diff --git a/src/course-home/outline-tab/OutlineTab.jsx b/src/course-home/outline-tab/OutlineTab.jsx
index 15ac5dd605..de900251be 100644
--- a/src/course-home/outline-tab/OutlineTab.jsx
+++ b/src/course-home/outline-tab/OutlineTab.jsx
@@ -5,6 +5,7 @@ import { sendTrackEvent } from '@edx/frontend-platform/analytics';
 import { getAuthenticatedUser } from '@edx/frontend-platform/auth';
 import { injectIntl, intlShape } from '@edx/frontend-platform/i18n';
 import { Button } from '@openedx/paragon';
+import { PluginSlot } from '@openedx/frontend-plugin-framework';
 import { AlertList } from '../../generic/user-messages';
 
 import CourseDates from './widgets/CourseDates';
@@ -194,19 +195,24 @@ const OutlineTab = ({ intl }) => {
               />
             )}
             <CourseTools />
-            <UpgradeNotification
-              offer={offer}
-              verifiedMode={verifiedMode}
-              accessExpiration={accessExpiration}
-              contentTypeGatingEnabled={datesBannerInfo.contentTypeGatingEnabled}
-              marketingUrl={marketingUrl}
-              upsellPageName="course_home"
-              userTimezone={userTimezone}
-              shouldDisplayBorder
-              timeOffsetMillis={timeOffsetMillis}
-              courseId={courseId}
-              org={org}
-            />
+            <PluginSlot
+              id="outline_tab_notifications_plugin"
+              pluginProps={{ courseId }}
+            >
+              <UpgradeNotification
+                offer={offer}
+                verifiedMode={verifiedMode}
+                accessExpiration={accessExpiration}
+                contentTypeGatingEnabled={datesBannerInfo.contentTypeGatingEnabled}
+                marketingUrl={marketingUrl}
+                upsellPageName="course_home"
+                userTimezone={userTimezone}
+                shouldDisplayBorder
+                timeOffsetMillis={timeOffsetMillis}
+                courseId={courseId}
+                org={org}
+              />
+            </PluginSlot>
             <CourseDates />
             <CourseHandouts />
           </div>
diff --git a/src/course-home/outline-tab/OutlineTab.test.jsx b/src/course-home/outline-tab/OutlineTab.test.jsx
index 47ceed621d..7bb8544d96 100644
--- a/src/course-home/outline-tab/OutlineTab.test.jsx
+++ b/src/course-home/outline-tab/OutlineTab.test.jsx
@@ -132,6 +132,16 @@ describe('Outline Tab', () => {
       expect(expandedSectionNode).toHaveAttribute('aria-expanded', 'true');
     });
 
+    it('includes outline_tab_notifications_plugin slot', async () => {
+      const { courseBlocks } = await buildMinimalCourseBlocks(courseId, 'Title', { resumeBlock: true });
+      setTabData({
+        course_blocks: { blocks: courseBlocks.blocks },
+      });
+      await fetchAndRender();
+
+      expect(screen.getByTestId('outline_tab_notifications_plugin')).toBeInTheDocument();
+    });
+
     it('handles expand/collapse all button click', async () => {
       await fetchAndRender();
       // Button renders as "Expand All"
diff --git a/src/courseware/course/new-sidebar/sidebars/discussions-notifications/notifications/NotificationsWidget.jsx b/src/courseware/course/new-sidebar/sidebars/discussions-notifications/notifications/NotificationsWidget.jsx
index 3f8ab62bbc..7e7087ac5b 100644
--- a/src/courseware/course/new-sidebar/sidebars/discussions-notifications/notifications/NotificationsWidget.jsx
+++ b/src/courseware/course/new-sidebar/sidebars/discussions-notifications/notifications/NotificationsWidget.jsx
@@ -1,6 +1,7 @@
 import React, { useContext, useEffect, useMemo } from 'react';
 
 import { sendTrackEvent } from '@edx/frontend-platform/analytics';
+import { PluginSlot } from '@openedx/frontend-plugin-framework';
 import { useModel } from '../../../../../../generic/model-store';
 import UpgradeNotification from '../../../../../../generic/upgrade-notification/UpgradeNotification';
 import { WIDGETS } from '../../../../../../constants';
@@ -58,6 +59,10 @@ const NotificationsWidget = () => {
     verification_status: verificationStatus,
   };
 
