Thornycroft TF-100 100 HP Marine Diesel Engine Package with PRM500D2 Gearbox
The Thornycroft TF-100 is a new four-cylinder, 4.5-liter naturally aspirated marine diesel engine producing 100 HP at 2,800 RPM. It is heat exchanger cooled and comes as a package with a PRM500D2 hydraulic gearbox and a deluxe control panel.
Built as a heavy-duty engine on a 4.5-liter block, the TF-100 uses a fully mechanical fuel system, with no ECU or electronic engine management system. Electrics are 12V as standard, with 24V offered as an option. Starting is electric and cooling is by fresh water through a heat exchanger. The package includes the PRM500D2 hydraulic gearbox, a deluxe control panel, a 6.0 m extension harness and a set of AV flex mountings.
Highlights
100 HP at 2,800 RPM, four cylinders, 4.5 liters
Naturally aspirated, fully mechanical fuel system, no ECU
Heat exchanger (fresh water) cooling, electric start
PRM500D2 hydraulic gearbox included
Deluxe control panel, 6.0 m harness and AV flex mountings included
12V electrics standard, 24V optional
Specifications
Brand | Thornycroft |
Model | TF-100 |
Horsepower | 100 HP @ 2,800 RPM |
Cylinders | 4 |
Displacement | 4.5 L |
Aspiration | Naturally aspirated |
Fuel | Diesel |
Fuel System | Fully mechanical |
Cooling | Heat exchanger, fresh water |
Starting | Electric start |
Gearbox | PRM500D2 hydraulic |
Electrics | 12V standard, 24V optional |
Extension Harness | 6.0 m |
Year Built | 2025 |
Good to know
Installation, rigging and commissioning by a qualified marine technician are recommended; follow the manufacturer's pre-delivery and break-in procedures.


