S&B Filters (75-5102) 04-05 LLY Duramax Cold Air Intake – Cotton Filter

Is your vehicle a LLY or LB7? Check the eighth digit of your VIN to find out. If it’s a 2 you’ve got a LLY and you’ll need this kit. If it’s a 1 you’ve got an LB7 and need the 75-5101 kit.