XDP XD390 HD HIGH BOOST VALVE SPRING SET FOR 98.5-22 DODGE RAM WITH CUMMINS ENGINE

Control the valvetrain in your modified 1998.5-2022 Dodge 5.9L Cummins with the XDP HD High Boost Valve Spring Set XD390. The XD390 Valve Spring Kit is designed to help eliminate valve float due to elevated cylinder pressures and higher boost levels.

Common upgrades like aftermarket tuning and fueling and turbo upgrades can cause valve float that results in severe engine damage. Intake valves can also be blown open from added boost levels and exhaust drive pressure which allows reversion. Reversion is when exhaust gasses enter cylinder on the intake stroke, another condition that can hurt your power potential.

The XD390 Valve Spring Set is ideal for the enthusiast that is running an aftermarket camshaft, upgraded or compound turbochargers, and fueling upgrades. These springs are ready to install using your factory retainers and locks. The XD390 Valve Springs have a reduced OD and will fit all 1998.5-2002 cylinder heads regardless of the casting inconsistencies.
Features:

• Performance Valve Spring Kit
• Essential For Elevated Boost Levels (50 and up lbs)

Specifications:

• Installed Height: 1.340 inch
• Installed Pressure: 108lbs
• 192lbs at .920 inch
• Coil Bind: .800 inch

Elevate the performance of your 1998.5-2022 Dodge Ram with Cummins engine using the XDP XD390 HD High Boost Valve Spring Set. This high-performance kit is specifically engineered to control the valvetrain, addressing the challenges posed by modified engine setups. As enthusiasts push the limits of their machines with aftermarket tuning, upgraded fueling, and turbo enhancements, valve float can become a serious risk. The XD390 Valve Spring Set expertly counters this threat, ensuring your engine remains reliable and powerful even under elevated cylinder pressures and boost levels.

Designed for compatibility with aftermarket camshafts and turbochargers, this set of valve springs is crucial for maintaining optimal engine performance. By preventing valve float, the XD390 minimizes the chances of catastrophic engine damage, such as blown intake valves caused by excessive boost and increased exhaust drive pressure. The design also safeguards against reversion—an engine condition that allows exhaust gases to enter the cylinder during the intake stroke, robbing power and efficiency.

Installation is straightforward, thanks to the XD390’s compatibility with factory retainers and locks, making it a perfect upgrade for those looking to get serious about performance. With a reduced outer diameter, these springs fit seamlessly into all 1998.5-2002 cylinder heads, accommodating any casting inconsistencies you may encounter.

The XD390 Valve Spring Set features an installed height of 1.340 inches, an installed pressure of 108 lbs, and an impressive rating of 192 lbs at .920 inches of lift, all while managing coil bind at .800 inches. When it comes to achieving your power goals and reinforcing your valvetrain, the XDP XD390 HD High Boost Valve Spring Set stands as an essential component in your performance upgrade arsenal.