diff --git a/includes/abstracts/abstract-wc-legacy-product.php b/includes/abstracts/abstract-wc-legacy-product.php
index a14b38f4e6d..b04e2ab2a26 100644
--- a/includes/abstracts/abstract-wc-legacy-product.php
+++ b/includes/abstracts/abstract-wc-legacy-product.php
@@ -32,11 +32,11 @@ abstract class WC_Abstract_Legacy_Product extends WC_Data {
 
 	/**
 	 * Retrieves related product terms.
-	 * @deprecated 2.7.0 Use wc_get_related_terms instead.
+	 * @deprecated 2.7.0 Use wc_get_product_term_ids instead.
 	 */
 	protected function get_related_terms( $term ) {
-		_deprecated_function( 'WC_Product::get_related_terms', '2.7', 'wc_get_related_terms' );
-		return array_merge( array( 0 ), wc_get_related_terms( $this->get_id(), $term ) );
+		_deprecated_function( 'WC_Product::get_related_terms', '2.7', 'wc_get_product_term_ids' );
+		return array_merge( array( 0 ), wc_get_product_term_ids( $this->get_id(), $term ) );
 	}
 
 	/**
diff --git a/includes/wc-product-functions.php b/includes/wc-product-functions.php
index 3e6e477801d..8d4f7cde9dc 100644
--- a/includes/wc-product-functions.php
+++ b/includes/wc-product-functions.php
@@ -700,7 +700,7 @@ function wc_get_product_variation_attributes( $variation_id ) {
  * @return array
  */
 function wc_get_product_cat_ids( $product_id ) {
-	$product_cats = wp_get_post_terms( $product_id, 'product_cat', array( "fields" => "ids" ) );
+	$product_cats = wc_get_product_term_ids( $product_id, 'product_cat' );
 
 	foreach ( $product_cats as $product_cat ) {
 		$product_cats = array_merge( $product_cats, get_ancestors( $product_cat, 'product_cat' ) );
@@ -772,8 +772,8 @@ function wc_get_related_products( $product_id, $limit = 5, $exclude_ids = array(
 
 	// We want to query related posts if they are not cached, or we don't have enough.
 	if ( false === $related_posts || count( $related_posts ) < $limit ) {
-		$cats_array = apply_filters( 'woocommerce_product_related_posts_relate_by_category', true, $product_id ) ? wc_get_related_terms( $product_id, 'product_cat' ) : array();
-		$tags_array = apply_filters( 'woocommerce_product_related_posts_relate_by_tag', true, $product_id ) ? wc_get_related_terms( $product_id, 'product_tag' ) : array();
+		$cats_array = apply_filters( 'woocommerce_product_related_posts_relate_by_category', true, $product_id ) ? apply_filters( 'woocommerce_get_related_product_cat_terms', wc_get_product_term_ids( $product_id, 'product_cat' ), $product_id ) : array();
+		$tags_array = apply_filters( 'woocommerce_product_related_posts_relate_by_tag', true, $product_id ) ? apply_filters( 'woocommerce_get_related_product_tag_terms', wc_get_product_term_ids( $product_id, 'product_tag' ), $product_id ) : array();
 
 		// Don't bother if none are set, unless woocommerce_product_related_posts_force_display is set to true in which case all products are related.
 		if ( empty( $cats_array ) && empty( $tags_array ) && ! apply_filters( 'woocommerce_product_related_posts_force_display', false, $product_id ) ) {
@@ -792,17 +792,15 @@ function wc_get_related_products( $product_id, $limit = 5, $exclude_ids = array(
 }
 
 /**
- * Retrieves related product terms.
+ * Retrieves product term ids for a taxonomy.
  *
  * @since  2.7.0
  * @param  int    $product_id Product ID.
  * @param  string $taxonomy   Taxonomy slug.
  * @return array
  */
-function wc_get_related_terms( $product_id, $taxonomy ) {
-	$terms = apply_filters( 'woocommerce_get_related_' . $taxonomy . '_terms', get_the_terms( $product_id, $taxonomy ), $product_id );
-
-	return array_map( 'absint', wp_list_pluck( $terms, 'term_id' ) );
+function wc_get_product_term_ids( $product_id, $taxonomy ) {
+	return wp_list_pluck( get_the_terms( $product_id, $taxonomy ), 'term_id' );
 }
 
 /**