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Duramax Performance || Duramax LLY - Duramax Performance
The following pages list parts specifically suited for the 2004-2005 Duramax LLY. The 2006 LLY should follow LBZ as they are physically identical.
If you are unsure of what engine you have please go back one page and read the paragraph titled "engine identification". Do not order Duramax engine parts without correctly identifing your engine first.
