- Engines & Components
- Cylinder Heads
- ProMaxx Performance GM 6.6L Duramax Diesel Cylinder Heads
Brand New Replacement Duramax Diesel Heads
ProMaxx Performance has the answer for the epidemic of cracked GM Duramax 6.6L cylinder heads. Designed by ProMaxx from an OE casting, ProMaxx improved the casting strength with greater thickness in all crack prone areas. Developed as a direct bolt-on replacement for fractured factory heads, ProMaxx Duramax cylinder heads are available as a fully-machined bare casting or fully assembled and pressure checked.
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Features:
- New Castings Are Thicker Than OEM
- Improved Casting In ''Problem Areas''
- Assembled Head Features New Components: Springs, Valves, Retainers, Locks, Etc.
- Assembled Heads Come Ready To Bolt On
- NO CORE CHARGE!
LB7 2001-2004
LBZ (8GF1) 2006-2007
ProMaxx Performance Cylinder Head GM 6.6L Duramax Diesel LBZ 8GF1 Assembled
LLY 2004-2005
At JEGS you can get a direct replacement for your cracked Duramax cylinder head for a great price. They can be delivered fully assembled and ready to bolt on. The 6.6L performance Duramax cylinder heads from ProMaxx are made with a thicker casting, preventing cracking in common, problematic areas.
What Are ProMaxx Performance GM 6.6L Duramax Diesel Cylinder Heads Common Pros and Cons?
The Duramax performance cylinder heads have an improved casting strength and are much thicker than factory cylinder heads. Keep in mind, that this can lead to heads having sharp edges and extra material that may require a bit of filing. While the extra material saves from cracking, it can also add to the weight of the motor.
How Much Do ProMaxx Performance GM 6.6L Duramax Diesel Cylinder Heads Cost?
JEGS offers the ProMaxx performance GM 6.6L Duramax diesel cylinder heads as fully machined bare castings for around $500. Starting at around $1,000, you can pick up a fully assembled Duramax cylinder head from JEGS that has been factory pressure checked.