diff --git a/Cargo.lock b/Cargo.lock
index 9ee3e80efd..7f0235a06b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3910,6 +3910,8 @@ dependencies = [
  "rand",
  "rand_distr",
  "read_buffer",
+ "regex",
+ "router",
  "schema",
  "serde",
  "serde_json",
diff --git a/server/Cargo.toml b/server/Cargo.toml
index 07451e2c12..21349b7358 100644
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -59,6 +59,8 @@ write_buffer = { path = "../write_buffer" }
 workspace-hack = { path = "../workspace-hack"}
 
 [dev-dependencies] # In alphabetical order
+regex = "1.4"
+router = { path = "../router" }
 test_helpers = { path = "../test_helpers" }
 
 [features]
diff --git a/server/tests/write_buffer_delete.rs b/server/tests/write_buffer_delete.rs
index 9f6bcf85d2..c09be30957 100644
--- a/server/tests/write_buffer_delete.rs
+++ b/server/tests/write_buffer_delete.rs
@@ -1,20 +1,28 @@
+use std::collections::BTreeMap;
 use std::num::NonZeroU32;
 use std::sync::Arc;
 use std::time::{Duration, Instant};
 
 use arrow_util::assert_batches_eq;
 use data_types::delete_predicate::{DeleteExpr, DeletePredicate, Op, Scalar};
+use data_types::router::{
+    Matcher, MatcherToShard, QuerySinks, Router as RouterConfig, ShardConfig, ShardId, WriteSink,
+    WriteSinkSet, WriteSinkVariant,
+};
 use data_types::server_id::ServerId;
 use data_types::timestamp::TimestampRange;
 use data_types::DatabaseName;
 use dml::{DmlDelete, DmlOperation, DmlWrite};
 use generated_types::influxdata::iox::{
-    management::v1::{DatabaseRules, LifecycleRules},
+    management::v1::DatabaseRules,
     write_buffer::v1::{write_buffer_connection::Direction, WriteBufferConnection},
 };
 use mutable_batch_lp::lines_to_batches;
 use query::exec::ExecutionContextProvider;
 use query::frontend::sql::SqlQueryPlanner;
+use regex::Regex;
+use router::router::Router;
+use router::server::RouterServer;
 use server::connection::test_helpers::TestConnectionManager;
 use server::rules::ProvidedDatabaseRules;
 use server::test_utils::{make_application, make_initialized_server};
@@ -34,10 +42,7 @@ use write_buffer::mock::MockBufferSharedState;
 /// It primarily exists to test the routing logic.
 ///
 struct DistributedTest {
-    db_name: DatabaseName<'static>,
-    router: Arc<Server<TestConnectionManager>>,
-    // TODO: Replace with router (#2980)
-    router_db: Arc<Db>,
+    router: Arc<Router>,
 
     consumer: Arc<Server<TestConnectionManager>>,
     consumer_db: Arc<Db>,
@@ -63,26 +68,41 @@ impl DistributedTest {
         };
 
         // Create a router
+        let router_server = RouterServer::for_testing(
+            None,
+            None,
+            Arc::clone(application.time_provider()),
+            Some(Arc::clone(application.write_buffer_factory())),
+        )
+        .await;
         let router_id = ServerId::new(NonZeroU32::new(1).unwrap());
-        let router = make_initialized_server(router_id, Arc::clone(&application)).await;
+        router_server.set_server_id(router_id).unwrap();
 
-        let router_db = router
-            .create_database(
-                ProvidedDatabaseRules::new_rules(DatabaseRules {
-                    name: db_name.to_string(),
-                    write_buffer_connection: Some(write_buffer_connection.clone()),
-                    lifecycle_rules: Some(LifecycleRules {
-                        immutable: true,
-                        ..Default::default()
-                    }),
-                    ..Default::default()
-                })
-                .unwrap(),
-            )
-            .await
-            .unwrap()
-            .initialized_db()
-            .unwrap();
+        router_server.update_router(RouterConfig {
+            name: db_name.to_string(),
+            write_sharder: ShardConfig {
+                specific_targets: vec![MatcherToShard {
+                    matcher: Matcher {
+                        table_name_regex: Some(Regex::new(".*").unwrap()),
+                    },
+                    shard: ShardId::new(1),
+                }],
+                hash_ring: None,
+            },
+            write_sinks: BTreeMap::from([(
+                ShardId::new(1),
+                WriteSinkSet {
+                    sinks: vec![WriteSink {
+                        sink: WriteSinkVariant::WriteBuffer(
+                            write_buffer_connection.clone().try_into().unwrap(),
+                        ),
+                        ignore_errors: false,
+                    }],
+                },
+            )]),
+            query_sinks: QuerySinks::default(),
+        });
+        let router = router_server.router(db_name).unwrap();
 
         // Create a consumer
         let consumer_id = ServerId::new(NonZeroU32::new(2).unwrap());
@@ -105,9 +125,7 @@ impl DistributedTest {
             .unwrap();
 
         Self {
-            db_name: db_name.clone(),
             router,
-            router_db,
             consumer,
             consumer_db,
         }
@@ -136,18 +154,18 @@ impl DistributedTest {
     /// Write line protocol
     pub async fn write(&self, lp: &str) {
         self.router
-            .write(
-                &self.db_name,
-                DmlWrite::new(lines_to_batches(lp, 0).unwrap(), Default::default()),
-            )
+            .write(DmlOperation::Write(DmlWrite::new(
+                lines_to_batches(lp, 0).unwrap(),
+                Default::default(),
+            )))
             .await
             .unwrap();
     }
 
     pub async fn delete(&self, delete: DmlDelete) {
         // TODO: Write to router not Db (#2980)
-        self.router_db
-            .route_operation(&DmlOperation::Delete(delete))
+        self.router
+            .write(DmlOperation::Delete(delete))
             .await
             .unwrap();
     }
@@ -164,9 +182,7 @@ impl DistributedTest {
 
     /// Shuts down the fixture and waits for the servers to exit
     pub async fn drain(&self) {
-        self.router.shutdown();
         self.consumer.shutdown();
-        self.router.join().await.unwrap();
         self.consumer.join().await.unwrap();
     }
 }