New Aftermarket Cummins Camshaft Application: Cummins ISB 4-Cylinders Engine Cross Reference Numbers 3929038 Covered for 1 year – up to 100,000 miles / 160,984 km, or 1,200 hours, whichever occurs first, providing the part has been installed within 18 months of the purchase date from AKMI. **After 18 months, parts will no longer be covered by this warranty.