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Brand: ProMAXX Performance Part Number: CHE872N
Fits: 2001-2004 GM 6.6L Duramax LB7 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 re...
$1,186.00

Brand: ProMAXX Performance Part Number: 9601
DX Diesel Xtreme is our newest heads on the market. It is taking the diesel market to places it has never been before.  An aluminum version of what has always been a cast iron cylinder head. They’re now lighter and stronger than it’s cast iron brother and has been tested for the p...
$1,431.00

Brand: ProMAXX Performance Part Number: CHE871NB
Fits: 2004.5-2005 GM 6.6 Duramax LLYThe ProMaxx Bare Aluminum Cylinder Head allows you to custom build the cylinder heads you need for you 2004.5-2005 GM 6.6L Duramax LLY. ProMaxx Performance's cylinder head is the answer to Duramax's crack-prone cylinder heads. This cylinder head was designed ...
$695.00

Brand: ProMAXX Performance Part Number: CHE871N
Fits: 2004.5-2005 GM 6.6 Duramax LLYThe ProMaxx Aluminum Cylinder Head is a fully assembled replacement cylinder head for your 2004.5-2005 GM 6.6L Duramax LLY. This cylinder head from ProMaxx Performance is the remedy to Duramax's crack-prone cylinder heads. This replacement cylinder head was design...
$1,186.00

Brand: ProMAXX Performance Part Number: CHR418N
Fits: 1989-1998  3.9L 4BT CumminsThis ProMaxx Replacement Cylinder Head is a direct-Fit replacement for the damaged or cracked cylinder head in your 3.9L 4BT powered vehicle. This cylinder head is a new casting and comes ready to put in truck with all new valves, valve seals, springs, retainers...
$776.00

Brand: ProMAXX Performance Part Number: FOR850-1
ProMaxx Performance developed/designed this cylinder head from the OE casting. This is a direct bolt on cast iron cylinder head to replace your factory casting. Part number: FOR850-1...
$789.00

Brand: ProMAXX Performance Part Number: CHR620N
OUT OF STOCK!!! The ProMaxx 1998.5-2002 Dodge 5.9L Cummins Replacement Cylinder Head is a direct replacement for your casting #627. ProMaxx Performance Cylinder Heads are designed as replacement cylinder heads with thicker castings in crack prone areas. Sold as a complete cylinder head with valv...
$1,841.00

Brand: ProMAXX Performance Part Number: FOR851-1
ProMaxx Performance developed/designed this cylinder head from the OE casting. This is a direct bolt on cast iron cylinder head to replace your factory casting. Part number: FOR851-1...
$789.00

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