Set of 6 springs that can be used on either the exhaust or intake valves in 12-valve 5.9L Cummins engines; Replacement exhaust valve springs to allow for 60psi of back pressure with Exhaust Brakes; Heavy-duty intake valve springs for high RPM P7100 kits or performance camshaft applications; If installing an Exhaust Brake and P7100 Kit at same time, 2 sets of springs required Set of 6 springs that can be used on either the exhaust or intake valves in 12-valve 5.9L Cummins engines Replacement exhaust valve springs to allow for 60psi of back pressure with Exhaust Brakes Heavy-duty intake valve springs for high RPM P7100 kits or performance camshaft applications If installing an Exhaust Brake and P7100 Kit at same time, 2 sets of springs required Additional Attributes: GTIN: 00019025000254 Engine: 5.9L Cummins 94-98 12 Valve Make: Dodge Suggested Product: 1300030 Extened Information: Emissions : Emission verification to be determined in ACES, vehicle application data. Life Cycle Status: Available To Order Packaging: Quantity of Each: 1 Package UOM: EA Dimension: 7.8 x 3 x 1.3 inches