diff --git a/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/source/ProgressiveMediaSource.java b/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/source/ProgressiveMediaSource.java
index 47757865ed..5535fc8d7f 100644
--- a/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/source/ProgressiveMediaSource.java
+++ b/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/source/ProgressiveMediaSource.java
@@ -62,8 +62,6 @@ public final class ProgressiveMediaSource extends BaseMediaSource
     private DrmSessionManagerProvider drmSessionManagerProvider;
     private LoadErrorHandlingPolicy loadErrorHandlingPolicy;
     private int continueLoadingCheckIntervalBytes;
-    @Nullable private String customCacheKey;
-    @Nullable private Object tag;
 
     /**
      * Creates a new factory for {@link ProgressiveMediaSource}s.
@@ -207,16 +205,6 @@ public final class ProgressiveMediaSource extends BaseMediaSource
     @Override
     public ProgressiveMediaSource createMediaSource(MediaItem mediaItem) {
       checkNotNull(mediaItem.localConfiguration);
-      boolean needsTag = mediaItem.localConfiguration.tag == null && tag != null;
-      boolean needsCustomCacheKey =
-          mediaItem.localConfiguration.customCacheKey == null && customCacheKey != null;
-      if (needsTag && needsCustomCacheKey) {
-        mediaItem = mediaItem.buildUpon().setTag(tag).setCustomCacheKey(customCacheKey).build();
-      } else if (needsTag) {
-        mediaItem = mediaItem.buildUpon().setTag(tag).build();
-      } else if (needsCustomCacheKey) {
-        mediaItem = mediaItem.buildUpon().setCustomCacheKey(customCacheKey).build();
-      }
       return new ProgressiveMediaSource(
           mediaItem,
           dataSourceFactory,