Advance MB270A Marine Gearbox 6.82:1 Reduction

Match a deep-reduction vertical-offset layout with the Advance MB270A Marine Gearbox 6.82:1 Reduction. This vertical-offset inboard marine transmission is specified for heavy-displacement commercial fishing trawlers, inland cargo barges, coastal tugboats, and passenger river ships, with a dedicated 6.82:1 deep-reduction ratio.

Model MB270A-6.82 uses a hydraulic multi-disc wet clutch with the stated smooth-handshake shifting and is rated at 272 HP (200 kW) for heavy commercial continuous-duty operation. It has a maximum input torque of 563 lb-ft (764 N·m), a 0-degree parallel vertical-offset output-shaft arrangement, and a maximum rated operating speed of 2,500 RPM.

Fitment and Propulsion Use

The Advance MB270A-6.82 is specified for primary propulsion transmission lines on heavy-displacement commercial fishing trawlers, inland cargo barges, coastal tugboats, and passenger river ships with 40 to 85 ft hulls. It supports a 6.82:1 deep-reduction drivetrain and a 0-degree parallel vertical-offset output configuration. Confirm fitment using the engine model, serial number, rated torque, operating RPM, reduction ratio, and manufacturer drivetrain documentation before ordering.

Before Ordering the Advance MB270A

Verify that Advance model MB270A-6.82 matches your heavy-displacement commercial fishing trawler, inland cargo barge, coastal tugboat, or passenger river-ship propulsion system. Confirm the 6.82:1 deep-reduction ratio, vertical-offset inboard configuration, 272 HP (200 kW) continuous-duty input rating, 2,500 RPM maximum input speed, 563 lb-ft (764 N·m) maximum input torque, hydraulic wet multi-disc clutch, 0-degree parallel vertical-offset output, mechanical cable shift with optional 24V DC solenoid actuators, SAE 2/SAE 3 housing grid, 8.27-inch output flange, SAE 30 or SAE 40 oil requirement, 10.0-quart baseline fill, raw-water-cooled heat exchanger, listed trolling-bypass availability, 749.5 lb dry weight, and stated 40 to 85 ft hull application. Confirm compatibility with your engine manufacturer’s documentation before purchase.