You are purchasing a brand new original OEM fuel pressure regulator for the 04.5-05 6.6L Duramax Diesel with the LLY engine. The 8th digit of the vin code is 2 for the LLY engine. Part # 0 928 400 653. MADE BY SAME COMPANY THAT MADE THEM FOR GM, NOT A CHEAP KNOCKOFF OR A CRAPPY REMAN. (excludes holidays and weekends). Add a map to your own listings.