diff --git a/nautobot_device_lifecycle_mgmt/filter_extensions.py b/nautobot_device_lifecycle_mgmt/filter_extensions.py
new file mode 100644
index 00000000..7b6cf9a8
--- /dev/null
+++ b/nautobot_device_lifecycle_mgmt/filter_extensions.py
@@ -0,0 +1,30 @@
+"""Extensions to core filters."""
+
+from django_filters import BooleanFilter
+
+try:
+    from nautobot.apps.filters import FilterExtension
+except ImportError:
+    from nautobot.extras.plugins import PluginFilterExtension as FilterExtension
+
+
+def distinct_filter(queryset, _, value):
+    """Returns distinct Inventory Items by part_id."""
+    if value:
+        return queryset.order_by().distinct("part_id")
+    return queryset
+
+
+class InventoryItemFilterExtension(FilterExtension):  # pylint: disable=too-few-public-methods
+    """Extends Inventory Item Filters."""
+
+    model = "dcim.inventoryitem"
+
+    filterset_fields = {
+        "nautobot_device_lifecycle_mgmt_distinct_part_id": BooleanFilter(
+            method=distinct_filter, label="_dpid_dlm_app_internal_use_only"
+        )
+    }
+
+
+filter_extensions = [InventoryItemFilterExtension]
diff --git a/nautobot_device_lifecycle_mgmt/forms.py b/nautobot_device_lifecycle_mgmt/forms.py
index b9a8a94d..49216dfb 100644
--- a/nautobot_device_lifecycle_mgmt/forms.py
+++ b/nautobot_device_lifecycle_mgmt/forms.py
@@ -28,6 +28,7 @@
     add_blank_choice,
     StaticSelect2Multiple,
 )
+from nautobot.utilities.forms.fields import DynamicModelChoiceMixin
 
 from nautobot_device_lifecycle_mgmt.choices import (
     ContractTypeChoices,
@@ -65,16 +66,29 @@ def prepare_value(self, value):
         return super().prepare_value(pk_list)
 
 
+class HardwareLCMDynamicModelChoiceField(DynamicModelChoiceMixin, forms.ModelChoiceField):
+    """DynamicModelChoiceField used for 'inventory_item' field in HardwareLCMForm."""
+
+    def to_python(self, value):
+        """Overload 'to_python' in forms.ModelChoiceField to force returning 'part_id' as the field value."""
+        if value in self.empty_values:
+            return None
+        if self.to_field_name == "part_id":
+            return value
+        return super().to_python(value)
+
+
 class HardwareLCMForm(BootstrapMixin, CustomFieldModelFormMixin, RelationshipModelFormMixin):
     """Hardware Device Lifecycle creation/edit form."""
 
-    inventory_item = forms.ModelChoiceField(
-        queryset=InventoryItem.objects.exclude(part_id__exact="")
-        .distinct()
-        .order_by("part_id")
-        .values_list("part_id", flat=True),
+    device_type = DynamicModelChoiceField(queryset=DeviceType.objects.all(), required=False)
+    inventory_item = HardwareLCMDynamicModelChoiceField(
+        queryset=InventoryItem.objects.order_by().distinct("part_id"),
+        query_params={"part_id__nre": "^$", "nautobot_device_lifecycle_mgmt_distinct_part_id": "true"},
         label="Inventory Part ID",
+        display_field="part_id",
         to_field_name="part_id",
+        brief_mode=False,
         required=False,
     )
 
@@ -131,11 +145,11 @@ class HardwareLCMFilterForm(BootstrapMixin, forms.ModelForm):
         required=False, queryset=DeviceType.objects.all(), to_field_name="slug"
     )
 
-    inventory_item = forms.ModelMultipleChoiceField(
-        queryset=HardwareLCM.objects.exclude(inventory_item__isnull=True)
-        .exclude(inventory_item__exact="")
-        .values_list("inventory_item", flat=True),
+    inventory_item = DynamicModelMultipleChoiceField(
+        queryset=HardwareLCM.objects.exclude(inventory_item__isnull=True).exclude(inventory_item__exact=""),
         label="Inventory Part ID",
+        display_field="inventory_item",
+        to_field_name="inventory_item",
         required=False,
     )
 
diff --git a/tasks.py b/tasks.py
index 66e9fdc9..d660e025 100644
--- a/tasks.py
+++ b/tasks.py
@@ -39,7 +39,7 @@ def is_truthy(arg):
 namespace.configure(
     {
         "nautobot_device_lifecycle_mgmt": {
-            "nautobot_ver": "1.5.4",
+            "nautobot_ver": "1.6.26",
             "project_name": "nautobot_device_lifecycle_mgmt",
             "python_ver": "3.8",
             "local": False,