Product Description
The CPP DIESEL 12V CUMMINS ROLLER ROCKER SYSTEM is engineered for serious 5.9L Cummins enthusiasts demanding improved valvetrain stability, reduced friction, and increased durability under high RPM and high boost conditions. Designed for performance street trucks, towing applications, sled pullers, and race builds, this premium rocker system helps provide smoother valve operation while supporting aggressive camshaft profiles and higher cylinder pressures.
Factory rocker assemblies can become a weak point on high horsepower 12-valve Cummins engines. The CPP Diesel Roller Rocker System is designed to help improve valvetrain control while reducing wear commonly associated with stock stamped rocker components. Whether you are building a daily-driven street truck or a dedicated competition setup, this system is built to support your power goals.
Features & Benefits
- Designed for 1989-1998 5.9L 12-Valve Cummins engines
- Performance roller rocker design reduces friction
- Improves valvetrain stability at higher RPM
- Ideal for towing, street, race, and sled pull applications
- Supports aggressive camshaft and fueling combinations
- Heavy-duty construction for long-term durability
- Excellent upgrade for high horsepower Cummins builds
- Engineered by CPP Diesel for performance reliability
Fitment
- 1989 Dodge Ram 250/350 5.9L Cummins
- 1990 Dodge Ram 250/350 5.9L Cummins
- 1991 Dodge Ram 250/350 5.9L Cummins
- 1992 Dodge Ram 250/350 5.9L Cummins
- 1993 Dodge Ram 250/350 5.9L Cummins
- 1994 Dodge Ram 2500/3500 5.9L Cummins
- 1995 Dodge Ram 2500/3500 5.9L Cummins
- 1996 Dodge Ram 2500/3500 5.9L Cummins
- 1997 Dodge Ram 2500/3500 5.9L Cummins
- 1998 Dodge Ram 2500/3500 5.9L Cummins 12-Valve
Recommended Supporting Upgrades
- 12 Valve Cummins Performance Parts
- Cummins Camshafts
- Cummins Valve Springs
- Cummins Pushrods
- Cummins Head Studs
Why Upgrade To Roller Rockers?
Roller rocker systems help reduce friction between valvetrain components while improving overall valve motion consistency. On high horsepower Cummins builds, maintaining stable valve control becomes increasingly important as boost, RPM, and cylinder pressure rise. A quality roller rocker setup can help improve reliability while complementing upgraded camshafts, valve springs, and fueling systems.
Specifications for CPP DIESEL 12V CUMMINS ROLLER ROCKER SYSTEM
| Specification | Details |
|---|---|
| Application | 1989-1998 5.9L 12V Cummins |
| Engine Type | 5.9L 6BT Cummins |
| Fuel System Compatibility | VE & P7100 Equipped Engines |
| Usage | Street, Towing, Competition |
| Brand | CPP Diesel |
| Retail Price | $1,499.00 |
Frequently Asked Questions
Will these roller rockers fit both VE and P-Pump 12V Cummins engines?
Yes. The CPP Diesel Roller Rocker System is designed to fit both early VE pump and later P7100-equipped 12-valve Cummins engines from 1989-1998.
Are these roller rockers recommended for towing applications?
Absolutely. These rockers are designed to provide improved valvetrain stability and durability, making them an excellent option for heavy towing and high-load applications.
Do I need upgraded valve springs with this system?
Upgraded valve springs are highly recommended for performance applications, especially when running higher RPM, upgraded camshafts, compounds, or elevated boost pressure.
Can these support high horsepower builds?
Yes. The CPP Diesel Roller Rocker System is intended for high-performance 12-valve Cummins builds ranging from street performance to competition-level applications.
Is professional installation recommended?
Yes. Proper valvetrain setup and adjustment are critical for performance and reliability. Professional installation is strongly recommended.
