diff --git a/src/gcp/runv2.spec.ts b/src/gcp/runv2.spec.ts
index c35e4b44efc..4ea71fb0915 100644
--- a/src/gcp/runv2.spec.ts
+++ b/src/gcp/runv2.spec.ts
@@ -470,6 +470,87 @@ describe("runv2", () => {
 
       expect(runv2.endpointFromService(service)).to.deep.equal(expectedEndpoint);
     });
+
+    it("should normalize ID for GCF v2 services to use dashes", () => {
+      const service: Omit<runv2.Service, runv2.ServiceOutputFields> = {
+        ...BASE_RUN_SERVICE,
+        name: `projects/${PROJECT_ID}/locations/${LOCATION}/services/${SERVICE_ID}`,
+        labels: {
+          [runv2.RUNTIME_LABEL]: latest("nodejs"),
+          [runv2.CLIENT_NAME_LABEL]: "cloud-functions",
+        },
+        annotations: {
+          [runv2.FUNCTION_ID_ANNOTATION]: "v2.helloWorldNode",
+        },
+        template: {
+          containers: [
+            {
+              name: "worker",
+              image: IMAGE_URI,
+              resources: { limits: { cpu: "1", memory: "256Mi" } },
+            },
+          ],
+        },
+      };
+
+      const result = runv2.endpointFromService(service);
+      expect(result.platform).to.equal("gcfv2");
+      expect(result.id).to.equal("v2-helloWorldNode");
+    });
+
+    it("should NOT normalize underscores in ID for GCF v2 services", () => {
+      const service: Omit<runv2.Service, runv2.ServiceOutputFields> = {
+        ...BASE_RUN_SERVICE,
+        name: `projects/${PROJECT_ID}/locations/${LOCATION}/services/${SERVICE_ID}`,
+        labels: {
+          [runv2.RUNTIME_LABEL]: latest("nodejs"),
+          [runv2.CLIENT_NAME_LABEL]: "cloud-functions",
+        },
+        annotations: {
+          [runv2.FUNCTION_ID_ANNOTATION]: "v2_helloWorldNode",
+        },
+        template: {
+          containers: [
+            {
+              name: "worker",
+              image: IMAGE_URI,
+              resources: { limits: { cpu: "1", memory: "256Mi" } },
+            },
+          ],
+        },
+      };
+
+      const result = runv2.endpointFromService(service);
+      expect(result.platform).to.equal("gcfv2");
+      expect(result.id).to.equal("v2_helloWorldNode");
+    });
+
+    it("should NOT normalize ID for non-GCF services", () => {
+      const service: Omit<runv2.Service, runv2.ServiceOutputFields> = {
+        ...BASE_RUN_SERVICE,
+        name: `projects/${PROJECT_ID}/locations/${LOCATION}/services/${SERVICE_ID}`,
+        labels: {
+          [runv2.RUNTIME_LABEL]: latest("nodejs"),
+          [runv2.CLIENT_NAME_LABEL]: "firebase-functions",
+        },
+        annotations: {
+          [runv2.FUNCTION_ID_ANNOTATION]: "v2.helloWorldNode",
+        },
+        template: {
+          containers: [
+            {
+              name: "worker",
+              image: IMAGE_URI,
+              resources: { limits: { cpu: "1", memory: "256Mi" } },
+            },
+          ],
+        },
+      };
+
+      const result = runv2.endpointFromService(service);
+      expect(result.platform).to.equal("run");
+      expect(result.id).to.equal("v2.helloWorldNode");
+    });
   });
 
   describe("listServices", () => {
diff --git a/src/gcp/runv2.ts b/src/gcp/runv2.ts
index 5b3a2117269..6e3becfc46f 100644
--- a/src/gcp/runv2.ts
+++ b/src/gcp/runv2.ts
@@ -585,23 +585,33 @@ export function endpointFromService(service: Omit<Service, ServiceOutputFields>)
     (e) => "value" in e,
   ) as [PlaintextEnvVar[], SecretEnvVar[]];
 
-  const id =
+  const platform =
+    service.labels?.[CLIENT_NAME_LABEL] === "cloud-functions" ||
+    service.labels?.[CLIENT_NAME_LABEL] === "cloudfunctions"
+      ? "gcfv2"
+      : "run";
+
+  const rawId =
     metadata.functionId ||
     service.annotations?.[FUNCTION_ID_ANNOTATION] ||
     service.annotations?.[FUNCTION_TARGET_ANNOTATION] ||
     env.find((e) => e.name === FUNCTION_TARGET_ENV)?.value ||
     svcId;
+  // GCF v2 API normalizes function IDs by replacing dots with dashes (e.g. 'v2.helloWorld'
+  // -> 'v2-helloWorld') because GCF resource names do not allow dots.
+  // We must normalize IDs loaded from Cloud Run services for GCF v2 to match this behavior,
+  // preventing duplicate endpoints in the existing backend. We do NOT normalize for 'run'
+  // platform (like Dart functions) because their local specs preserve the original IDs.
+  // Note: GCF v2 does support underscores, so we only normalize dots.
+  const id = (platform === "gcfv2" ? rawId?.replace(/\./g, "-") : rawId) ?? "";
+
   const memory = mebibytes(service.template.containers![0]!.resources!.limits!.memory!);
   if (!backend.isValidMemoryOption(memory)) {
     logger.debug("Converting a service to an endpoint with an invalid memory option", memory);
   }
   const cpu = Number(service.template.containers![0]!.resources!.limits!.cpu);
   const endpoint: backend.Endpoint = {
-    platform:
-      service.labels?.[CLIENT_NAME_LABEL] === "cloud-functions" ||
-      service.labels?.[CLIENT_NAME_LABEL] === "cloudfunctions"
-        ? "gcfv2"
-        : "run",
+    platform,
     id,
     project,
     labels: { ...service.labels, "deployment-tool": "cli-firebase" },