$catalogIblockId = 2;
$obCatalog = new CCatalog();
$obCatalog->UnLinkSKUIBlock($catalogIblockId);
$prefilterCustom = array(
"ID" => $arElements,
);
<?$result = $APPLICATION->IncludeComponent(
"bitrix:catalog.smart.filter",
"",
Array(
//другие параметры
"FILTER_NAME" => "arrFilter",
)