+  const onToggleSidebar = () => {
+    toggleSidebar(currentSidebar, WIDGETS.NOTIFICATIONS);
+  };
+
   // After three seconds, update notificationSeen (to hide red dot)
   useEffect(() => {
     setTimeout(onNotificationSeen, 3000);
@@ -68,22 +73,32 @@ const NotificationsWidget = () => {
 
   return (
     <div className="border border-light-400 rounded-sm" data-testid="notification-widget">
-      <UpgradeNotification
-        offer={offer}
-        verifiedMode={verifiedMode}
-        accessExpiration={accessExpiration}
-        contentTypeGatingEnabled={contentTypeGatingEnabled}
-        marketingUrl={marketingUrl}
-        upsellPageName="in_course"
-        userTimezone={userTimezone}
-        shouldDisplayBorder={false}
-        timeOffsetMillis={timeOffsetMillis}
-        courseId={courseId}
-        org={org}
-        upgradeNotificationCurrentState={upgradeNotificationCurrentState}
-        setupgradeNotificationCurrentState={setUpgradeNotificationCurrentState}
-        toggleSidebar={() => toggleSidebar(currentSidebar, WIDGETS.NOTIFICATIONS)}
-      />
+      <PluginSlot
+        id="notification_widget_slot"
+        pluginProps={{
+          courseId,
+          notificationCurrentState: upgradeNotificationCurrentState,
+          setNotificationCurrentState: setUpgradeNotificationCurrentState,
+          toggleSidebar: onToggleSidebar,
+        }}
+      >
+        <UpgradeNotification
+          offer={offer}
+          verifiedMode={verifiedMode}
+          accessExpiration={accessExpiration}
+          contentTypeGatingEnabled={contentTypeGatingEnabled}
+          marketingUrl={marketingUrl}
+          upsellPageName="in_course"
+          userTimezone={userTimezone}
+          shouldDisplayBorder={false}
+          timeOffsetMillis={timeOffsetMillis}
+          courseId={courseId}
+          org={org}
+          upgradeNotificationCurrentState={upgradeNotificationCurrentState}
+          setupgradeNotificationCurrentState={setUpgradeNotificationCurrentState}
+          toggleSidebar={onToggleSidebar}
+        />
+      </PluginSlot>
     </div>
   );
 };
diff --git a/src/courseware/course/new-sidebar/sidebars/discussions-notifications/notifications/NotificationsWidget.test.jsx b/src/courseware/course/new-sidebar/sidebars/discussions-notifications/notifications/NotificationsWidget.test.jsx
index fb5fb08416..11f9daf740 100644
--- a/src/courseware/course/new-sidebar/sidebars/discussions-notifications/notifications/NotificationsWidget.test.jsx
+++ b/src/courseware/course/new-sidebar/sidebars/discussions-notifications/notifications/NotificationsWidget.test.jsx
@@ -78,6 +78,21 @@ describe('NotificationsWidget', () => {
     });
   });
 
+  it('includes notification_widget_slot', async () => {
+    await fetchAndRender(
+      <SidebarContext.Provider value={{
+        currentSidebar: ID,
+        courseId,
+        hideNotificationbar: false,
+        isNotificationbarAvailable: true,
+      }}
+      >
+        <NotificationsWidget />
+      </SidebarContext.Provider>,
+    );
+    expect(screen.getByTestId('notification_widget_slot')).toBeInTheDocument();
+  });
+
   it('renders upgrade card', async () => {
     await fetchAndRender(
       <SidebarContext.Provider value={{
@@ -90,9 +105,11 @@ describe('NotificationsWidget', () => {
         <NotificationsWidget />
       </SidebarContext.Provider>,
     );
-    const UpgradeNotification = document.querySelector('.upgrade-notification');
 
