OEM backed extended coverage available for customers without an active engine base warranty or expired on their current extended engine coverage.

Coverage options include a 1 year/125K miles or 2 years/250K miles of service coverage to protect your Detroit® engines and aftertreatment systems.

Extended OPTIMUM also has available options for the DT12® transmission and Detroit® axles.

This OEM backed coverage is designed by the pros who built your engine. While other third-party warranty providers use caps, deductibles, and coverage limits, we do not!