The B5.9 is a six-cylinder in-line/rotary fuel system design that uses 40% fewer parts than traditional diesels, thanks to its unitized design. Like all B Series engines, it is a proven power plant with mechanical fuel injection that meets ecological concerns in a highly efficient package.

Painstaking attention to details makes every B Series engine reliable and durable. They'll be on the job, for years to come.

Heavy-duty components include:

• Cummins Marine Engine 6B5.9
• Forged steel camshafts & crankshafts
• Plateau-honed cylinder liners
• Wastegated turbochargers
• A parent-bore cylinder block built to handle high pressures
• Wastegated turbochargers
• Rotary fuel pumps
• Edge-molded gaskets