Fits a 2004 Pontiac Grand Prix GT1. If you're replacing liners, why not replace your valve covers while you're there! Usage: Fel-Pro VS50080R Valve Cover Kit and Amazon Link: http://www.amazon.com/gp/product/B000C2CN7O/ref=cm_cr_ryp_prd_ttl_sol_0 If you do that much/any work on the car, don't skimp, go ahead and replace / do the job right. Also this kit is only gaskets and you need to buy valve cover gaskets as well; Buy them separately on amazon.com using the link above. (the link may change in the future, so the article number is also at the top)