Will fit all LB7, LLY, LBZ, LMM, LML and L5P Duramax Diesels.Snow Performance has combined performance, quality, and ease of installation in this new water-methanol injection kit designed for all Chevy / GMC LBZ / LLY/ LMM/ LML / L5P Duramax Ford owners who demand colder EGTs while towing heavy..