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8GFI 476-1 LLY New Bare LLY New Full
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6.6 Duramax LLY New Bare 6.6 Duramax LLY New Full
6.6 Duramax LLY New Bare
Our Price: $524.00
6.6 Duramax LLY New Full
Our Price: $895.00
ProMaxx Performance has the answer for the epidemic of cracked GM 6.6L cylinder heads. They have developed and designed this new cylinder head from the OE casting but improved the casting strength and thickness in all the crack prone areas. This is a direct bolt-on aluminum cylinder head that replaces your difficult to access fractured factory cylinder heads. This head is available as a fully machined bare casting or fully assembled and pressure checked! ProMaxx Performance has the answer for the epidemic of cracked GM 6.6L cylinder heads. They have developed and designed this new cylinder head from the OE casting but improved the casting strength and thickness in all the crack prone areas. This is a direct bolt-on aluminum cylinder head that replaces your difficult to access fractured factory cylinder heads. This head is available as a fully machined bare casting or fully assembled and pressure checked!