Used Detroit Diesel / Allison M20 spin-on oil filter adapter assembly 5123382. Removed from an 8V71 marine motor with an Allison M20 marine gear and has been in storage. Skippers Marine specializes in new old stock, recycled and those hard to find marine parts and accessories. Please check out my other Ebay store items. Don’t see what you are looking for? Feel free to send an email request. 6-0519