diff --git a/addons/sale_product_configurator/controllers/main.py b/addons/sale_product_configurator/controllers/main.py
index f56e0063cf9..18a45590d79 100644
--- a/addons/sale_product_configurator/controllers/main.py
+++ b/addons/sale_product_configurator/controllers/main.py
@@ -79,7 +79,8 @@ class ProductConfiguratorController(http.Controller):
             'pricelist': pricelist,
             'handle_stock': handle_stock,
             'already_configured': kw.get("already_configured", False),
-            'mode': kw.get('mode', 'add')
+            'mode': kw.get('mode', 'add'),
+            'product_custom_attribute_values': kw.get('product_custom_attribute_values', None)
         })
 
     def _get_pricelist(self, pricelist_id, pricelist_fallback=False):
diff --git a/addons/sale_product_configurator/static/src/js/product_configurator_modal.js b/addons/sale_product_configurator/static/src/js/product_configurator_modal.js
index 03141503491..f3a87d141a4 100644
--- a/addons/sale_product_configurator/static/src/js/product_configurator_modal.js
+++ b/addons/sale_product_configurator/static/src/js/product_configurator_modal.js
@@ -79,6 +79,7 @@ export const OptionalProductsModal = Dialog.extend(ServicesMixin, VariantMixin,
             mode: self.mode,
             product_id: self.rootProduct.product_id,
             variant_values: self.rootProduct.variant_values,
+            product_custom_attribute_values: self.rootProduct.product_custom_attribute_values,
             pricelist_id: self.pricelistId || false,
             add_qty: self.rootProduct.quantity,
             force_dialog: self.forceDialog,
diff --git a/addons/sale_product_configurator/views/templates.xml b/addons/sale_product_configurator/views/templates.xml
index 1a500cb207c..18d52af9fd4 100644
--- a/addons/sale_product_configurator/views/templates.xml
+++ b/addons/sale_product_configurator/views/templates.xml
@@ -104,6 +104,15 @@
                     <div class="text-muted small">
                         <div t-field="product.description_sale"/>
                         <div class="js_attributes"/>
+                        <div t-if="product_custom_attribute_values">
+                            <t t-foreach="product_custom_attribute_values" t-as="custom_value">
+                                <span t-esc="custom_value.get('attribute_value_name', None)"/>: <span t-esc="custom_value['custom_value']"/>
+                                <input type="hidden" class="variant_custom_value"
+                                       t-att-data-custom_product_template_attribute_value_id="custom_value['custom_product_template_attribute_value_id']"
+                                       t-att-data-attribute_value_name="custom_value.get('attribute_value_name', None)"
+                                       t-att-value="custom_value['custom_value']"/>
+                            </t>
+                        </div>
                     </div>
                     <div>
                         <t t-if="product.product_tmpl_id and not combination">