1998-2003 Cummins 5.9L ISB Valve Cover Gasket All Alliant Power products are backed with a 13 month unlimited Mileage warranty. Alliant Power Products are backed by First Class Technical Support. Alliant Power supplies over 200 high demand parts for over 20 different engine applications. Alliant Power Products are built toOEMspecifications and testing. Valve Cover Gasket 5.9 Liter DODGE/CUMMINS Engine