diff --git a/shared/source/debug_settings/debug_variables_base.inl b/shared/source/debug_settings/debug_variables_base.inl
index bd18faa2ee..f4913ceb4b 100644
--- a/shared/source/debug_settings/debug_variables_base.inl
+++ b/shared/source/debug_settings/debug_variables_base.inl
@@ -31,6 +31,7 @@ DECLARE_DEBUG_VARIABLE(int32_t, ClDeviceGlobalMemSizeAvailablePercent, -1, "Perc
 DECLARE_DEBUG_VARIABLE(int32_t, SetCommandStreamReceiver, -1, "Set command stream receiver to: 0 - HW, 1 - AUB, 2 - TBX, 3 - HW & AUB, 4 - TBX & AUB, 5 - NULL AUB")
 DECLARE_DEBUG_VARIABLE(int32_t, TbxPort, 4321, "TCP-IP port of TBX server")
 DECLARE_DEBUG_VARIABLE(int32_t, HBMSizePerTileInGigabytes, 0, "Size of HBM memory in GigaBytes per tile.")
+DECLARE_DEBUG_VARIABLE(int32_t, MaxSubSlicesSupportedOverride, -1, "Value to override MaxSubSlicesSupported")
 DECLARE_DEBUG_VARIABLE(bool, TbxFrontdoorMode, false, "Set TBX frontdoor mode for read and write memory accesses (the default mode is via backdoor)")
 DECLARE_DEBUG_VARIABLE(bool, FlattenBatchBufferForAUBDump, false, "Dump multi-level batch buffers to AUB as single, flat batch buffer")
 DECLARE_DEBUG_VARIABLE(bool, AddPatchInfoCommentsForAUBDump, false, "Dump comments containing allocations and patching information")
diff --git a/shared/source/os_interface/device_factory.cpp b/shared/source/os_interface/device_factory.cpp
index 0504fc0952..8ad6b43dd2 100644
--- a/shared/source/os_interface/device_factory.cpp
+++ b/shared/source/os_interface/device_factory.cpp
@@ -97,6 +97,11 @@ bool DeviceFactory::prepareDeviceEnvironmentsForProductFamilyOverride(ExecutionE
         setHwInfoValuesFromConfig(hwInfoConfig, *hardwareInfo);
         hardwareInfoSetup[hwInfoConst->platform.eProductFamily](hardwareInfo, true, hwInfoConfig, rootDeviceEnvironment.getReleaseHelper());
 
+        if (debugManager.flags.MaxSubSlicesSupportedOverride.get() > 0) {
+            hardwareInfo->gtSystemInfo.MaxSubSlicesSupported = debugManager.flags.MaxSubSlicesSupportedOverride.get();
+            hardwareInfo->gtSystemInfo.MaxDualSubSlicesSupported = debugManager.flags.MaxSubSlicesSupportedOverride.get();
+        }
+
         if (debugManager.flags.BlitterEnableMaskOverride.get() > 0) {
             hardwareInfo->featureTable.ftrBcsInfo = debugManager.flags.BlitterEnableMaskOverride.get();
         }
diff --git a/shared/test/common/test_files/igdrcl.config b/shared/test/common/test_files/igdrcl.config
index 525a4df5f5..3e9b128a2d 100644
--- a/shared/test/common/test_files/igdrcl.config
+++ b/shared/test/common/test_files/igdrcl.config
@@ -629,4 +629,5 @@ DirectSubmissionSwitchSemaphoreMode = -1
 OverrideTimestampWidth = -1
 IgnoreZebinUnknownAttributes = 0
 FifoPollInterval = -1
+MaxSubSlicesSupportedOverride = -1
 # Please don't edit below this line
diff --git a/shared/test/unit_test/os_interface/hw_info_override_tests.cpp b/shared/test/unit_test/os_interface/hw_info_override_tests.cpp
index da91f2d47a..7179744263 100644
--- a/shared/test/unit_test/os_interface/hw_info_override_tests.cpp
+++ b/shared/test/unit_test/os_interface/hw_info_override_tests.cpp
@@ -43,3 +43,17 @@ HWTEST2_F(HwInfoOverrideTest, givenBlitterEnableMaskOverrideWhenPrepareDeviceEnv
     auto hwInfo = executionEnvironment.rootDeviceEnvironments[0]->getHardwareInfo();
     EXPECT_EQ(hwInfo->featureTable.ftrBcsInfo, 0x6);
 }
+
+TEST_F(HwInfoOverrideTest, givenMaxSubSlicesSupportedOverrideWhenPrepareDeviceEnvironmentsForProductFamilyOverrideThenMaxSubSlicesSupportedValueIsReturned) {
+    DebugManagerStateRestore stateRestore;
+    debugManager.flags.MaxSubSlicesSupportedOverride.set(128);
+
+    MockExecutionEnvironment executionEnvironment{};
+
+    bool success = DeviceFactory::prepareDeviceEnvironmentsForProductFamilyOverride(executionEnvironment);
+    EXPECT_TRUE(success);
+
+    auto hwInfo = executionEnvironment.rootDeviceEnvironments[0]->getHardwareInfo();
+    EXPECT_EQ(hwInfo->gtSystemInfo.MaxSubSlicesSupported, 128u);
+    EXPECT_EQ(hwInfo->gtSystemInfo.MaxDualSubSlicesSupported, 128u);
+}
\ No newline at end of file