diff --git a/pkg/controller/bootimage/boot_image_controller.go b/pkg/controller/bootimage/boot_image_controller.go
index 9c9eee0371..79d0390a81 100644
--- a/pkg/controller/bootimage/boot_image_controller.go
+++ b/pkg/controller/bootimage/boot_image_controller.go
@@ -118,8 +118,12 @@ const (
 	// Labels and Annotations required for determining architecture of a machineset
 	MachineSetArchAnnotationKey = "capacity.cluster-autoscaler.kubernetes.io/labels"
 
-	ArchLabelKey = "kubernetes.io/arch="
-	OSLabelKey   = "machine.openshift.io/os-id"
+	ArchLabelKey     = "kubernetes.io/arch="
+	OSLabelKey       = "machine.openshift.io/os-id"
+	OSStreamLabelKey = "machineconfiguration.openshift.io/osstream"
+
+	// Stream currently supported by the MCO's boot image controller
+	SupportedOSStream = "rhel-9"
 
 	// Threshold for hot loop detection
 	HotLoopLimit = 3
diff --git a/pkg/controller/bootimage/cpms_helpers.go b/pkg/controller/bootimage/cpms_helpers.go
index 59a0774e62..ac25c0f8ff 100644
--- a/pkg/controller/bootimage/cpms_helpers.go
+++ b/pkg/controller/bootimage/cpms_helpers.go
@@ -111,13 +111,23 @@ func (ctrl *Controller) syncControlPlaneMachineSet(controlPlaneMachineSet *machi
 		klog.V(4).Infof("Finished syncing ControlPlaneMachineSet %q (%v)", controlPlaneMachineSet.Name, time.Since(startTime))
 	}()
 
-	// If the machineset has an owner reference, exit and report error. This means
+	// If the machineset has an owner reference, exit and log error. This means
 	// that the machineset may be managed by another workflow and should not be reconciled.
 	if len(controlPlaneMachineSet.GetOwnerReferences()) != 0 {
-		klog.Infof("ControlPlaneMachineSet %s has OwnerReference: %v, skipping boot image update", controlPlaneMachineSet.GetOwnerReferences()[0].Kind+"/"+controlPlaneMachineSet.GetOwnerReferences()[0].Name, controlPlaneMachineSet.Name)
+		klog.Infof("ControlPlaneMachineSet %s has OwnerReference: %v, skipping boot image update", controlPlaneMachineSet.Name, controlPlaneMachineSet.GetOwnerReferences()[0].Kind+"/"+controlPlaneMachineSet.GetOwnerReferences()[0].Name)
 		return nil
 	}
 
+	// Skip if the ControlPlaneMachineSet has a label designating a non default stream. If no stream label is defined,
+	// this is an older, pre "dual stream" ControlPlaneMachineSet and should be reconciled.
+	if streamLabel, ok := controlPlaneMachineSet.GetLabels()[OSStreamLabelKey]; ok {
+		if streamLabel != SupportedOSStream {
+			klog.Infof("ControlPlaneMachineSet %s has unsupported stream: %v, skipping boot image update", controlPlaneMachineSet.Name, streamLabel)
+			return nil
+		}
+	}
+
+	// Skip if this is a windows ControlPlaneMachineSet.
 	if os, ok := controlPlaneMachineSet.Spec.Template.OpenShiftMachineV1Beta1Machine.Spec.Labels[OSLabelKey]; ok {
 		if os == "Windows" {
 			klog.Infof("ControlPlaneMachineSet %s has a windows os label, skipping boot image update", controlPlaneMachineSet.Name)
diff --git a/pkg/controller/bootimage/ms_helpers.go b/pkg/controller/bootimage/ms_helpers.go
index 5b5c68f68f..0190ffbd22 100644
--- a/pkg/controller/bootimage/ms_helpers.go
+++ b/pkg/controller/bootimage/ms_helpers.go
@@ -111,13 +111,25 @@ func (ctrl *Controller) syncMAPIMachineSet(machineSet *machinev1beta1.MachineSet
 		klog.V(4).Infof("Finished syncing MAPI machineset %q (%v)", machineSet.Name, time.Since(startTime))
 	}()
 
-	// If the machineset has an owner reference, exit and report error. This means
+	// If the machineset has an owner reference, exit and log error. This means
 	// that the machineset may be managed by another workflow and should not be reconciled.
 	if len(machineSet.GetOwnerReferences()) != 0 {
-		klog.Infof("machineset %s has OwnerReference: %v, skipping boot image update", machineSet.GetOwnerReferences()[0].Kind+"/"+machineSet.GetOwnerReferences()[0].Name, machineSet.Name)
+		klog.Infof("machineset %s has OwnerReference: %v, skipping boot image update", machineSet.Name, machineSet.GetOwnerReferences()[0].Kind+"/"+machineSet.GetOwnerReferences()[0].Name)
 		return true, nil
 	}
 
+	// Skip if the machineset has a label designating a non default stream. Not counted as skipped
+	// since the MCO intentionally excludes non-default streams. If no stream label is defined,
+	// this is an older, pre "dual stream" machineset and should be reconciled.
+	if streamLabel, ok := machineSet.GetLabels()[OSStreamLabelKey]; ok {
+		if streamLabel != SupportedOSStream {
+			klog.Infof("machineset %s has unsupported stream: %v, skipping boot image update", machineSet.Name, streamLabel)
+			return false, nil
+		}
+	}
+
+	// Skip if this is a windows machineset. Not counted as skipped since the MCO
+	// intentionally excludes Windows machinesets.
 	if os, ok := machineSet.Spec.Template.Labels[OSLabelKey]; ok {
 		if os == "Windows" {
 			klog.Infof("machineset %s has a windows os label, skipping boot image update", machineSet.Name)