diff --git a/src/Search/ProductIndexer.php b/src/Search/ProductIndexer.php
index cd6fc3d..ad3d4ce 100644
--- a/src/Search/ProductIndexer.php
+++ b/src/Search/ProductIndexer.php
@@ -27,6 +27,9 @@ use Spatie\MediaLibrary\MediaCollections\Models\Media;
  *   - reviews: public-safe fields only (see mapReview() — reviewer_email is deliberately
  *     excluded, it's PII with no storefront use), including staff replies, plus an
  *     average rating
+ *   - channel_ids (filterable) — Lunar's base indexer only indexes "status" as
+ *     filterable, not channel assignment, so search results can't otherwise be
+ *     scoped to products actually assigned+enabled on the current sales channel
  *
  * A review is created/edited independently of its product (Modules\Core\Providers\
  * ReviewServiceProvider re-indexes the product on review create/update/delete), so
@@ -49,6 +52,7 @@ class ProductIndexer extends BaseProductIndexer
             'collections',
             'price',
             'slugs',
+            'channel_ids',
         ];
     }
 
@@ -83,6 +87,10 @@ class ProductIndexer extends BaseProductIndexer
         $data['reviews'] = $reviews->map(fn (ProductReview $review) => $this->mapReview($review))->all();
         $data['review_count'] = $reviews->count();
         $data['average_rating'] = $reviews->isEmpty() ? null : round($reviews->avg('rating'), 1);
+        $data['channel_ids'] = $model->channels()
+            ->wherePivot('enabled', true)
+            ->pluck('id')
+            ->toArray();
 
         return $data;
     }