diff --git a/packages/GA4Client/CHANGELOG.md b/packages/GA4Client/CHANGELOG.md
index 6bdea12..337e0d7 100644
--- a/packages/GA4Client/CHANGELOG.md
+++ b/packages/GA4Client/CHANGELOG.md
@@ -1,3 +1,10 @@
+# [1.5.0](https://github.com/mparticle-integrations/mparticle-javascript-integration-google-analytics-4/compare/v1.4.5...v1.5.0) (2025-05-05)
+
+
+### Features
+
+* Map product position to GA4 item index ([#62](https://github.com/mparticle-integrations/mparticle-javascript-integration-google-analytics-4/issues/62)) ([308076c](https://github.com/mparticle-integrations/mparticle-javascript-integration-google-analytics-4/commit/308076cc22b6a7f9e78bfb0c40486654e09a2a98))
+
 ## [1.4.5](https://github.com/mparticle-integrations/mparticle-javascript-integration-google-analytics-4/compare/v1.4.4...v1.4.5) (2024-10-09)
 
 
diff --git a/packages/GA4Client/dist/GoogleAnalytics4EventForwarderClientSide-Kit.common.js b/packages/GA4Client/dist/GoogleAnalytics4EventForwarderClientSide-Kit.common.js
index f77eca6..4cb9e05 100644
--- a/packages/GA4Client/dist/GoogleAnalytics4EventForwarderClientSide-Kit.common.js
+++ b/packages/GA4Client/dist/GoogleAnalytics4EventForwarderClientSide-Kit.common.js
@@ -930,6 +930,9 @@ function parseProduct(product, affiliation) {
             case 'Variant':
                 productWithAllAttributes.item_variant = product.Variant;
                 break;
+            case 'Position':
+                productWithAllAttributes.index = product.Position;
+                break;
             case 'Attributes':
                 break;
             default:
diff --git a/packages/GA4Client/dist/GoogleAnalytics4EventForwarderClientSide-Kit.iife.js b/packages/GA4Client/dist/GoogleAnalytics4EventForwarderClientSide-Kit.iife.js
index 69eb76c..76c1ae8 100644
--- a/packages/GA4Client/dist/GoogleAnalytics4EventForwarderClientSide-Kit.iife.js
+++ b/packages/GA4Client/dist/GoogleAnalytics4EventForwarderClientSide-Kit.iife.js
@@ -929,6 +929,9 @@ var GoogleAnalytics4Kit = (function (exports) {
                 case 'Variant':
                     productWithAllAttributes.item_variant = product.Variant;
                     break;
+                case 'Position':
+                    productWithAllAttributes.index = product.Position;
+                    break;
                 case 'Attributes':
                     break;
                 default:
diff --git a/packages/GA4Client/package-lock.json b/packages/GA4Client/package-lock.json
index 481915f..c637159 100644
--- a/packages/GA4Client/package-lock.json
+++ b/packages/GA4Client/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "@mparticle/web-google-analytics-4-client-kit",
-    "version": "1.4.5",
+    "version": "1.5.0",
     "lockfileVersion": 2,
     "requires": true,
     "packages": {
         "": {
             "name": "@mparticle/web-google-analytics-4-client-kit",
-            "version": "1.4.5",
+            "version": "1.5.0",
             "license": "Apache-2.0",
             "dependencies": {
                 "@mparticle/web-sdk": "^2.12.2",
@@ -23215,4 +23215,4 @@
             "dev": true
         }
     }
-}
\ No newline at end of file
+}
diff --git a/packages/GA4Client/package.json b/packages/GA4Client/package.json
index c99ca19..cbe7f5d 100644
--- a/packages/GA4Client/package.json
+++ b/packages/GA4Client/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@mparticle/web-google-analytics-4-client-kit",
-    "version": "1.4.5",
+    "version": "1.5.0",
     "author": "mParticle Developers <developers@mparticle.com> (https://www.mparticle.com)",
     "description": "mParticle integration sdk for Google Analytics",
     "main": "dist/GoogleAnalytics4EventForwarderClientSide-Kit.common.js",
diff --git a/packages/GA4Client/src/commerce-handler.js b/packages/GA4Client/src/commerce-handler.js
index e679d5b..7d4bd75 100644
--- a/packages/GA4Client/src/commerce-handler.js
+++ b/packages/GA4Client/src/commerce-handler.js
@@ -202,6 +202,11 @@ CommerceHandler.prototype.logCheckoutOptionEvent = function (
         return false;
     }
 
