diff --git a/packages/react-native-renderer/src/__mocks__/react-native/Libraries/ReactPrivate/ReactFiberErrorDialog.js b/packages/react-native-renderer/src/__mocks__/react-native/Libraries/ReactPrivate/ReactFiberErrorDialog.js
new file mode 100644
index 0000000000..121a75e183
--- /dev/null
+++ b/packages/react-native-renderer/src/__mocks__/react-native/Libraries/ReactPrivate/ReactFiberErrorDialog.js
@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict
+ */
+
+module.exports = {
+  showErrorDialog: jest.fn(),
+};
diff --git a/packages/react-native-renderer/src/__mocks__/react-native/Libraries/ReactPrivate/ReactNativePrivateInterface.js b/packages/react-native-renderer/src/__mocks__/react-native/Libraries/ReactPrivate/ReactNativePrivateInterface.js
index 855a43338b..9d49212e00 100644
--- a/packages/react-native-renderer/src/__mocks__/react-native/Libraries/ReactPrivate/ReactNativePrivateInterface.js
+++ b/packages/react-native-renderer/src/__mocks__/react-native/Libraries/ReactPrivate/ReactNativePrivateInterface.js
@@ -11,15 +11,15 @@ module.exports = {
   get BatchedBridge() {
     return require('./BatchedBridge.js');
   },
-  get ExceptionsManager() {
-    return require('./ExceptionsManager');
-  },
   get Platform() {
     return require('./Platform');
   },
   get RCTEventEmitter() {
     return require('./RCTEventEmitter');
   },
+  get ReactFiberErrorDialog() {
+    return require('./ReactFiberErrorDialog');
+  },
   get ReactNativeViewConfigRegistry() {
     return require('./ReactNativeViewConfigRegistry');
   },
diff --git a/packages/react-reconciler/src/forks/ReactFiberErrorDialog.native.js b/packages/react-reconciler/src/forks/ReactFiberErrorDialog.native.js
index e5f0cf4db1..d31a45fc8a 100644
--- a/packages/react-reconciler/src/forks/ReactFiberErrorDialog.native.js
+++ b/packages/react-reconciler/src/forks/ReactFiberErrorDialog.native.js
@@ -10,41 +10,14 @@
 import type {CapturedError} from '../ReactCapturedValue';
 
 // Module provided by RN:
-import {ExceptionsManager} from 'react-native/Libraries/ReactPrivate/ReactNativePrivateInterface';
+import {ReactFiberErrorDialog as RNImpl} from 'react-native/Libraries/ReactPrivate/ReactNativePrivateInterface';
+import invariant from 'shared/invariant';
+
+invariant(
+  typeof RNImpl.showErrorDialog === 'function',
+  'Expected ReactFiberErrorDialog.showErrorDialog to be a function.',
+);
 
-/**
- * Intercept lifecycle errors and ensure they are shown with the correct stack
- * trace within the native redbox component.
- */
 export function showErrorDialog(capturedError: CapturedError): boolean {
-  const {componentStack, error} = capturedError;
-
-  let errorToHandle: Error;
-
-  // Typically Errors are thrown but eg strings or null can be thrown as well.
-  if (error instanceof Error) {
-    const {message, name} = error;
-
-    const summary = message ? `${name}: ${message}` : name;
-
-    errorToHandle = error;
-
-    try {
-      errorToHandle.message = `${summary}\n\nThis error is located at:${componentStack}`;
-    } catch (e) {}
-  } else if (typeof error === 'string') {
-    errorToHandle = new Error(
-      `${error}\n\nThis error is located at:${componentStack}`,
-    );
-  } else {
-    errorToHandle = new Error(`Unspecified error at:${componentStack}`);
-  }
-
-  ExceptionsManager.handleException(errorToHandle, false);
-
-  // Return false here to prevent ReactFiberErrorLogger default behavior of
-  // logging error details to console.error. Calls to console.error are
-  // automatically routed to the native redbox controller, which we've already
-  // done above by calling ExceptionsManager.
-  return false;
+  return RNImpl.showErrorDialog(capturedError);
 }
diff --git a/scripts/flow/react-native-host-hooks.js b/scripts/flow/react-native-host-hooks.js
index 946f699741..f93595a7e6 100644
--- a/scripts/flow/react-native-host-hooks.js
+++ b/scripts/flow/react-native-host-hooks.js
@@ -17,6 +17,7 @@ import type {
   ViewConfigGetter,
 } from 'react-native-renderer/src/ReactNativeTypes';
 import type {RNTopLevelEventType} from 'events/TopLevelEventTypes';
+import type {CapturedError} from 'react-reconciler/src/ReactCapturedValue';
 
 declare module 'react-native/Libraries/ReactPrivate/ReactNativePrivateInterface' {
   declare export function deepDiffer(one: any, two: any): boolean;
@@ -29,8 +30,8 @@ declare module 'react-native/Libraries/ReactPrivate/ReactNativePrivateInterface'
     blurTextInput: (object: any) => void,
     focusTextInput: (object: any) => void,
   };
-  declare export var ExceptionsManager: {
-    handleException: (error: Error, isFatal: boolean) => void,
+  declare export var ReactFiberErrorDialog: {
+    showErrorDialog: (error: CapturedError) => boolean,
   };
   declare export var Platform: {
     OS: string,