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ProMaxx Performance

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ProMaxx Performance
ProMaxx Performance Products has continued to revolutionize the CNC cylinder head market. Acting as one of the largest suppliers of ported cylinder heads, ProMaxx also offers a complete line of replacement diesel cylinder heads. With replacement heads for the Ford 6.0L Powerstroke, Cummins and GM 6.5L available through XDP, ProMaxx heads are an excellent affordable choice when rebuilding or repairing your diesel engine.
ProMaxx 9601 Bare Aluminum Cylinder Head 34246 50.00 ProMaxx 9601 Bare Aluminum Cylinder Head
3 5 1
$ 1065
Upgrade your 2003-2005 Ford 6.0L Powerstroke cylinder heads with the ProMaxx 9601 Bare Aluminum Cylinder Head. With many years of testing, ProMaxx Aluminum Cylinder Heads have multiple advantages over the factory style cast heads such as increased flow, increased power, better cooling, and a weight reduction at over 42lbs less per cylinder head compared to stock. Starting with the bare casting, each head is manufactured from ultra-smooth 356 T-6 aluminum, the same proven material used in ProMaxx's famous racing heads. With multiple strength and design upgrades, these aluminum cylinder heads are solid behind the injector cups, have hardened seats and guides, and also have the strongest injector hold-down boss available. Sold as a bare casting without any valves, seals, or springs. This head is a perfect start for those that want to upgrade their valvetrain. This is a brand new casting with no core charge. 1 year warranty.Features:Bare CastingFor 18mm DowelsMutl-Angle Valve Job 25% Increased Air Flow Machined and Assembled In The USA! Sold Individually Note: Model year ranges are suggested applications. Please confirm dowel size on your truck before ordering.
ProMaxx 9602 Aluminum Cylinder Head 34247 50.00 ProMaxx 9602 Aluminum Cylinder Head
$ 1395
Upgrade your 2003-2005 Ford 6.0L Powerstroke cylinder heads with the ProMaxx 9602 Aluminum Cylinder Head. With many years of testing, ProMaxx Aluminum Cylinder Heads have multiple advantages over the factory style cast heads such as increased flow, increased power, better cooling, and a weight reduction at over 42lbs less per cylinder head compared to stock. Starting with the bare casting, each head is manufactured from ultra-smooth 356 T-6 aluminum, the same proven material used in ProMaxx's famous racing heads. With multiple strength and design upgrades, these aluminum cylinder heads are solid behind the injector cups, have hardened seats and guides, and also have the strongest injector hold-down boss available. Sold individually as a complete cylinder head with valves, valve seals, springs, retainers, and locks. This is a brand new casting with no core charge. 1 year warranty.Features:For 18mm DowelsMutl-Angle Valve Job 25% Increased Air Flow Machined and Assembled In The USA! Sold Individually Note: Model year ranges are suggested applications. Please confirm dowel size on your truck before ordering.
ProMaxx 9603 Bare Aluminum Cylinder Head (O-Ring) 34248 52.00 ProMaxx 9603 Bare Aluminum Cylinder Head (O-Ring)
$ 1227
Upgrade your 2003-2005 Ford 6.0L Powerstroke cylinder heads with the ProMaxx 9603 Bare Aluminum Cylinder Head with O-Rings. With many years of testing, ProMaxx Aluminum Cylinder Heads have multiple advantages over the factory style cast heads such as increased flow, increased power, better cooling, and a weight reduction at over 42lbs less per cylinder head compared to stock. Starting with the bare casting, each head is manufactured from ultra-smooth 356 T-6 aluminum, the same proven material used in ProMaxx's famous racing heads. With multiple strength and design upgrades, these aluminum cylinder heads are solid behind the injector cups, have hardened seats and guides, and also have the strongest injector hold-down boss available.An O-ringed head has been modified with a circular groove cut into the sealing surface. This groove is then filled with wire that protrudes slightly from the surface. When the head is installed, this wire pushes down on the factory gasket around the cylinder bore creating a stronger seal. This makes an O-ring head the perfect option for a mild to high performance build. ProMaxx Heads will come with the wire pre-installed.Sold as a bare casting without any valves, seals, or springs. This head is a perfect start for those that want to upgrade their valvetrain. This is a brand new casting with no core charge. 1 year warranty. Features:Bare CastingFor 18mm DowelsMutl-Angle Valve Job Machined For O-Rings25% Increased Air Flow Machined and Assembled In The USA! Sold Individually Note: Model year ranges are suggested applications. Please confirm dowel size on your truck before ordering.