+    // The Upgrade Notification should be inside the PluginSlot.
+    const UpgradeNotification = document.querySelector('.upgrade-notification');
     expect(UpgradeNotification).toBeInTheDocument();
+
     expect(screen.getByRole('link', { name: 'Upgrade for $149' })).toBeInTheDocument();
     expect(screen.queryByText('You have no new notifications at this time.')).not.toBeInTheDocument();
   });
diff --git a/src/courseware/course/sequence/Unit/UnitSuspense.jsx b/src/courseware/course/sequence/Unit/UnitSuspense.jsx
index 59e34333ce..09843a7164 100644
--- a/src/courseware/course/sequence/Unit/UnitSuspense.jsx
+++ b/src/courseware/course/sequence/Unit/UnitSuspense.jsx
@@ -2,6 +2,7 @@ import React, { Suspense } from 'react';
 import PropTypes from 'prop-types';
 
 import { useIntl } from '@edx/frontend-platform/i18n';
+import { PluginSlot } from '@openedx/frontend-plugin-framework';
 
 import { useModel } from '@src/generic/model-store';
 import PageLoading from '@src/generic/PageLoading';
@@ -24,19 +25,24 @@ const UnitSuspense = ({
     meta.contentTypeGatingEnabled && unit.containsContentTypeGatedContent
   );
 
-  const suspenseComponent = (message, Component) => (
-    <Suspense fallback={<PageLoading srMessage={formatMessage(message)} />}>
-      <Component courseId={courseId} />
-    </Suspense>
-  );
-
   return (
     <>
       {shouldDisplayContentGating && (
-        suspenseComponent(messages.loadingLockedContent, LockPaywall)
+        <Suspense fallback={<PageLoading srMessage={formatMessage(messages.loadingLockedContent)} />}>
+          <PluginSlot
+            id="gated_unit_content_message_slot"
+            pluginProps={{
+              courseId,
+            }}
+          >
+            <LockPaywall courseId={courseId} />
+          </PluginSlot>
+        </Suspense>
       )}
       {shouldDisplayHonorCode && (
-        suspenseComponent(messages.loadingHonorCode, HonorCode)
+        <Suspense fallback={<PageLoading srMessage={formatMessage(messages.loadingHonorCode)} />}>
+          <HonorCode courseId={courseId} />
+        </Suspense>
       )}
     </>
   );
diff --git a/src/courseware/course/sequence/Unit/UnitSuspense.test.jsx b/src/courseware/course/sequence/Unit/UnitSuspense.test.jsx
index 34bc21c073..f47ee6b241 100644
--- a/src/courseware/course/sequence/Unit/UnitSuspense.test.jsx
+++ b/src/courseware/course/sequence/Unit/UnitSuspense.test.jsx
@@ -64,7 +64,7 @@ describe('UnitSuspense component', () => {
   describe('output', () => {
     describe('LockPaywall', () => {
       const testNoPaywall = () => {
-        it('does not display LockPaywal', () => {
+        it('does not display LockPaywall', () => {
           el = shallow(<UnitSuspense {...props} />);
           expect(el.instance.findByType(LockPaywall).length).toEqual(0);
         });
@@ -79,8 +79,9 @@ describe('UnitSuspense component', () => {
         it('displays LockPaywall in Suspense wrapper with PageLoading fallback', () => {
           el = shallow(<UnitSuspense {...props} />);
           const [component] = el.instance.findByType(LockPaywall);
-          expect(component.parent.type).toEqual('Suspense');
-          expect(component.parent.props.fallback)
+          expect(component.parent.type).toEqual('PluginSlot');
+          expect(component.parent.parent.type).toEqual('Suspense');
+          expect(component.parent.parent.props.fallback)
             .toEqual(<PageLoading srMessage={formatMessage(messages.loadingLockedContent)} />);
           expect(component.props.courseId).toEqual(props.courseId);
         });
diff --git a/src/courseware/course/sidebar/sidebars/notifications/NotificationTray.jsx b/src/courseware/course/sidebar/sidebars/notifications/NotificationTray.jsx
index df51fa7c93..9fe8d1ad21 100644
--- a/src/courseware/course/sidebar/sidebars/notifications/NotificationTray.jsx
+++ b/src/courseware/course/sidebar/sidebars/notifications/NotificationTray.jsx
@@ -2,8 +2,9 @@ import { injectIntl, intlShape } from '@edx/frontend-platform/i18n';
 import classNames from 'classnames';
 import { useContext, useEffect, useMemo } from 'react';
 import { sendTrackEvent } from '@edx/frontend-platform/analytics';
-import { useModel } from '@src/generic/model-store';
-import UpgradeNotification from '@src/generic/upgrade-notification/UpgradeNotification';
+import { PluginSlot } from '@openedx/frontend-plugin-framework';
+import { useModel } from '../../../../../generic/model-store';
+import UpgradeNotification from '../../../../../generic/upgrade-notification/UpgradeNotification';
 
