diff --git a/src/js/game/belt_path.js b/src/js/game/belt_path.js
index c003d7aa..e542346f 100644
--- a/src/js/game/belt_path.js
+++ b/src/js/game/belt_path.js
@@ -8,10 +8,10 @@ import { clamp, epsilonCompare, round4Digits } from "../core/utils";
 import { enumDirection, enumDirectionToVector, enumInvertedDirections, Vector } from "../core/vector";
 import { BasicSerializableObject, types } from "../savegame/serialization";
 import { BaseItem } from "./base_item";
+import { inputFilterId } from "./components/input_filter";
 import { Entity } from "./entity";
 import { typeItemSingleton } from "./item_resolver";
 import { GameRoot } from "./root";
-import { MOD_ITEM_FILTERS } from "./systems/item_ejector";
 
 const logger = createLogger("belt_path");
 
@@ -364,13 +364,10 @@ export class BeltPath extends BasicSerializableObject {
         }
 
         return function (item) {
-            // it could be a custom mod case
-            // let's check if it is any of them
-            for (let id in MOD_ITEM_FILTERS) {
-                if (entity.components[id]) {
-                    let handler = MOD_ITEM_FILTERS[id];
-                    if (handler(item, entity, matchingSlotIndex)) return true;
-                }
+            const inputFilterComp = entity.components[inputFilterId];
+            if (inputFilterComp) {
+                // it's a custom filter
+                if (inputFilterComp.canAcceptItem(item, entity, matchingSlotIndex)) return true;
             }
 
             return false;
diff --git a/src/js/game/components/input_filter.js b/src/js/game/components/input_filter.js
new file mode 100644
index 00000000..3afd76be
--- /dev/null
+++ b/src/js/game/components/input_filter.js
@@ -0,0 +1,19 @@
+import { BaseItem } from "../base_item";
+import { Component } from "../component";
+import { Entity } from "../entity";
+
+export const inputFilterId = "InputFilter";
+
+export class InputFilterComponent extends Component {
+    /**
+     * @param {(item: BaseItem, entity: Entity, slot: number) => boolean} canAcceptItem
+     */
+    constructor(canAcceptItem = () => true) {
+        super();
+        this.canAcceptItem = canAcceptItem;
+    }
+
+    static getId() {
+        return inputFilterId;
+    }
+}
diff --git a/src/js/game/systems/item_ejector.js b/src/js/game/systems/item_ejector.js
index 74ee2fd3..fb51f2c9 100644
--- a/src/js/game/systems/item_ejector.js
+++ b/src/js/game/systems/item_ejector.js
@@ -6,6 +6,7 @@ import { StaleAreaDetector } from "../../core/stale_area_detector";
 import { enumDirection, enumDirectionToVector } from "../../core/vector";
 import { BaseItem } from "../base_item";
 import { BeltComponent } from "../components/belt";
+import { inputFilterId } from "../components/input_filter";
 import { ItemAcceptorComponent } from "../components/item_acceptor";
 import { ItemEjectorComponent } from "../components/item_ejector";
 import { Entity } from "../entity";
@@ -14,12 +15,6 @@ import { MapChunkView } from "../map_chunk_view";
 
 const logger = createLogger("systems/ejector");
 
-/**
- * Key is component id, value is function to handle whether or not item can enter.
- * @type {Object<string, (item: BaseItem, reciever: Entity, slot: number) => boolean>}
- */
-export const MOD_ITEM_FILTERS = {};
-
 export class ItemEjectorSystem extends GameSystemWithFilter {
     constructor(root) {
         super(root, [ItemEjectorComponent]);
@@ -300,13 +295,10 @@ export class ItemEjectorSystem extends GameSystemWithFilter {
             }
         }
 
-        // it could be a custom mod case
-        // let's check if it is any of them
-        for (let id in MOD_ITEM_FILTERS) {
-            if (receiver.components[id]) {
-                let handler = MOD_ITEM_FILTERS[id];
-                if (handler(item, receiver, slotIndex)) return true;
-            }
+        const inputFilterComp = receiver.components[inputFilterId];
+        if (inputFilterComp) {
+            // it's a custom filter
+            if (inputFilterComp.canAcceptItem(item, receiver, slotIndex)) return true;
         }
 
         return false;