diff --git a/ram/portal/templates/cards.html b/ram/portal/templates/cards.html
index 1ba79c5..4c106d6 100644
--- a/ram/portal/templates/cards.html
+++ b/ram/portal/templates/cards.html
@@ -68,8 +68,8 @@
                     <td><a href="{% url 'filtered' _filter="scale" search=d.scale.slug %}"><abbr title="{{ d.scale.ratio }} - {{ d.scale.tracks }}">{{ d.scale }}</abbr></a></td>
                   </tr>
                   <tr>
-                    <th scope="row">SKU</th>
-                    <td>{{ d.sku }}</td>
+                    <th scope="row">Item number</th>
+                    <td>{{ d.item_number }}</td>
                   </tr>
                 </tbody>
               </table>
diff --git a/ram/portal/templates/rollingstock.html b/ram/portal/templates/rollingstock.html
index 5329dca..fd8827a 100644
--- a/ram/portal/templates/rollingstock.html
+++ b/ram/portal/templates/rollingstock.html
@@ -105,8 +105,8 @@
                         <td><a href="{% url 'filtered' _filter="scale" search=rolling_stock.scale %}"><abbr title="{{ rolling_stock.scale.ratio }} - {{ rolling_stock.scale.tracks }}">{{ rolling_stock.scale }}</abbr></a></td>
                       </tr>
                       <tr>
-                        <th scope="row">SKU</th>
-                        <td>{{ rolling_stock.sku }}</td>
+                        <th scope="row">Item number</th>
+                        <td>{{ rolling_stock.item_number }}</td>
                       </tr>
                     </tbody>
                   </table>
@@ -155,8 +155,8 @@
                         <td><a href="{% url 'filtered' _filter="scale" search=rolling_stock.scale %}"><abbr title="{{ rolling_stock.scale.ratio }} - {{ rolling_stock.scale.tracks }}">{{ rolling_stock.scale }}</abbr></a></td>
                       </tr>
                       <tr>
-                        <th scope="row">SKU</th>
-                        <td>{{ rolling_stock.sku }}</td>
+                        <th scope="row">Item number</th>
+                        <td>{{ rolling_stock.item_number }}</td>
                       </tr>
                       <tr>
                         <th scope="row">Era</th>
diff --git a/ram/portal/views.py b/ram/portal/views.py
index 26cfd2b..b7f56df 100644
--- a/ram/portal/views.py
+++ b/ram/portal/views.py
@@ -80,7 +80,7 @@ class SearchRoster(View):
                         | Q(rolling_class__description__icontains=s)
                         | Q(rolling_class__type__type__icontains=s)
                         | Q(road_number__icontains=s)
-                        | Q(sku=s)
+                        | Q(item_number=s)
                         | Q(rolling_class__company__name__icontains=s)
                         | Q(rolling_class__company__country__icontains=s)
                         | Q(manufacturer__name__icontains=s)
diff --git a/ram/roster/admin.py b/ram/roster/admin.py
index 3343c9a..6322f75 100644
--- a/ram/roster/admin.py
+++ b/ram/roster/admin.py
@@ -68,7 +68,7 @@ class RollingStockDocumentAdmin(admin.ModelAdmin):
     )
     search_fields = (
         "rolling_stock__rolling_class__identifier",
-        "rolling_stock__sku",
+        "rolling_stock__item_number",
         "description",
         "file",
     )
@@ -89,7 +89,7 @@ class RollingJournalDocumentAdmin(admin.ModelAdmin):
     search_fields = (
         "rolling_stock__rolling_class__identifier",
         "rolling_stock__road_number",
-        "rolling_stock__sku",
+        "rolling_stock__item_number",
         "log",
     )
 
@@ -108,7 +108,7 @@ class RollingStockAdmin(SortableAdminBase, admin.ModelAdmin):
         "address",
         "manufacturer",
         "scale",
-        "sku",
+        "item_number",
         "company",
         "country",
     )
@@ -125,7 +125,7 @@ class RollingStockAdmin(SortableAdminBase, admin.ModelAdmin):
         "manufacturer__name",
         "road_number",
         "address",
-        "sku",
+        "item_number",
     )
     save_as = True
 
@@ -138,7 +138,7 @@ class RollingStockAdmin(SortableAdminBase, admin.ModelAdmin):
                     "road_number",
                     "scale",
                     "manufacturer",
-                    "sku",
+                    "item_number",
                     "era",
                     "production_year",
                     "purchase_date",
diff --git a/ram/roster/migrations/0018_rename_sku_rollingstock_item_number.py b/ram/roster/migrations/0018_rename_sku_rollingstock_item_number.py
new file mode 100644
index 0000000..45feed6
--- /dev/null
+++ b/ram/roster/migrations/0018_rename_sku_rollingstock_item_number.py
@@ -0,0 +1,18 @@
+# Generated by Django 4.2.5 on 2023-10-01 19:32
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("roster", "0017_remove_rollingstockimage_is_thumbnail"),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name="rollingstock",
+            old_name="sku",
+            new_name="item_number",
+        ),
+    ]
diff --git a/ram/roster/models.py b/ram/roster/models.py
index 8b99b9c..e2d336e 100644
--- a/ram/roster/models.py
+++ b/ram/roster/models.py
@@ -82,7 +82,7 @@ class RollingStock(models.Model):
         limit_choices_to={"category": "model"},
     )
     scale = models.ForeignKey(Scale, on_delete=models.CASCADE)
-    sku = models.CharField(max_length=32, blank=True)
+    item_number = models.CharField(max_length=32, blank=True)
     decoder_interface = models.PositiveSmallIntegerField(
         choices=settings.DECODER_INTERFACES, null=True, blank=True
     )