diff --git a/tests/model_executor/layers/test_quark_ocp_mx_moe.py b/tests/model_executor/layers/test_quark_ocp_mx_moe.py
new file mode 100644
index 000000000000..9c5a23e51e9f
--- /dev/null
+++ b/tests/model_executor/layers/test_quark_ocp_mx_moe.py
@@ -0,0 +1,98 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+from types import SimpleNamespace
+from unittest.mock import MagicMock
+
+import pytest
+import torch
+
+from vllm.model_executor.layers.quantization.quark import quark_moe
+
+
+def _make_method() -> quark_moe.QuarkOCP_MX_MoEMethod:
+    method = object.__new__(quark_moe.QuarkOCP_MX_MoEMethod)
+    method.moe_kernel = None
+    method.emulate = False
+    method.moe_quant_config = object()
+    return method
+
+
+def _make_layer(apply_router_weight_on_input: bool = True) -> SimpleNamespace:
+    return SimpleNamespace(
+        w13_weight=torch.randn(2, 4, 4),
+        w2_weight=torch.randn(2, 4, 4),
+        activation=quark_moe.MoEActivation.SILU,
+        global_num_experts=2,
+        apply_router_weight_on_input=apply_router_weight_on_input,
+        expert_map=None,
+        moe_config=SimpleNamespace(),
+    )
+
+
+def test_quark_ocp_mx_moe_aiter_apply_forwards_router_weight_flag(
+    monkeypatch: pytest.MonkeyPatch,
+):
+    method = _make_method()
+    layer = _make_layer()
+    x = torch.randn(3, 4)
+    topk_weights = torch.randn(3, 2)
+    topk_ids = torch.tensor([[0, 1], [1, 0], [0, 1]], dtype=torch.int32)
+    expected = torch.randn(3, 4)
+
+    aiter_mock = MagicMock(return_value=expected)
+
+    monkeypatch.setattr(
+        "vllm.model_executor.layers.fused_moe.rocm_aiter_fused_moe.rocm_aiter_fused_experts",  # noqa: E501
+        aiter_mock,
+    )
+
+    result = method.apply(layer, x, topk_weights, topk_ids, shared_experts_input=None)
+
+    assert result is expected
+    aiter_mock.assert_called_once()
+    assert aiter_mock.call_args.args == (
+        x,
+        layer.w13_weight,
+        layer.w2_weight,
+    )
+    assert aiter_mock.call_args.kwargs == {
+        "topk_weights": topk_weights,
+        "topk_ids": topk_ids,
+        "activation": layer.activation,
+        "apply_router_weight_on_input": layer.apply_router_weight_on_input,
+        "quant_config": method.moe_quant_config,
+        "moe_config": layer.moe_config,
+        "expert_map": layer.expert_map,
+    }
+
+
+def test_quark_ocp_mx_moe_does_not_runtime_fallback_after_aiter_error(
+    monkeypatch: pytest.MonkeyPatch,
+):
+    method = _make_method()
+    layer = _make_layer()
+    x = torch.randn(3, 4)
+    topk_weights = torch.randn(3, 2)
+    topk_ids = torch.tensor([[0, 1], [1, 0], [0, 1]], dtype=torch.int32)
+
+    aiter_mock = MagicMock(
+        side_effect=RuntimeError("Unsupported kernel config for moe heuristic dispatch")
+    )
+    fused_mock = MagicMock()
+
+    monkeypatch.setattr(
+        "vllm.model_executor.layers.fused_moe.rocm_aiter_fused_moe.rocm_aiter_fused_experts",  # noqa: E501
+        aiter_mock,
+    )
+    monkeypatch.setattr(
+        "vllm.model_executor.layers.fused_moe.fused_experts",
+        fused_mock,
+    )
+
+    with pytest.raises(RuntimeError, match="Unsupported kernel config"):
+        method.apply(layer, x, topk_weights, topk_ids, shared_experts_input=None)
+
+    assert method.emulate is False
+    aiter_mock.assert_called_once()
+    fused_mock.assert_not_called()
diff --git a/vllm/model_executor/layers/quantization/quark/quark_moe.py b/vllm/model_executor/layers/quantization/quark/quark_moe.py
index 1eeca142343b..e5fce5bb0f36 100644
--- a/vllm/model_executor/layers/quantization/quark/quark_moe.py
+++ b/vllm/model_executor/layers/quantization/quark/quark_moe.py
@@ -1449,6 +1449,7 @@ def apply(
             topk_weights=topk_weights,
             topk_ids=topk_ids,
             activation=layer.activation,
+            apply_router_weight_on_input=layer.apply_router_weight_on_input,
             quant_config=self.moe_quant_config,
             moe_config=layer.moe_config,
             expert_map=layer.expert_map,