diff --git a/.wp-env.json b/.wp-env.json
index 9fcd523a6a..b99ff44f2f 100644
--- a/.wp-env.json
+++ b/.wp-env.json
@@ -47,7 +47,7 @@
         "wp-content/plugins/multiple-required-features.php": "./tests/e2e/src/wordpress-files/test-plugins/multiple-required-features.php",
         "wp-content/uploads/content-example.xml": "./tests/e2e/src/wordpress-files/test-docs/content-example.xml",
         "wp-content/plugins/echo-shortcode.php": "./tests/e2e/src/wordpress-files/test-plugins/echo-shortcode.php",
-		"wp-content/plugins/simulate-setting-dependency.php": "./tests/e2e/src/wordpress-files/test-plugins/simulate-setting-dependency.php"
+        "wp-content/plugins/simulate-setting-dependency.php": "./tests/e2e/src/wordpress-files/test-plugins/simulate-setting-dependency.php"
       }
     }
   }
diff --git a/assets/js/autosuggest/index.js b/assets/js/autosuggest/index.js
index 8566f032d1..e68a0607d8 100644
--- a/assets/js/autosuggest/index.js
+++ b/assets/js/autosuggest/index.js
@@ -675,9 +675,11 @@ function init() {
 
 			if (response && response._shards && response._shards.successful > 0) {
 				const hits = checkForOrderedPosts(response.hits.hits, searchText);
-				cachedAutosuggestResults = hits;
+				const resultsLimit = parseInt(epas.resultsLimit, 10);
+				const limitedHits = resultsLimit > 0 ? hits.slice(0, resultsLimit) : hits;
+				cachedAutosuggestResults = limitedHits;
 
-				toggleAutosuggest(hits, input);
+				toggleAutosuggest(limitedHits, input);
 			} else {
 				hideAutosuggestBox();
 			}
diff --git a/includes/classes/Feature/Autosuggest/Autosuggest.php b/includes/classes/Feature/Autosuggest/Autosuggest.php
index 044f115939..27aae452ae 100644
--- a/includes/classes/Feature/Autosuggest/Autosuggest.php
+++ b/includes/classes/Feature/Autosuggest/Autosuggest.php
@@ -337,6 +337,7 @@ public function enqueue_scripts() {
 			'query'               => $query['body'],
 			'placeholder'         => $query['placeholder'],
 			'endpointUrl'         => esc_url( untrailingslashit( $endpoint_url ) ),
+			'resultsLimit'        => $query['results_limit'],
 			'selector'            => empty( $settings['autosuggest_selector'] ) ? 'ep-autosuggest' : esc_html( $settings['autosuggest_selector'] ),
 			/**
 			 * Filter autosuggest default selectors.
@@ -488,6 +489,34 @@ public function generate_search_query() {
 			]
 		);
 
+		$results_limit           = isset( $args['posts_per_page'] ) ? (int) $args['posts_per_page'] : (int) get_option( 'posts_per_page' );
+		$search_ordering_feature = $features->get_registered_feature( 'searchordering' );
+
+		if ( $results_limit > 0 && $search_ordering_feature && $search_ordering_feature->is_active() ) {
+			/**
+			 * Filter the number of Autosuggest candidates requested when Custom Search Results is active.
+			 *
+			 * Autosuggest displays the number of results configured by `ep_autosuggest_query_args`, but Custom
+			 * Search Results need a larger candidate set so posts ordered beyond that display limit can still be
+			 * moved into their configured positions.
+			 *
+			 * @since 5.4.0
+			 * @hook ep_autosuggest_custom_results_query_size
+			 * @param {int}   $query_size    Number of candidates to request.
+			 * @param {int}   $results_limit Number of results to display.
+			 * @param {array} $args          Autosuggest query args.
+			 * @return {int} New candidate query size.
+			 */
+			$query_size = (int) apply_filters(
+				'ep_autosuggest_custom_results_query_size',
+				max( $results_limit, 10 ),
+				$results_limit,
+				$args
+			);
+
+			$args['posts_per_page'] = max( $results_limit, $query_size );
+		}
+
 		new \WP_Query( $args );
 
 		remove_filter( 'posts_pre_query', [ $features->get_registered_feature( $this->slug ), 'return_empty_posts' ], 100 );
@@ -497,9 +526,10 @@ public function generate_search_query() {
 		remove_filter( 'ep_weighting_configuration', [ $features->get_registered_feature( $this->slug ), 'apply_autosuggest_weighting' ] );
 
 		return [
-			'body'        => $this->autosuggest_query,
-			'placeholder' => $placeholder,
-			'query_vars'  => $args,
+			'body'          => $this->autosuggest_query,
+			'placeholder'   => $placeholder,
+			'query_vars'    => $args,
+			'results_limit' => $results_limit,
 		];
 	}
 
diff --git a/tests/php/features/TestAutosuggest.php b/tests/php/features/TestAutosuggest.php
index a41e518c45..69ea76a463 100644
--- a/tests/php/features/TestAutosuggest.php
+++ b/tests/php/features/TestAutosuggest.php
@@ -237,6 +237,29 @@ public function testGenerateSearchQueryFilters() {
 
 		$query = $this->get_feature()->generate_search_query();
 		$this->assertStringContainsString( '1234', $query['body'] );
+		$this->assertEquals( 1234, $query['results_limit'] );
+	}
+
+	/**
+	 * Test Custom Search Results can request more Autosuggest candidates than are displayed.
+	 */
+	public function testGenerateSearchQueryWithSearchOrdering() {
+		ElasticPress\Features::factory()->activate_feature( 'search' );
+		ElasticPress\Features::factory()->activate_feature( 'searchordering' );
+
+		$test_args_filter = function ( $args ) {
+			$args['posts_per_page'] = 4;
+			return $args;
+		};
+
+		add_filter( 'ep_autosuggest_query_args', $test_args_filter );
+
+		$query = $this->get_feature()->generate_search_query();
+		$this->assertStringContainsString( '10', $query['body'] );
+		$this->assertEquals( 4, $query['results_limit'] );
+		$this->assertEquals( 10, $query['query_vars']['posts_per_page'] );
+
+		remove_filter( 'ep_autosuggest_query_args', $test_args_filter );
 	}
 
 	/**