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.
It's 36mm. Also, jack the car up with a hydraulic jack, put the socket and breaker bar on and either with or without an extension (extension works better) brace the bar against a jack stand. Lower the hydraulic jack and the weight of the car breaks the nut loose. Or get an eight foot extension and a gorilla. or a gas axe. or a nuclear weapon.