When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Any parts store or online at any parts retailer. Nothing special really. Look for one that is a Fail to Open... or just get a new stocker if you have a 4.7l. Don't forget a 99 cent gasket and to burp it correctly when finished.