12 Valve Cummins Performance 150LB Valve Springs

The Industrial Injection 150LB Performance Valve Springs are recommend for people who are pushing over 45psi boost and/or 3200rpm. These performance valve springs will help prevent valve float, there for allowing your truck to run more efficiently and make more power safely.Features: - 150LB Seat Pressure - Good up to 4500rpm - Comes with both Intake and Exhaust Valves - Fits Dodge Cummins 1989-1998 12 Valve, and also the 4BT Cummins