 import messages from '../../../messages';
 import SidebarBase from '../../common/SidebarBase';
@@ -77,21 +78,30 @@ const NotificationTray = ({ intl }) => {
     >
       <div>{verifiedMode
         ? (
-          <UpgradeNotification
-            offer={offer}
-            verifiedMode={verifiedMode}
-            accessExpiration={accessExpiration}
-            contentTypeGatingEnabled={contentTypeGatingEnabled}
-            marketingUrl={marketingUrl}
-            upsellPageName="in_course"
-            userTimezone={userTimezone}
-            shouldDisplayBorder={false}
-            timeOffsetMillis={timeOffsetMillis}
-            courseId={courseId}
-            org={org}
-            upgradeNotificationCurrentState={upgradeNotificationCurrentState}
-            setupgradeNotificationCurrentState={setUpgradeNotificationCurrentState}
-          />
+          <PluginSlot
+            id="notification_tray_plugin"
+            pluginProps={{
+              courseId,
+              notificationCurrentState: upgradeNotificationCurrentState,
+              setNotificationCurrentState: setUpgradeNotificationCurrentState,
+            }}
+          >
+            <UpgradeNotification
+              offer={offer}
+              verifiedMode={verifiedMode}
+              accessExpiration={accessExpiration}
+              contentTypeGatingEnabled={contentTypeGatingEnabled}
+              marketingUrl={marketingUrl}
+              upsellPageName="in_course"
+              userTimezone={userTimezone}
+              shouldDisplayBorder={false}
+              timeOffsetMillis={timeOffsetMillis}
+              courseId={courseId}
+              org={org}
+              upgradeNotificationCurrentState={upgradeNotificationCurrentState}
+              setupgradeNotificationCurrentState={setUpgradeNotificationCurrentState}
+            />
+          </PluginSlot>
         ) : (
           <p className="p-3 small">{intl.formatMessage(messages.noNotificationsMessage)}</p>
         )}
diff --git a/src/courseware/course/sidebar/sidebars/notifications/NotificationTray.test.jsx b/src/courseware/course/sidebar/sidebars/notifications/NotificationTray.test.jsx
index 666874d75c..2e1815f7be 100644
--- a/src/courseware/course/sidebar/sidebars/notifications/NotificationTray.test.jsx
+++ b/src/courseware/course/sidebar/sidebars/notifications/NotificationTray.test.jsx
@@ -81,6 +81,19 @@ describe('NotificationTray', () => {
       .toBeInTheDocument();
   });
 
+  it('includes notification_tray_plugin slot', async () => {
+    await fetchAndRender(
+      <SidebarContext.Provider value={{
+        currentSidebar: ID,
+        courseId,
+      }}
+      >
+        <NotificationTray />
+      </SidebarContext.Provider>,
+    );
+    expect(screen.getByTestId('notification_tray_plugin')).toBeInTheDocument();
+  });
+
   it('renders upgrade card', async () => {
     await fetchAndRender(
       <SidebarContext.Provider value={{
@@ -91,10 +104,9 @@ describe('NotificationTray', () => {
         <NotificationTray />
       </SidebarContext.Provider>,
     );
-    const UpgradeNotification = document.querySelector('.upgrade-notification');
 
