Cummins QSB6.7 – Marine Diesel Engine 250 HP

With 249 hp at 2400 rpm, the John Deere 6068TFM75 is an inline six-cylinder, four-stroke marine diesel engine with 6.8 L displacement. Turbocharging and mechanical-governed unit injection are specified, together with ULSD diesel fuel. The SAE 3 flywheel housing, shaft-drive compatibility, and listed ZF or Twin Disc transmission compatibility make drivetrain selection and machinery-space planning central to this propulsion-engine installation.

The engine has a 730 kg dry weight, 27 L coolant capacity, and full-pressure lubrication with 19 L oil capacity. A water-cooled exhaust manifold is specified, while the cooling configuration is listed as heat exchanger or keel cooled. Electrical options include a 12V, 75-amp alternator or a 24V, 50-amp alternator, which must be matched to the vessel electrical system.

Why Choose the John Deere 6068TFM75 Marine Diesel Engine

The 6068TFM75 marine diesel engine provides a 249 hp output at 2400 rpm from a turbocharged 6.8 L inline six-cylinder configuration. Its SAE 3 flywheel housing, shaft-drive compatibility, ZF or Twin Disc transmission compatibility, heat-exchanger or keel-cooling options, water-cooled exhaust manifold, and selectable 12V or 24V alternator output give buyers defined parameters for a larger inboard propulsion installation.

Warranty and Support

John Deere marine engines carry a 2-year or 2,000-hour standard warranty, subject to the manufacturer’s applicable warranty terms and conditions. provides product-information support before purchase and assistance with order-related questions. Review warranty eligibility and current coverage details on before placing your order.

Before Ordering the John Deere 6068TFM75 Marine Diesel Engine

Verify that your vessel supports the 730 kg dry weight, 249 hp at 2400 rpm output, 6.8 L six-cylinder layout, SAE 3 flywheel housing, and shaft-drive installation. You should confirm ZF or Twin Disc transmission compatibility, cooling configuration, water-cooled exhaust routing, ULSD fuel supply, 27 L coolant capacity, 19 L oil capacity, and the required 12V or 24V charging arrangement.