When it comes to your Allison transmission, you want to make sure you're using only the best parts and filters to keep it running smoothly. The BNB Allison External Spin on Filter is a high-quality replacement filter that will keep your transmission running like new. This filter is designed to remove contaminants and dirt from your transmission fluid, extending the life of your transmission. Installation is easy, and this filter is backed by a quality guarantee. Give your Allison transmission the care it deserves with the BNB Allison External Spin on Filter.