-    expect(UpgradeNotification)
-      .toBeInTheDocument();
+    expect(document.querySelector('.upgrade-notification')).toBeInTheDocument();
+
     expect(screen.getByRole('link', { name: 'Upgrade for $149' }))
       .toBeInTheDocument();
     expect(screen.queryByText('You have no new notifications at this time.'))
diff --git a/src/setupTest.js b/src/setupTest.js
index e1bfdc79b6..46752b6d25 100755
--- a/src/setupTest.js
+++ b/src/setupTest.js
@@ -29,11 +29,12 @@ import { getCourseOutlineStructure } from './courseware/data/thunks';
 import { appendBrowserTimezoneToUrl, executeThunk } from './utils';
 import buildSimpleCourseAndSequenceMetadata from './courseware/data/__factories__/sequenceMetadata.factory';
 import { buildOutlineFromBlocks } from './courseware/data/__factories__/learningSequencesOutline.factory';
+import MockedPluginSlot from './tests/MockedPluginSlot';
 
 jest.mock('@openedx/frontend-plugin-framework', () => ({
   ...jest.requireActual('@openedx/frontend-plugin-framework'),
   Plugin: () => 'Plugin',
-  PluginSlot: () => 'PluginSlot',
+  PluginSlot: MockedPluginSlot,
 }));
 
 jest.mock('@src/generic/plugin-store', () => ({
diff --git a/src/tests/MockedPluginSlot.jsx b/src/tests/MockedPluginSlot.jsx
new file mode 100644
index 0000000000..e86952ee0b
--- /dev/null
+++ b/src/tests/MockedPluginSlot.jsx
@@ -0,0 +1,26 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+const MockedPluginSlot = ({ children, id }) => (
+  <div data-testid={id}>
+    PluginSlot_{id}
+    { children && <div>{children}</div> }
+  </div>
+);
+
+MockedPluginSlot.displayName = 'PluginSlot';
+
+MockedPluginSlot.propTypes = {
+  children: PropTypes.oneOfType([
+    PropTypes.arrayOf(PropTypes.node),
+    PropTypes.node,
+  ]),
+  id: PropTypes.string,
+};
+
+MockedPluginSlot.defaultProps = {
+  children: undefined,
+  id: undefined,
+};
+
+export default MockedPluginSlot;
diff --git a/src/tests/MockedPluginSlot.test.jsx b/src/tests/MockedPluginSlot.test.jsx
new file mode 100644
index 0000000000..b830b68fbf
--- /dev/null
+++ b/src/tests/MockedPluginSlot.test.jsx
@@ -0,0 +1,43 @@
+import React from 'react';
+import { render, screen } from '@testing-library/react';
+import MockedPluginSlot from './MockedPluginSlot';
+
+describe('MockedPluginSlot', () => {
+  it('renders mock plugin with "PluginSlot" text', () => {
+    render(<MockedPluginSlot id="test_plugin" />);
+
+    const component = screen.getByText('PluginSlot_test_plugin');
+    expect(component).toBeInTheDocument();
+  });
+
+  it('renders as the slot children directly if there is content within', () => {
+    render(
+      <div role="article">
+        <MockedPluginSlot>
+          <q role="note">How much wood could a woodchuck chuck if a woodchuck could chuck wood?</q>
+        </MockedPluginSlot>
+      </div>,
+    );
+
+    const component = screen.getByRole('article');
+    expect(component).toBeInTheDocument();
+
+    // Direct children
+    const quote = component.querySelector(':scope > q');
+    expect(quote.getAttribute('role')).toBe('note');
+  });
+
+  it('renders mock plugin with a data-testid ', () => {
+    render(
+      <MockedPluginSlot id="guybrush">
+        <q role="note">I am selling these fine leather jackets.</q>
+      </MockedPluginSlot>,
+    );
+
+    const component = screen.getByTestId('guybrush');
+    expect(component).toBeInTheDocument();
+
+    const quote = component.querySelector('[role=note]');
+    expect(quote).toBeInTheDocument();
+  });
+});