diff --git a/Classes/Domain/Model/AbstractType.php b/Classes/Domain/Model/AbstractType.php
index c53ef00..2b708e8 100644
--- a/Classes/Domain/Model/AbstractType.php
+++ b/Classes/Domain/Model/AbstractType.php
@@ -92,7 +92,7 @@ public function findDocumentById($id)
      * @param string $content
      * @return Response
      */
-    public function request($method, $path = null, array $arguments = [], $content = null)
+    public function request($method, $path = null, array $arguments = [], $content = null, $header = null)
     {
         $path = '/' . $this->name . ($path ?: '');
 
@@ -133,4 +133,30 @@ public function search(array $searchQuery)
     {
         return $this->request('GET', '/_search', [], json_encode($searchQuery));
     }
+
+    /**
+     * A bulk request always needs the following strukture:
+     * action_and_meta_data
+     * optional_source
+     * action_and_meta_data
+     * optional_source
+     * As the index and type are already in the url the meta_data part could be empty
+     *
+     * @param array $arguments
+     * @param string|array $content
+     * @return Response
+     */
+    public function bulkRequest(array $arguments = [], $content = null)
+    {
+        $path = '/' . $this->name . '/_bulk';
+        if (is_array($content)) {
+            $ndjsonContent = '';
+            foreach ($content as $contentItem) {
+                // JSON_FORCE_OBJECT is important here as a empty meta_data needs to be a empty json object
+                $ndjsonContent = $ndjsonContent . json_encode($contentItem, JSON_FORCE_OBJECT) . "\n";
+            }
+            $content = $ndjsonContent;
+        }
+        return $this->index->request('POST', $path, $arguments, $content, true, 'application/x-ndjson');
+    }
 }
diff --git a/Classes/Domain/Model/Client.php b/Classes/Domain/Model/Client.php
index 8445aab..c89c5bf 100644
--- a/Classes/Domain/Model/Client.php
+++ b/Classes/Domain/Model/Client.php
@@ -95,10 +95,11 @@ public function findIndex($indexName)
      * @param string $path
      * @param array $arguments
      * @param string|array $content
+     * @param string $header
      * @return Response
      */
-    public function request($method, $path = null, array $arguments = [], $content = null)
+    public function request($method, $path = null, array $arguments = [], $content = null, $header = null)
     {
-        return $this->requestService->request($method, $this, $path, $arguments, $content);
+        return $this->requestService->request($method, $this, $path, $arguments, $content, $header);
     }
 }
diff --git a/Classes/Domain/Model/Index.php b/Classes/Domain/Model/Index.php
index 54ecadc..1940be0 100644
--- a/Classes/Domain/Model/Index.php
+++ b/Classes/Domain/Model/Index.php
@@ -153,10 +153,11 @@ public function exists()
      * @param array $arguments
      * @param string $content
      * @param boolean $prefixIndex
+     * @param string $header
      * @return Response
      * @throws ElasticSearchException
      */
-    public function request($method, $path = null, array $arguments = [], $content = null, $prefixIndex = true)
+    public function request($method, $path = null, array $arguments = [], $content = null, $prefixIndex = true, $header = null)
     {
         if ($this->client === null) {
             throw new Exception('The client of the index "' . $this->name . '" is not set, hence no requests can be done.');
@@ -168,7 +169,7 @@ public function request($method, $path = null, array $arguments = [], $content =
             $path = '/' . $path;
         }
 
-        return $this->client->request($method, $path, $arguments, $content);
+        return $this->client->request($method, $path, $arguments, $content, $header);
     }
 
     /**
diff --git a/Classes/Transfer/RequestService.php b/Classes/Transfer/RequestService.php
index 0fe7335..050ea54 100644
--- a/Classes/Transfer/RequestService.php
+++ b/Classes/Transfer/RequestService.php
@@ -61,9 +61,10 @@ public function initializeObject()
      * @param string $path
      * @param array $arguments
      * @param string|array $content
+     * @param string $header
      * @return Response
      */
-    public function request($method, ElasticSearchClient $client, $path = null, $arguments = [], $content = null)
+    public function request($method, ElasticSearchClient $client, $path = null, $arguments = [], $content = null, $header = null)
     {
         $clientConfigurations = $client->getClientConfigurations();
         $clientConfiguration = $clientConfigurations[0];
@@ -90,8 +91,9 @@ public function request($method, ElasticSearchClient $client, $path = null, $arg
             $requestUri->setUsername($uri->getUsername());
             $requestUri->setPassword($uri->getPassword());
         }
-        
-        $request->setHeader('Content-Type', 'application/json');
+
+        $header = $header ?: 'application/json';
+        $request->setHeader('Content-Type', $header);
         $response = $this->browser->sendRequest($request);
 
         return new Response($response, $this->browser->getLastRequest());