diff --git a/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/features/BasicDriverFeatureStep.scala b/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/features/BasicDriverFeatureStep.scala
index cec8272bee..7f34f30d59 100644
--- a/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/features/BasicDriverFeatureStep.scala
+++ b/resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/features/BasicDriverFeatureStep.scala
@@ -96,7 +96,7 @@ private[spark] class BasicDriverFeatureStep(conf: KubernetesDriverConf)
     val driverPort = conf.sparkConf.getInt(DRIVER_PORT.key, DEFAULT_DRIVER_PORT)
     val driverBlockManagerPort = conf.sparkConf.getInt(
       DRIVER_BLOCK_MANAGER_PORT.key,
-      DEFAULT_BLOCKMANAGER_PORT
+      conf.sparkConf.getInt(BLOCK_MANAGER_PORT.key, DEFAULT_BLOCKMANAGER_PORT)
     )
     val driverUIPort = SparkUI.getUIPort(conf.sparkConf)
     val driverContainer = new ContainerBuilder(pod.container)
diff --git a/resource-managers/kubernetes/core/src/test/scala/org/apache/spark/deploy/k8s/features/BasicDriverFeatureStepSuite.scala b/resource-managers/kubernetes/core/src/test/scala/org/apache/spark/deploy/k8s/features/BasicDriverFeatureStepSuite.scala
index 858b4f1494..f0843225ea 100644
--- a/resource-managers/kubernetes/core/src/test/scala/org/apache/spark/deploy/k8s/features/BasicDriverFeatureStepSuite.scala
+++ b/resource-managers/kubernetes/core/src/test/scala/org/apache/spark/deploy/k8s/features/BasicDriverFeatureStepSuite.scala
@@ -213,6 +213,25 @@ class BasicDriverFeatureStepSuite extends SparkFunSuite {
     }
   }
 
+  test("SPARK-35493: make spark.blockManager.port be able to be fallen back to in driver pod") {
+    val initPod = SparkPod.initialPod()
+    val sparkConf = new SparkConf()
+      .set(CONTAINER_IMAGE, "spark-driver:latest")
+      .set(BLOCK_MANAGER_PORT, 1234)
+    val driverConf1 = KubernetesTestConf.createDriverConf(sparkConf)
+    val pod1 = new BasicDriverFeatureStep(driverConf1).configurePod(initPod)
+    val portMap1 =
+      pod1.container.getPorts.asScala.map { cp => (cp.getName -> cp.getContainerPort) }.toMap
+    assert(portMap1(BLOCK_MANAGER_PORT_NAME) === 1234, s"fallback to $BLOCK_MANAGER_PORT.key")
+
+    val driverConf2 =
+      KubernetesTestConf.createDriverConf(sparkConf.set(DRIVER_BLOCK_MANAGER_PORT, 1235))
+    val pod2 = new BasicDriverFeatureStep(driverConf2).configurePod(initPod)
+    val portMap2 =
+      pod2.container.getPorts.asScala.map { cp => (cp.getName -> cp.getContainerPort) }.toMap
+    assert(portMap2(BLOCK_MANAGER_PORT_NAME) === 1235)
+  }
+
   def containerPort(name: String, portNumber: Int): ContainerPort =
     new ContainerPortBuilder()
       .withName(name)