How much mm tappet clearance of Cummins K38 Engine?

The tappet clearance for the Cummins K38 engine is typically set at 0.25 mm (0.010 inches) for both intake and exhaust valves. It's important to check the specific service manual for the exact specifications, as they can vary based on the engine configuration and application. Proper adjustment is crucial for optimal engine performance and longevity.