Description
Hamilton's flat tappet conversion kit comes with everything you need to eliminate the roller lifters and replace them with the much more reliable flat tappets that were used in Cummins engines prior to 2019. This kit has been designed to restore reliability and improve performance for the 2019-2024 6.7 Cummins engines.
This kit features new rocker arms with DLC coated trunnions, flat tappets and a 178/208 camshaft that has been designed to get the best efficiency out of daily driver and towing applications.
People have noticed an increase in spool up and throttle response, fuel economy gains and EGT reductions, all on stock vehicles with OEM tuning and all emission equipment present. Click on the description tab below for more information.
Forged Steel Camshafts
- Tighter Grain Structure: Hamilton 178-208 steel cams are forged, not cut from bar stock—resulting in a denser, more uniform grain structure.
- Enhanced Longevity: A natural “halo” forms on the exterior of the cam during forging, adding a layer of strength for extended service life.
DLC-Coated Tappets
- Gas Carburized & Polished: Each tappet undergoes a meticulous hardening process, then is polished for a smoother contact surface.
- Diamond-Like Carbon (DLC) Coating: This ultra-hard surface finish dramatically reduces friction and wear—if a tappet isn’t DLC-coated, you’re missing out on the best protection available.
Heavy-Duty Pushrods
- 3500+ lbs Buckling Force: Compared to around 1800 lbs for OEM pushrods, ours drastically reduce deflection at high cylinder pressures.
- Consistent Valve Timing: With less flex, your valvetrain stays precisely in sync—even under extreme conditions.
Upgraded Rocker Arms
- High-Quality Casting: Built to handle intense stress and heat cycles.
- Gas Carburized Ball & Foot: Reduces friction and wear for longer service intervals.
- DLC-Coated Trunnion: Minimizes galling—an all-too-common issue with OEM trunnions—and lowers overall friction in the valvetrain.
Proven Performance & Reliability
- Decades of Experience: Hamilton cams have powered countless diesel engines for millions of road miles and thousands of dyno runs.
- SEMA-Certified (49-State Compliance): This kit is tested and certified for street use in 49 states, giving you peace of mind.
Features & Benefits:
- Improved Reliability & Performance
- Replaces Lifters With DLC Coated Flat Tappets
- Includes Rocker Arm Assembly With DLC Coated Trunnions
- 178/208 Efficiency Camshaft For Daily Driving & Towing
- Fits The 2019-2024 6.7 Cummins