diff --git a/Controller/Product/Card.php b/Controller/Product/Card.php
index d9954a83..00a4bd60 100644
--- a/Controller/Product/Card.php
+++ b/Controller/Product/Card.php
@@ -36,10 +36,10 @@ public function __construct(
      */
     public function execute(): HttpInterface
     {
-        $productId = $this->request->getParam('product_id');
+        $itemId = (string) $this->request->getParam('item_id');
         $cardType = $this->request->getParam('card_type');
-        $itemHtml = $cardType ? $this->cacheHelper->load((int)$productId, $cardType) :
-            $this->cacheHelper->load((int)$productId);
+        $itemHtml = $cardType ? $this->cacheHelper->load($itemId, $cardType) :
+            $this->cacheHelper->load($itemId);
 
         $response = $this->httpFactory->create();
         $response->appendBody($itemHtml);
diff --git a/Helper/Cache.php b/Helper/Cache.php
index 2aeff9e6..ec98b2d5 100644
--- a/Helper/Cache.php
+++ b/Helper/Cache.php
@@ -47,29 +47,29 @@ public function __construct(
     }
 
     /**
-     * @param int $productId
+     * @param string $itemId
      * @param string $cardType
      * @return string
      * @throws LocalizedException
      * @throws NoSuchEntityException
      */
-    public function load(int $productId, string $cardType = 'default'): string
+    public function load(string $itemId, string $cardType = 'default'): string
     {
-        $result = $this->cache->load($this->getCacheKey($productId, $cardType));
+        $result = $this->cache->load($this->getCacheKey($itemId, $cardType));
         return $result ? $result : '';
     }
 
     /**
      * @param string $data
-     * @param int $productId
+     * @param string $itemId
      * @param string $cardType
      * @return void
      * @throws LocalizedException
      * @throws NoSuchEntityException
      */
-    public function save(string $data, int $productId, string $cardType = 'default'): void
+    public function save(string $data, string $itemId, string $cardType = 'default'): void
     {
-        $this->cache->save($data, $this->getCacheKey($productId, $cardType));
+        $this->cache->save($data, $this->getCacheKey($itemId, $cardType));
     }
 
     /**
@@ -128,13 +128,13 @@ public function isHyvaTheme(): bool
     }
 
     /**
-     * @param int $productId
+     * @param string $itemId
      * @param string $cardType
      * @return string
      * @throws LocalizedException
      * @throws NoSuchEntityException
      */
-    private function getCacheKey(int $productId, string $cardType): string
+    private function getCacheKey(string $itemId, string $cardType): string
     {
         $storeId = $this->storeManager->getStore()->getId();
         $customerGroupId = $this->customerSession->getCustomerGroupId();
@@ -143,7 +143,7 @@ private function getCacheKey(int $productId, string $cardType): string
             '%s_%s_%s_%s_%s',
             $storeId,
             $customerGroupId,
-            $productId,
+            $itemId,
             $cardType,
             self::REDIS_CACHE_KEY
         );
diff --git a/ViewModel/LinkedProductListItem.php b/ViewModel/LinkedProductListItem.php
index cd76b70d..ae573864 100644
--- a/ViewModel/LinkedProductListItem.php
+++ b/ViewModel/LinkedProductListItem.php
@@ -48,7 +48,7 @@ public function getItemHtml(
             );
         }
 
-        $productId = (int) $product->getId();
+        $productId = (string) $product->getId();
         $cardType = str_replace(' ', '_', $params['card_type']);
         if (!$this->cacheHelper->load($productId, $cardType)) {
             $itemHtml = $this->getItemHtmlWithRenderer(
@@ -60,7 +60,7 @@ public function getItemHtml(
         }
 
         return sprintf(
-            '<!-- bad ESI request: bad ESI request -->',
+            '<!-- bad ESI request: bad ESI request -->',
             Cache::PRODUCT_CARD_PATH,
             $productId,
             $cardType
diff --git a/ViewModel/ProductListItem.php b/ViewModel/ProductListItem.php
index 1e9b160b..2a2d6869 100644
--- a/ViewModel/ProductListItem.php
+++ b/ViewModel/ProductListItem.php
@@ -63,8 +63,8 @@ public function getItemHtml(
             );
         }
 
-        $productId = (int) $item->getId();
-        if (!$this->cacheHelper->load($productId)) {
+        $itemId = (string) $item->getId();
+        if (!$this->cacheHelper->load($itemId)) {
             if ($isVisual) {
                 $itemHtml = $this->getVisualHtml($item);
             } else {
@@ -78,10 +78,10 @@ public function getItemHtml(
                 );
             }
 
-            $this->cacheHelper->save($itemHtml, $productId);
+            $this->cacheHelper->save($itemHtml, $itemId);
         }
 
-        return sprintf('<!-- bad ESI request: bad ESI request -->', Cache::PRODUCT_CARD_PATH, $productId);
+        return sprintf('<!-- bad ESI request: bad ESI request -->', Cache::PRODUCT_CARD_PATH, $itemId);
     }
 
     /**