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.
Most of us 2011-2016 owners keep a spare one handy. When you install it, make sure you put a light film of clean engine oil on the large green o-ring. Also make sure the stops on the upper housing and the cap meet. Do not over tighten and break the stops.