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Vehicle Info NeededPROMAXX PERFORMANCEPART NUMBER: 723-CHE871N
Cylinder Head GM 6.6L Duramax Diesel LLY Assembled
$1,22235
Ships on 11/11/2026
Lowest Price GuaranteeLLY 2004-2005
- Cylinder Head
- 2004-2005 GM 6.6L Duramax Diesel LLY
- Assembled
- Sold Individually
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!
Part TypeCylinder Head
Product LineProMaxx Performance GM 6.6L Duramax Diesel Cylinder Heads
BrandPROMAXX PERFORMANCE
Package Height6.2
Package Width10.6
Package Length22.5
Weight38.55 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Package Qty1
Package TypeEA
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Part Number : 070-230-4201
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Some parts are not legal for use in California or other states with similar laws / regulations
