diff --git a/React/Fabric/RCTSurfacePresenter.mm b/React/Fabric/RCTSurfacePresenter.mm
index a91a63190..e77d6e1d0 100644
--- a/React/Fabric/RCTSurfacePresenter.mm
+++ b/React/Fabric/RCTSurfacePresenter.mm
@@ -30,7 +30,7 @@
 #import <fabric/uimanager/ContextContainer.h>
 
 #import "MainRunLoopEventBeat.h"
-#import "MessageQueueEventBeat.h"
+#import "RuntimeEventBeat.h"
 #import "RCTConversions.h"
 
 using namespace facebook::react;
@@ -165,12 +165,12 @@ using namespace facebook::react;
       });
     };
 
-  EventBeatFactory synchronousBeatFactory = [messageQueueThread]() {
-    return std::make_unique<MainRunLoopEventBeat>(messageQueueThread);
+  EventBeatFactory synchronousBeatFactory = [runtimeExecutor]() {
+    return std::make_unique<MainRunLoopEventBeat>(runtimeExecutor);
   };
 
-  EventBeatFactory asynchronousBeatFactory = [messageQueueThread]() {
-    return std::make_unique<MessageQueueEventBeat>(messageQueueThread);
+  EventBeatFactory asynchronousBeatFactory = [runtimeExecutor]() {
+    return std::make_unique<RuntimeEventBeat>(runtimeExecutor);
   };
 
   contextContainer->registerInstance<EventBeatFactory>(synchronousBeatFactory, "synchronous");
diff --git a/React/Fabric/Utils/MainRunLoopEventBeat.h b/React/Fabric/Utils/MainRunLoopEventBeat.h
index abfd8c230..b0e029eb6 100644
--- a/React/Fabric/Utils/MainRunLoopEventBeat.h
+++ b/React/Fabric/Utils/MainRunLoopEventBeat.h
@@ -7,7 +7,7 @@
 
 #include <CoreFoundation/CoreFoundation.h>
 #include <CoreFoundation/CFRunLoop.h>
-#include <cxxreact/MessageQueueThread.h>
+#include <fabric/uimanager/FabricUIManager.h>
 #include <fabric/events/EventBeat.h>
 
 namespace facebook {
@@ -21,15 +21,15 @@ class MainRunLoopEventBeat final:
   public EventBeat {
 
 public:
-  MainRunLoopEventBeat(std::shared_ptr<MessageQueueThread> messageQueueThread);
+  MainRunLoopEventBeat(RuntimeExecutor runtimeExecutor);
   ~MainRunLoopEventBeat();
 
   void induce() const override;
 
 private:
-  void blockMessageQueueAndThenBeat() const;
+  void lockExecutorAndBeat() const;
 
-  std::shared_ptr<MessageQueueThread> messageQueueThread_;
+  const RuntimeExecutor runtimeExecutor_;
   CFRunLoopObserverRef mainRunLoopObserver_;
 };
 
diff --git a/React/Fabric/Utils/MainRunLoopEventBeat.mm b/React/Fabric/Utils/MainRunLoopEventBeat.mm
index 33e8e9a38..5762c6990 100644
--- a/React/Fabric/Utils/MainRunLoopEventBeat.mm
+++ b/React/Fabric/Utils/MainRunLoopEventBeat.mm
@@ -11,8 +11,8 @@
 namespace facebook {
 namespace react {
 
-MainRunLoopEventBeat::MainRunLoopEventBeat(std::shared_ptr<MessageQueueThread> messageQueueThread):
-  messageQueueThread_(std::move(messageQueueThread)) {
+MainRunLoopEventBeat::MainRunLoopEventBeat(RuntimeExecutor runtimeExecutor):
+  runtimeExecutor_(std::move(runtimeExecutor)) {
 
   mainRunLoopObserver_ =
     CFRunLoopObserverCreateWithHandler(
@@ -25,7 +25,7 @@ MainRunLoopEventBeat::MainRunLoopEventBeat(std::shared_ptr<MessageQueueThread> m
           return;
         }
 
-        this->blockMessageQueueAndThenBeat();
+        this->lockExecutorAndBeat();
       }
   );
 
@@ -45,11 +45,11 @@ void MainRunLoopEventBeat::induce() const {
   }
 
   RCTExecuteOnMainQueue(^{
-    this->blockMessageQueueAndThenBeat();
+    this->lockExecutorAndBeat();
   });
 }
 
-void MainRunLoopEventBeat::blockMessageQueueAndThenBeat() const {
+void MainRunLoopEventBeat::lockExecutorAndBeat() const {
   // Note: We need the third mutex to get back to the main thread before
   // the lambda is finished (because all mutexes are allocated on the stack).
 