ProMaxx 9604 Aluminum Cylinder Head (O-Ring) 34249 52.00 ProMaxx 9604 Aluminum Cylinder Head (O-Ring)
$ 1557
Upgrade your 2003-2005 Ford 6.0L Powerstroke cylinder heads with the ProMaxx 9604 Aluminum Cylinder Head with O-Ring. With many years of testing, ProMaxx Aluminum Cylinder Heads have multiple advantages over the factory style cast heads such as increased flow, increased power, better cooling, and a weight reduction at over 42lbs less per cylinder head compared to stock. Starting with the bare casting, each head is manufactured from ultra-smooth 356 T-6 aluminum, the same proven material used in ProMaxx's famous racing heads. With multiple strength and design upgrades, these aluminum cylinder heads are solid behind the injector cups, have hardened seats and guides, and also have the strongest injector hold-down boss available. An O-ringed head has been modified with a circular groove cut into the sealing surface. This groove is then filled with wire that protrudes slightly from the surface. When the head is installed, this wire pushes down on the factory gasket around the cylinder bore creating a stronger seal. This makes an O-ring head the perfect option for a mild to high performance build. ProMaxx Heads will come with the wire pre-installed.Sold individually as a complete cylinder head with valves, valve seals, springs, retainers, and locks. This is a brand new casting with no core charge. 1-year warranty. Features:For 18mm DowelsMutl-Angle Valve Job Machined For O-Rings25% Increased Air Flow Machined and Assembled In The USA! Sold Individually Note: Model year ranges are suggested applications. Please confirm dowel size on your truck before ordering.
ProMaxx CHE855N Replacement Cylinder Head 17903 70.00 ProMaxx CHE855N Replacement Cylinder Head
4 5 1
$ 380
ProMaxx Performance Cylinder Heads are designed as replacement cylinder heads with thicker castings in crack prone areas. Sold as a complete cylinder head with valves, valve seals, springs, retainers and locks, these new castings are sold without a core charge and come ready to install. Sold individually. Features: New Casting Improved Casting In "Problem Areas" Includes Valve Seals, Springs No Core Charge! Sold Individually Note: The standard heads will typically use a 1-piece intake and are normally found in truck applications. Please confirm what is in your vehicle before ordering.
ProMaxx CHE856N Replacement Cylinder Head 17904 70.00 ProMaxx CHE856N Replacement Cylinder Head
$ 360
ProMaxx Performance Cylinder Heads are designed as replacement cylinder heads with thicker castings in crack prone areas. Sold as a complete cylinder head with valves, valve seals, springs, retainers and locks, these new castings are sold without a core charge and come ready to install. Features: New Casting Improved Casting In "Problem Areas" No Core Charge! Sold Individually Note: Angled heads will use a 3-piece intake and are commonly found on Vans and Hummers. Please confirm what is in your vehicle before ordering.
ProMaxx CHR618N Replacement Cylinder Head 17897 200.00 ProMaxx CHR618N Replacement Cylinder Head
$ 535
The ProMaxx CHR618N Replacement Cylinder Head replaces the damaged or cracked cylinder head in your 1994-1998 Dodge 5.9L Cummins. ProMaxx Performance Cylinder Heads are designed as replacement cylinder heads with thicker castings in crack prone areas. Sold as a complete cylinder head with valves, valve seals, springs, retainers and locks, these new castings are sold without a core charge and come ready to install. Features: New Casting Improved Casting In "Problem Areas" No Core Charge! Truck Freight Item: Allow 1-2 weeks for delivery. Truck freight charges apply. Shipping Note: This product ships truck freight. To avoid any issues, you must pre-select the shipping option of commercial, or residential, as well as the lift gate and non lift gate option. If you do not have a forklift, you will need a lift gate.
ProMaxx CHR620N Replacement Cylinder Head 17898 250.00 ProMaxx CHR620N Replacement Cylinder Head
1.667 5 3
$ 1300
The ProMaxx CHR620N Replacement Cylinder Head is a direct replacement for your 1998.5-2002 Dodge 5.9L Cummins 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 valves, valve seals, springs, retainers and locks, these new castings are sold without a core charge and come ready to install. Features: Fits Casting #627 New Casting Improved Casting In "Problem Areas" No Core Charge! Truck Freight Item: Allow 1-2 weeks for delivery. Truck freight charges apply. Shipping Note: This product ships truck freight. To avoid any issues, you must pre-select the shipping option of commercial, or residential, as well as the lift gate and non lift gate option. If you do not have a forklift, you will need a lift gate.
