OEM-backed used engine coverage is available for trucks without an active base warranty or Extended Coverage plan. Extended OPTIMUM was designed by the Pros who built your engine. Unlike third-party warranty providers, we have no caps, deductibles, and liability limits.
Extended OPTIMUM coverage options for DD13, DD15, and DD16 engines range from 6 months to 3 years and from 50,000 miles (80,500 km) to 375,000 miles (603,750 km).
Coverage options for DD5 and DD8 engine range from 1 year to 3 years and mileage from 50,000 miles (80,500 km) to 150,000 miles (241,500 km).
For more details on how Extended OPTIMUM can benefit you, contact your local Detroit dealer.