@@ -61,7 +61,7 @@ void MainRunLoopEventBeat::blockMessageQueueAndThenBeat() const {
   mutex2.lock();
   mutex3.lock();
 
-  messageQueueThread_->runOnQueue([&]() {
+  runtimeExecutor_([&](jsi::Runtime &runtime) {
     mutex1.unlock();
     mutex2.lock();
     mutex3.unlock();
diff --git a/React/Fabric/Utils/MessageQueueEventBeat.h b/React/Fabric/Utils/RuntimeEventBeat.h
similarity index 63%
rename from React/Fabric/Utils/MessageQueueEventBeat.h
rename to React/Fabric/Utils/RuntimeEventBeat.h
index 093798bad..1ddd3983c 100644
--- a/React/Fabric/Utils/MessageQueueEventBeat.h
+++ b/React/Fabric/Utils/RuntimeEventBeat.h
@@ -7,26 +7,28 @@
 
 #include <CoreFoundation/CoreFoundation.h>
 #include <CoreFoundation/CFRunLoop.h>
-#include <cxxreact/MessageQueueThread.h>
+#include <fabric/uimanager/FabricUIManager.h>
 #include <fabric/events/EventBeat.h>
 
 namespace facebook {
 namespace react {
 
 /*
- * Event beat that associated with MessageQueueThread.
+ * Event beat associated with JavaScript runtime.
+ * The beat is called on `RuntimeExecutor`'s thread induced by the main thread
+ * event loop.
  */
-class MessageQueueEventBeat:
+class RuntimeEventBeat:
   public EventBeat {
 
 public:
-  MessageQueueEventBeat(const std::shared_ptr<MessageQueueThread> &messageQueueThread);
-  ~MessageQueueEventBeat();
+  RuntimeEventBeat(RuntimeExecutor runtimeExecutor);
+  ~RuntimeEventBeat();
 
   void induce() const override;
 
 private:
-  const std::shared_ptr<MessageQueueThread> messageQueueThread_;
+  const RuntimeExecutor runtimeExecutor_;
   CFRunLoopObserverRef mainRunLoopObserver_;
   mutable std::atomic<bool> isBusy_ {false};
 };
diff --git a/React/Fabric/Utils/MessageQueueEventBeat.mm b/React/Fabric/Utils/RuntimeEventBeat.mm
similarity index 84%
rename from React/Fabric/Utils/MessageQueueEventBeat.mm
rename to React/Fabric/Utils/RuntimeEventBeat.mm
index c6b87dd34..911ab6061 100644
--- a/React/Fabric/Utils/MessageQueueEventBeat.mm
+++ b/React/Fabric/Utils/RuntimeEventBeat.mm
@@ -5,13 +5,13 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-#include "MessageQueueEventBeat.h"
+#include "RuntimeEventBeat.h"
 
 namespace facebook {
 namespace react {
 
-MessageQueueEventBeat::MessageQueueEventBeat(const std::shared_ptr<MessageQueueThread> &messageQueueThread):
-  messageQueueThread_(messageQueueThread) {
+RuntimeEventBeat::RuntimeEventBeat(RuntimeExecutor runtimeExecutor):
+  runtimeExecutor_(std::move(runtimeExecutor)) {
 
   mainRunLoopObserver_ =
     CFRunLoopObserverCreateWithHandler(
@@ -31,12 +31,12 @@ MessageQueueEventBeat::MessageQueueEventBeat(const std::shared_ptr<MessageQueueT
   CFRunLoopAddObserver(CFRunLoopGetMain(), mainRunLoopObserver_, kCFRunLoopCommonModes);
 }
 
-MessageQueueEventBeat::~MessageQueueEventBeat() {
+RuntimeEventBeat::~RuntimeEventBeat() {
   CFRunLoopRemoveObserver(CFRunLoopGetMain(), mainRunLoopObserver_, kCFRunLoopCommonModes);
   CFRelease(mainRunLoopObserver_);
 }
 
-void MessageQueueEventBeat::induce() const {
+void RuntimeEventBeat::induce() const {
   if (!isRequested_ || isBusy_) {
     return;
   }
@@ -58,7 +58,7 @@ void MessageQueueEventBeat::induce() const {
 #endif
 
   isBusy_ = true;
-  messageQueueThread_->runOnQueue([=]() mutable {
+  runtimeExecutor_([=](jsi::Runtime &runtime) mutable {
     this->beat();
     isBusy_ = false;
 #ifndef NDEBUG