2004.5-2005 GM 6.6L Duramax LLY

An eighteen-month engine sitting between the LB7 and the LBZ, and the one most often bought with cooling and airflow in mind. Its short run is exactly why fitment gets messy - parts listed for the years either side of it frequently don't carry over. Everything on this page fits...

An eighteen-month engine sitting between the LB7 and the LBZ, and the one most often bought with cooling and airflow in mind. Its short run is exactly why fitment gets messy - parts listed for the years either side of it frequently don't carry over. Everything on this page fits the 2004.5-2005 Chevrolet Silverado and GMC Sierra 2500/3500 6.6L.

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