treat an old note or remembered configuration as a reason to recheck, not as confirmation that the present slot accepts the component.
Work through the check again in order: confirm the selected ship and hardpoint, confirm the component category, then compare the displayed component size with the slot’s displayed size or limit. If the details still seem to match, use the current game’s displayed information to resolve the mismatch before spending; then compare only choices that the slot accepts.
Confirm the fit, then compare compatible choices
Once you have confirmed a component fits, compare only options the current game accepts for that slot; this guide checks fit, not performance rankings. Before spending, return to the ship and component details in the game version you are playing, since those are the details to use for your decision.
For example, if you are considering a different shield generator, first confirm it is accepted by the shield slot on your ship. Do the same for any other component you plan to change, rather than assuming a choice that fits one slot will fit another. Component size determines which ships and vehicles can install it, while class and grade indicate how well it works. [1]
Once fit is confirmed, keep the comparison focused on compatible choices. If two options are accepted by the slot, you can compare them for your needs in the separate component-comparison guide; this compatibility guide does not rank their performance. If you cannot verify a candidate in the current game, pause instead of treating an older listing as confirmation.
Your next step is straightforward: check the ship and component details in your current game version, then compare only the choices confirmed for that slot before buying. That keeps the fit check separate from deciding which compatible option suits you best.