Use an array which contains the translations, or even a database table.
$row['opcode'] = "YSUSP YTRANS";
$codes = explode(" ", $row['opcode']);
$translate = array("YSUSP" => "Suspension", "YTRANS" => "Transmission");
foreach($codes as $code){
echo $translate[$code]." "; // echoes Suspension Transmission
}
By the way, if you are storing more than one code in a database cell, your database schema probably needs a rethink. I would create a new table, which has each type as a column, and also an id field to link to a product (presumably a car?)