PacBrake 60 PSI Heavy Duty Exhaust Valve Springs 89-98 Dodge 5.9L Cummins 12V C14010

PacBrake strongly recommends installing heavy duty (60 psi) exhaust valve springs with their exhaust brake on 1988-1998 12 valve Dodge Cummins for optimum braking power. The factory exhaust valve springs are not rated to retain the pressure the PacBrake puts forth on the springs.