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.
– 150LB Seat Pressure
– Good up to 4000rpm
– Good up to 60psi Boost
– Comes with both Intake and Exhaust Valve Springs
– Fits Dodge Cummins 1989-1998 12 Valve, and also the 4BT Cummins