Displaying SKU on WooCommece Categories

Hi,

I’m trying to display product SKU on my shop. I’ve used the following code which I’ve tested on the individual product level by using ‘woocommerce_single_product_summary’ and it works. For some reason I cannot get it to work on categories. Any ideas why?

add_action( ‘woocommerce_shop_loop_item_title’, ‘db_show_sku’, 6 );
function db_show_sku(){
global $product;
echo ‘<span class=”custom_sku”>Part no. ‘ . $product->get_sku() . ‘</span>’;
}

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