ProMaxx CHR621N Replacement Cylinder Head 17902 250.00 ProMaxx CHR621N Replacement Cylinder Head
$ 1300
The ProMaxx CHR621N Replacement Cylinder Head for your 2007.5+ Dodge 6.7L Cummins is designed as replacement cylinder heads with thicker castings in crack prone areas. Sold as a complete cylinder head with valves, valve seals, springs, retainers and locks, these new castings are sold without a core charge and come ready to install. Features: New Casting Improved Casting In "Problem Areas" No Core Charge! Fits Casting Numbers: #3977225 - #3977221 Application Note:These cylinder heads are casting specific, not model year specific. Please confirm the casting number on the head you currently have to confirm fitment.Shipping Note: This product ships truck freight. To avoid any issues, you must pre-select the shipping option of commercial, or residential, as well as the lift gate and non lift gate option.If you do not have a forklift, you will need a lift gate. Truck Freight Item: Allow 1-2 weeks for delivery. Truck freight charges apply.
ProMaxx FOR852N Replacement Cylinder Head 29254 77.00 ProMaxx FOR852N Replacement Cylinder Head
$ 925
The ProMaxx FOR852N Replacement Cylinder Head is a high quality replacement for your 2008-2010 Ford 6.4L Powerstroke. Built with thicker castings in crack prone areas, the ProMaxx Cylinder Heads undergo extensive testing and quality control to ensure that you receive the best products possible for your 6.4L Powerstroke. ProMaxx performace the following tests and procedures: All heads are push rod clearanced, glow plugs and injectors are test fit, all recession depths are checked, all heads are pressure tested, all holes are tapped including glow plug threads and each head gets an in-house valve job. This is a brand new casting sold without a core charge. Sold individually. Features: New Casting Sold Individually Improved Design In "Problem Areas"
ProMaxx FOR852NB Bare Replacement Cylinder Head 29253 77.00 ProMaxx FOR852NB Bare Replacement Cylinder Head
$ 625
The ProMaxx FOR852NB Bare Replacement Cylinder Head is a high quality replacement for your 2008-2010 Ford 6.4L Powerstroke. Built with thicker castings in crack prone areas, these heads undergo extensive testing and quality control to ensure that you receive the best product possible for your 6.4L Powerstroke. ProMaxx performs the following tests and procedures: All heads are push rod clearanced, glow plugs and injectors are test fit, all recession depths are checked, all heads are pressure tested, and all holes are tapped including glow plug threads. Sold as a "bare" casting without any valves, seals or springs this head is a perfect start for those that want to upgrade their valve train. This is a brand new casting sold without a core charge. Sold individually. Features: New Bare Casting Sold Individually Improved Design In "Problem Areas"
ProMaxx FOR85XN Replacement Cylinder Head 17894 75.00 ProMaxx FOR85XN Replacement Cylinder Head
5 5 3
$ 895
The ProMaxx Performance Cylinder Heads are high quality replacements for your 2003-2007 Ford 6.0L Powerstroke. Built with thicker castings in crack prone areas, these heads undergo extensive testing and quality control to ensure that you receive the best product possible. ProMaxx performs the following tests and procedures: All fuel rails are drilled and checked, All heads are push rod clearanced, glow plugs and injectors are test fit, all recession depths are checked, all heads are pressure tested, all holes are tapped including glow plug threads and each head gets an in-house valve job. Sold individually as a complete cylinder head with valves, valve seals, springs, retainers and locks, these new castings are sold without a core charge and come ready to install. Sold individually. Features: New Casting Improved Casting In "Problem Areas" Available For 18MM and 20MM Dowels No Core Charge! Sold Individually Note: Model year ranges are suggested applications. Please confirm dowel size on your truck before ordering.
ProMaxx FOR85XNB Bare Replacement Cylinder Head 23743 30.00 ProMaxx FOR85XNB Bare Replacement Cylinder Head
$ 595
The ProMaxx FOR85XNB Bare Replacement Cylinder Head is a high quality replacement for your 2003-2007 Ford 6.0L Powerstroke. Built with thicker castings in crack prone areas, these heads undergo extensive testing and quality control to ensure that you receive the best product possible. ProMaxx performs the following tests and procedures: All fuel rails are drilled and checked, all heads are push rod clearanced, glow plugs and injectors are test fit, all recession depths are checked, all heads are pressure tested, and all holes are tapped including glow plug threads. Sold as a "bare" casting without any valves, seals or springs this head is a perfect start for those that want to upgrade their valvetrain. These brand new castings are sold without a core charge. Features: New Casting Improved Casting In "Problem Areas" Available For 18MM and 20MM Dowels No Core Charge! Sold Individually. Note: Model year ranges are suggested applications. Please confirm dowel size on your truck before ordering.