diff --git a/app/Http/Resources/Api/V1/GuiderailModelResource.php b/app/Http/Resources/Api/V1/GuiderailModelResource.php
index ba94ab04..415fe099 100644
--- a/app/Http/Resources/Api/V1/GuiderailModelResource.php
+++ b/app/Http/Resources/Api/V1/GuiderailModelResource.php
@@ -50,7 +50,7 @@ public function toArray(Request $request): array
             'image_file_id' => $this->getImageFileId(),
             'image_url' => $this->getImageUrl(),
             // 부품 조합
-            'components' => $this->enrichComponentsWithImageUrls($components),
+            'components' => $this->enrichComponents($components),
             'material_summary' => $materialSummary,
             'component_count' => count($components),
             // 메타
@@ -88,23 +88,32 @@ private function getImageUrl(): ?string
         return $this->getImageFile()?->presignedUrl();
     }
 
-    private function enrichComponentsWithImageUrls(array $components): array
+    private function enrichComponents(array $components): array
     {
-        $fileIds = array_filter(array_column($components, 'image_file_id'));
-        if (empty($fileIds)) {
-            return $components;
-        }
+        // sam_item_id → 기초자료 품목코드 매핑
+        $itemIds = array_filter(array_column($components, 'sam_item_id'));
+        $itemCodes = ! empty($itemIds)
+            ? \App\Models\BendingItem::withoutGlobalScopes()->whereIn('id', $itemIds)->pluck('code', 'id')->toArray()
+            : [];
 
-        $files = \App\Models\Commons\File::whereIn('id', $fileIds)
-            ->whereNull('deleted_at')
-            ->get()
-            ->keyBy('id');
+        // image_file_id → presigned URL 매핑
+        $fileIds = array_filter(array_column($components, 'image_file_id'));
+        $files = ! empty($fileIds)
+            ? \App\Models\Commons\File::whereIn('id', $fileIds)->whereNull('deleted_at')->get()->keyBy('id')
+            : collect();
 
         foreach ($components as &$comp) {
+            $samId = $comp['sam_item_id'] ?? null;
+            $comp['item_code'] = $samId ? ($itemCodes[$samId] ?? null) : null;
+
             $fileId = $comp['image_file_id'] ?? null;
-            $comp['image_url'] = $fileId && isset($files[$fileId])
-                ? $files[$fileId]->presignedUrl()
-                : null;
+            try {
+                $comp['image_url'] = $fileId && $files->has($fileId)
+                    ? $files[$fileId]->presignedUrl()
+                    : null;
+            } catch (\Throwable) {
+                $comp['image_url'] = null;
+            }
         }
         unset($comp);
 
@@ -122,6 +131,7 @@ private function calcMaterialSummary(array $components): array
                 $summary[$material] = ($summary[$material] ?? 0) + ($widthSum * $qty);
             }
         }
+
         return $summary;
     }
 }