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This engine is suitable for boats with displacement of 17-22 tons with a water line legth (LWL) of 46-50 feet.

Horse Power




Cubic Capacity




75 @ 2600 rpm




3620cc /220.9 ci

414kg / 911 lbs

PRM 260

65 Amp

Technical Specifications

Beta 75

Beta 75

The Beta 75 is a 4 cylinder, naturally aspirated, diesel propulsion engine developing 75 bhp at 2.600 rpm with a swept volume of 3620 cc.

Standard Options

Upgrade Options

The Beta 75 Diesel Propulsion Engine

22" Mount Centers (560mm)

65 Amp alternator

C Instrument Panel

Flexible coupling

Flexible mounts

Heat exchanger cooling

High Inertia Flywheel

Intake silencer / Air filter

Oil change pump (fitted)

Shaft Coupling

Standard exhaust injection elbow

Stop solenoid

PRM 260 transmission

Transmission Options

Standard – PRM 260

Bobtail - No gearbox but with drive plate or                    Velvet Drive adapter kit

PRM 500 Hydraulic 1.96:1/2.94:1  

TMC 60A 7 degree down angle 2:1 / 2.45:1 

Hydraulic Soft Ship Block for PRM 

ZF 25A Hydraulic 1.97:1 / 2.80:1

ZF25A 8 Degree down angle 1.90:1 / 2.29:1 / 2.7:1

TM 345 series with trolling options

TM 93 Hydraulic 2.09:1 / 2.4:1 / 2.77:1 also with down agle options


Alternator (standard) w/ Serpentine Belt System

100 Amp Alternator with Serpentine belt

175 amp Alternator w/ Serpentine Belt Drive System

High Rise Exhaust Elbow for 2″ hose

High Rise Exhaust Elbow for 2″ hose – 200mm rise

Panel – Type CW Waterproof

More Options

Adverc Controller

2nd 175 Amp 12v alternator, engine mounted

120 Amp Balmar Alternator

Flybridge Panel

Hot water Fittings

Insulated Ground Electrical w/ 100/70 amp Alt

Keel cooling

Long term storage (test run on Ensis oil and Calibration fluid)

Mount and pulley for Sea Frost compressor

Panel Extension harness with starter relay

Panel Recess with clear lid for C panel dimensions

PTO Pulley (twin A sections)

Remote Oil Filter


Downloads & Support

Operator's Manual

Data Sheet

Schematics with PRM 260

Schematics with PRM 500

Schematics with TM 345


Schematics with


Schematics with


Schematics with


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