KDD 6.0 Powerstroke O-Ring Cylinder Heads - Pair Cylinder Heads Feature: Battle proven, proprietary O-Ring setup to eliminate head gasket failure...

Black Friday Deal (11/23-12/1) Buy this Product, get a free set of pushrods here. Just have both in your cart for this automatic deal! KDD ICON Ser...

Aluminum O-Ringed Cylinder Heads Features & Details: Icon Series Install Notes Check out our teaser video here Valve covers are sold separa...

KDD 6.4 Powerstroke O-Ring Cylinder Heads, Pair Cylinder Heads Feature: Track tested, proprietary O-Ring setup. 32 Tungsten Carbide hardened valv...

Black Friday Deal (11/23-12/1) Buy this Product, get a free set of pushrods here. Just have both in your cart for this automatic deal! Aluminum O-R...

Aluminum O-Ringed Cylinder Heads Features & Details: 4-6 week lead time ICON SERIES INSTALL NOTES Check out our teaser video here Descr...

Black Friday Deal (11/23-12/1) - Buy this product, get a set of pushrods for free here! Just have both in your cart for a automatic deal! KDD 7.3 P...

KDD Delta Series CNC Ported 7.3 Powerstroke O-Ring Cylinder Heads Features & Details: Lead Times Apply Track Tested, proprietary O-Ring setup...

Fully Assembled 6.7 Cummins Cylinder Head Features: 100% New Casting, Assembled with USA Made Valves and Springs Includes premium heavy duty ...

Fully Assembled 5.9 24 Valve ISB Cummins Cylinder Head Features: 100% New Casting, Assembled with USA Made Valves and Springs Includes premiu...

5.9 24 Valve VP44 Cummins Cylinder Head Features:     100% New cylinder head, machined and assembled in the USA Heavy Duty hardened valve se...

KDD 5.9 12 Valve Cummins Cylinder Head Features: 100% New Casting, Assembled with USA Made Valves and Springs Includes premium heavy duty ha...

KDD 6.7 Powerstroke O-Ring Cylinder Heads Lead Times May Apply Features: - 100% New Casting, Assembled with USA Made Valves and Springs - Inc...

Add efficiency and reliability to your order by adding coated combustion chambers to your set of KDD heads!  This service applies our same thermal ...

Stock Plus (Stage 1/Standard)      For a mild bump over used factory springs, we use these quality USA made valve springs as the standard spring fo...

Kill Devil Diesel 6.7 Powerstroke Performance Valve Springs

Are you looking to re-build your own heads and want to use the best products out there?  Introducing KDD 6.0L Powerstroke Cylinder Head Valves in s...

KDD 6.0 Powerstroke O-Ring Cylinder Heads - Performance Bundle Cylinder Heads Feature: Includes KDD O-Ringed Heads, Mahle complete top end gasket...