diff --git a/src/constants/query-strings.js b/src/constants/query-strings.js
index 5ff1f636c..a0009bae0 100644
--- a/src/constants/query-strings.js
+++ b/src/constants/query-strings.js
@@ -2,6 +2,7 @@ const queryStrings = {
     FMG_PAGE: "fmgPage",
     START_TYPE: "start_type",
     ZIP_CODE: "zipcode",
+    PROMO: "promo",
 };
 
 export { queryStrings };
diff --git a/src/helpers/heritage-integration/navigation-helper.js b/src/helpers/heritage-integration/navigation-helper.js
index db7881527..ff651aab5 100644
--- a/src/helpers/heritage-integration/navigation-helper.js
+++ b/src/helpers/heritage-integration/navigation-helper.js
@@ -1,4 +1,5 @@
 import { queryStrings } from "@/constants/query-strings";
+import { getQuerystringParameter } from "@/helpers/querystring-helper";
 import { externalUrls } from "@/router/router-constants/externalUrl-values";
 import { lazyLoadComponent } from "@/router/dynamic-routing/component-loader.js";
 import { saveSession } from "@/helpers/heritage-integration/order-helper.js";
@@ -59,12 +60,20 @@ export async function navigateToHeritageFunnel({ shouldSaveSession = true, loadi
         loadingModal.showModal();
     }
 
-    router.navigateToExternalUrl(externalUrls.HERITAGE_FUNNEL, {
+    var heritageParms = {
         corid: store.getters.order.referralCorrelationId,
         src: "concept-funnel",
         conceptsqid: store.getters.applicationUser.savedSessionId,
         isInsurance: store.getters.payment.isInsurance,
-    });
+    };
+
+    const promo = getQuerystringParameter(queryStrings.PROMO)
+
+    if (promo) {
+        heritageParms["promo"] = promo;
+    }
+
+    router.navigateToExternalUrl(externalUrls.HERITAGE_FUNNEL, heritageParms);
 }
 
 export async function skipVinLookup() {
diff --git a/src/router/index.js b/src/router/index.js
index 11efa6080..424d09dcd 100644
--- a/src/router/index.js
+++ b/src/router/index.js
@@ -6,6 +6,7 @@ import { lazyLoadComponent } from "@/router/dynamic-routing/component-loader.js"
 import { routingTable } from "@/router/router-constants/routing-table.js";
 import { globalEvents, globalEventTypes } from "@/constants/events";
 import { queryStrings } from "@/constants/query-strings";
+import { getQuerystringParameter } from "@/helpers/querystring-helper";
 import { getDeviceIdValue } from "@/helpers/heritage-integration/cookie-helper";
 
 // Heritage integration
@@ -277,14 +278,9 @@ async function navigate(
             fmgPage: destinationFmgPageValue,
         };
 
-        const queryString = window.location.search;
-        const urlParams = new URLSearchParams(queryString);
-        const lowerCaseParams = new URLSearchParams();
-        for (const [name, value] of urlParams) {
-            lowerCaseParams.append(name.toLowerCase(), value);
-        }
-        const hasZip = lowerCaseParams.has(queryStrings.ZIP_CODE);
-        const zip = lowerCaseParams.get(queryStrings.ZIP_CODE);
+        const hasZip = getQuerystringParameter(queryStrings.ZIP_CODE)
+        const zip = getQuerystringParameter(queryStrings.ZIP_CODE)
+        const promo = getQuerystringParameter(queryStrings.PROMO)
 
         if (
             hasZip &&
@@ -296,6 +292,10 @@ async function navigate(
             queryStringsObject[queryStrings.ZIP_CODE] = zip;
         }
 
+        if (promo) {
+            queryStringsObject[queryStrings.PROMO] = promo;
+        }
+
         router.push({
             name: "root",
             query: Object.assign(optionalQuery, queryStringsObject),