diff --git components/embedder_support/user_agent_utils.cc components/embedder_support/user_agent_utils.cc
index 516504c2ce442..60899c8e4f7bf 100644
--- components/embedder_support/user_agent_utils.cc
+++ components/embedder_support/user_agent_utils.cc
@@ -14,6 +14,7 @@
 #include "base/version.h"
 #include "build/branding_buildflags.h"
 #include "build/build_config.h"
+#include "cef/libcef/common/cef_switches.h"
 #include "components/embedder_support/switches.h"
 #include "components/version_info/version_info.h"
 #include "content/public/browser/web_contents.h"
@@ -172,6 +173,12 @@ const blink::UserAgentBrandList& GetBrandVersionList() {
 }  // namespace
 
 std::string GetProduct() {
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+  if (command_line->HasSwitch(switches::kUserAgentProductAndVersion)) {
+    return command_line->GetSwitchValueASCII(
+        switches::kUserAgentProductAndVersion);
+  }
+
   if (base::FeatureList::IsEnabled(
           blink::features::kForceMajorVersion100InUserAgent))
     return "Chrome/" + GetM100VersionNumber();