diff --git a/crates/optimism/node/src/node.rs b/crates/optimism/node/src/node.rs
index 1bb57b3652..1ab662e72d 100644
--- a/crates/optimism/node/src/node.rs
+++ b/crates/optimism/node/src/node.rs
@@ -202,6 +202,7 @@ where
     fn add_ons(&self) -> Self::AddOns {
         Self::AddOns::builder()
             .with_sequencer(self.args.sequencer.clone())
+            .with_sequencer_headers(self.args.sequencer_headers.clone())
             .with_da_config(self.da_config.clone())
             .with_enable_tx_conditional(self.args.enable_tx_conditional)
             .build()
@@ -250,6 +251,8 @@ pub struct OpAddOns<
     /// Sequencer client, configured to forward submitted transactions to sequencer of given OP
     /// network.
     pub sequencer_url: Option<String>,
+    /// Headers to use for the sequencer client requests.
+    pub sequencer_headers: Vec<String>,
     /// Enable transaction conditionals.
     enable_tx_conditional: bool,
 }
@@ -298,7 +301,13 @@ where
         self,
         ctx: reth_node_api::AddOnsContext<'_, N>,
     ) -> eyre::Result<Self::Handle> {
-        let Self { rpc_add_ons, da_config, sequencer_url, enable_tx_conditional } = self;
+        let Self {
+            rpc_add_ons,
+            da_config,
+            sequencer_url,
+            sequencer_headers,
+            enable_tx_conditional,
+        } = self;
 
         let builder = reth_optimism_payload_builder::OpPayloadBuilder::new(
             ctx.node.pool().clone(),
@@ -314,7 +323,7 @@ where
         let miner_ext = OpMinerExtApi::new(da_config);
 
         let sequencer_client = if let Some(url) = sequencer_url {
-            Some(SequencerClient::new(url).await?)
+            Some(SequencerClient::new_with_headers(url, sequencer_headers).await?)
         } else {
             None
         };
@@ -411,6 +420,8 @@ pub struct OpAddOnsBuilder<NetworkT> {
     /// Sequencer client, configured to forward submitted transactions to sequencer of given OP
     /// network.
     sequencer_url: Option<String>,
+    /// Headers to use for the sequencer client requests.
+    sequencer_headers: Vec<String>,
     /// Data availability configuration for the OP builder.
     da_config: Option<OpDAConfig>,
     /// Enable transaction conditionals.
@@ -423,6 +434,7 @@ impl<NetworkT> Default for OpAddOnsBuilder<NetworkT> {
     fn default() -> Self {
         Self {
             sequencer_url: None,
+            sequencer_headers: Vec::new(),
             da_config: None,
             enable_tx_conditional: false,
             _nt: PhantomData,
@@ -437,6 +449,12 @@ impl<NetworkT> OpAddOnsBuilder<NetworkT> {
         self
     }
 
+    /// With headers to use for the sequencer client requests.
+    pub fn with_sequencer_headers(mut self, sequencer_headers: Vec<String>) -> Self {
+        self.sequencer_headers = sequencer_headers;
+        self
+    }
+
     /// Configure the data availability configuration for the OP builder.
     pub fn with_da_config(mut self, da_config: OpDAConfig) -> Self {
         self.da_config = Some(da_config);
@@ -457,16 +475,19 @@ impl<NetworkT> OpAddOnsBuilder<NetworkT> {
         N: FullNodeComponents<Types: NodeTypes>,
         OpEthApiBuilder<NetworkT>: EthApiBuilder<N>,
     {
-        let Self { sequencer_url, da_config, enable_tx_conditional, .. } = self;
+        let Self { sequencer_url, sequencer_headers, da_config, enable_tx_conditional, .. } = self;
 
         OpAddOns {
             rpc_add_ons: RpcAddOns::new(
-                OpEthApiBuilder::default().with_sequencer(sequencer_url.clone()),
+                OpEthApiBuilder::default()
+                    .with_sequencer(sequencer_url.clone())
+                    .with_sequencer_headers(sequencer_headers.clone()),
                 OpEngineValidatorBuilder::default(),
                 OpEngineApiBuilder::default(),
             ),
             da_config: da_config.unwrap_or_default(),
             sequencer_url,
+            sequencer_headers,
             enable_tx_conditional,
         }
     }
diff --git a/crates/optimism/rpc/src/eth/mod.rs b/crates/optimism/rpc/src/eth/mod.rs
index 9946361f72..bbd96c1503 100644
--- a/crates/optimism/rpc/src/eth/mod.rs
+++ b/crates/optimism/rpc/src/eth/mod.rs
@@ -314,20 +314,22 @@ pub struct OpEthApiBuilder<NetworkT = Optimism> {
     /// Sequencer client, configured to forward submitted transactions to sequencer of given OP
     /// network.
     sequencer_url: Option<String>,
+    /// Headers to use for the sequencer client requests.
+    sequencer_headers: Vec<String>,
     /// Marker for network types.
     _nt: PhantomData<NetworkT>,
 }
 
 impl<NetworkT> Default for OpEthApiBuilder<NetworkT> {
     fn default() -> Self {
-        Self { sequencer_url: None, _nt: PhantomData }
+        Self { sequencer_url: None, sequencer_headers: Vec::new(), _nt: PhantomData }
     }
 }
 
 impl<NetworkT> OpEthApiBuilder<NetworkT> {
     /// Creates a [`OpEthApiBuilder`] instance from core components.
     pub const fn new() -> Self {
-        Self { sequencer_url: None, _nt: PhantomData }
+        Self { sequencer_url: None, sequencer_headers: Vec::new(), _nt: PhantomData }
     }
 
     /// With a [`SequencerClient`].
@@ -335,6 +337,12 @@ impl<NetworkT> OpEthApiBuilder<NetworkT> {
         self.sequencer_url = sequencer_url;
         self
     }
+
+    /// With headers to use for the sequencer client requests.
+    pub fn with_sequencer_headers(mut self, sequencer_headers: Vec<String>) -> Self {
+        self.sequencer_headers = sequencer_headers;
+        self
+    }
 }
 
 impl<N, NetworkT> EthApiBuilder<N> for OpEthApiBuilder<NetworkT>
@@ -346,7 +354,7 @@ where
     type EthApi = OpEthApi<N, NetworkT>;
 
     async fn build_eth_api(self, ctx: EthApiCtx<'_, N>) -> eyre::Result<Self::EthApi> {
-        let Self { sequencer_url, .. } = self;
+        let Self { sequencer_url, sequencer_headers, .. } = self;
         let eth_api = reth_rpc::EthApiBuilder::new(
             ctx.components.provider().clone(),
             ctx.components.pool().clone(),
@@ -365,7 +373,7 @@ where
 
         let sequencer_client = if let Some(url) = sequencer_url {
             Some(
-                SequencerClient::new(&url)
+                SequencerClient::new_with_headers(&url, sequencer_headers)
                     .await
                     .wrap_err_with(|| "Failed to init sequencer client with: {url}")?,
             )