The ultimate 6.5L cylinder head! These take the Optimizer casting one step further with the addition of press-in hardened valve seats and improved cooling passages between the valves.
Sold individually. 2 are required per engine
GMT Truck heads (side mount turbo)- We have limited stock that will run out and not return. We purchased the final production run of these.
Van/H1 Heads (center mount turbo)- Are discontinued as of 2024 and can not be ordered from AM General