+    ga4CommerceEventParameters = this.common.mergeObjects(
+        ga4CommerceEventParameters,
+        this.common.limitEventAttributes(event.EventAttributes)
+    );
+
     return this.sendCommerceEventToGA4(
         mapGA4EcommerceEventName(event),
         ga4CommerceEventParameters
diff --git a/packages/GA4Client/test/src/tests.js b/packages/GA4Client/test/src/tests.js
index a9f688c..3823c4d 100644
--- a/packages/GA4Client/test/src/tests.js
+++ b/packages/GA4Client/test/src/tests.js
@@ -1287,6 +1287,92 @@ describe('Google Analytics 4 Event', function () {
                 done();
             });
 
+            it('should include EventAttributes on GA4 add_shipping_info event when CheckoutOption has GA4.CommerceEventType add_shipping_info', function (done) {
+                mParticle.forwarder.process({
+                    CurrencyCode: 'USD',
+                    EventName: 'Test add_shipping_info Event',
+                    EventDataType: MessageType.Commerce,
+                    EventCategory: CommerceEventType.ProductCheckoutOption,
+                    EventAttributes: {
+                        page_url: 'https://example.com/checkout',
+                        page_path: '/checkout',
+                        mpID: '123',
+                        SessionID: 'session-abc',
+                        foo: 'bar',
+                    },
+                    CustomFlags: {
+                        'GA4.CommerceEventType': 'add_shipping_info',
+                        'GA4.ShippingTier': 'ground',
+                    },
+                    ProductAction: {
+                        ProductActionType: ProductActionType.Click,
+                        ProductList: [],
+                    },
+                });
+
+                result = [
+                    'event',
+                    'add_shipping_info',
+                    {
+                        shipping_tier: 'ground',
+                        coupon: null,
+                        items: [],
+                        page_url: 'https://example.com/checkout',
+                        page_path: '/checkout',
+                        mpID: '123',
+                        SessionID: 'session-abc',
+                        foo: 'bar',
+                        send_to: 'testMeasurementId',
+                    },
+                ];
+                window.dataLayer[0].should.eql(result);
+
+                done();
+            });
+
+            it('should include EventAttributes on GA4 add_payment_info event when CheckoutOption has GA4.CommerceEventType add_payment_info', function (done) {
+                mParticle.forwarder.process({
+                    CurrencyCode: 'USD',
+                    EventName: 'Test add_payment_info Event',
+                    EventDataType: MessageType.Commerce,
+                    EventCategory: CommerceEventType.ProductCheckoutOption,
+                    EventAttributes: {
+                        page_url: 'https://example.com/checkout',
+                        page_path: '/checkout',
+                        mpID: '123',
+                        SessionID: 'session-abc',
+                        foo: 'bar',
+                    },
+                    CustomFlags: {
+                        'GA4.CommerceEventType': 'add_payment_info',
+                        'GA4.PaymentType': 'credit-card',
+                    },
+                    ProductAction: {
+                        ProductActionType: ProductActionType.Click,
+                        ProductList: [],
+                    },
+                });
+
+                result = [
+                    'event',
+                    'add_payment_info',
+                    {
+                        payment_type: 'credit-card',
+                        coupon: null,
+                        items: [],
+                        page_url: 'https://example.com/checkout',
+                        page_path: '/checkout',
+                        mpID: '123',
+                        SessionID: 'session-abc',
+                        foo: 'bar',
+                        send_to: 'testMeasurementId',
+                    },
+                ];
+                window.dataLayer[0].should.eql(result);
+
+                done();
+            });
+
             it('should log a view_cart event using ProductActionType.Unknown and a custom flag', function (done) {
                 mParticle.forwarder.process({
                     CurrencyCode: 'USD',