This is a replacement seal for nearly all OMC SIDE MOUNT raw water pumps / sea water pumps. The garter spring is 316 stainless steel. This is superior to the single lip OEM seal that is prone to failure. Seal is located directly behind the impeller. If you have any fitment questions just ask. The OMC equivalent part # is 0824247. Remember to change your seal at the first sight of your pump dripping. If it leaks into your bearings you will need to rebuild your pump. Check out my other listings for rebuild kits. Thanks.