PDD 12v Valve Springs

Your choice of Power Driven Valve Springs for 12v Cummins applications!

Power Driven 12v 60 lb. Valve Springs for 1989-1998 Cummins diesel are capable of handling engine speeds of up to 4,500 rpm, providing improved performance. However, it’s important to note that while the springs themselves are durable, the stock keepers and locks may not be suitable for racing or pulling applications.

Power Driven 12v Street Conical Valve Springs: Set of 12 high-performance drop-in valve springs for the 12v Cummins cylinder head. These lightweight valve spring assemblies are designed for maximum valve control up to 5,000 rpm, perfect for a hot street Cummins diesel. The springs feature 175 lbs. of seat pressure and 375 lbs. of open pressure.

These street conical springs, retainers, and locks are designed to drop in at a 1.950" installed height and 175 lbs. of seat pressure.

The Power Driven 12v Race Conical Valve Spring Set has 12 high-performance drop-in valve springs for the 12v Cummins cylinder head. These ultra-lightweight valve spring assemblies are designed for maximum valve control at high rpm. They feature 175 lbs. of seat pressure and room for just over 0.700" of valve lift—perfect for a race truck engine! These performance springs will accommodate the vast majority of the largest lift camshafts on the market while still maintaining reasonable open pressure for cam lobe and lifter/tappet life. As with any aftermarket valve spring upgrade with over stock pressure, it's recommended that a higher-quality engine oil is used to protect the cam and tappets.