Yanmar 4LHA-STP marine diesel engine 240hp
Original price was: $26,088.00.$24,783.60Current price is: $24,783.60.
- Description
Description
Yanmar 4LHA-STP Marine Diesel Engine 240HP
The Yanmar 4LHA-STP marine diesel engine combines a 3.455-litre, four-cylinder platform with turbocharging, intercooling and mechanically controlled direct fuel injection. Yanmar publishes a maximum crankshaft output of 177 kW / 240 metric HP at 3,300 rpm under ISO 3046 conditions. YANMAR Marine International
Looking for a Yanmar 4LHA-STP 240HP engine for sale? Contact MSS Motorsports UG for current availability, details of the offered unit and an itemised quotation covering your required engine and transmission package.
For a cruiser, motorboat or sportfishing-vessel project, assess the engine against the boat’s displacement, propulsion requirements and intended operating duty.
Turbocharged Yanmar Inboard Propulsion
The Yanmar 4LHA-STP uses an in-line injection pump and mechanical engine management. Its turbocharger pressurises the intake air, while the intercooler cools that air before it reaches the engine.
The freshwater-cooling system circulates engine coolant through a heat exchanger, with a separate seawater circuit carrying heat away. For a purchase assessment, request available records covering the turbocharger, intercooler, heat exchanger and seawater pump. YANMAR Marine International
These components should be considered alongside the engine’s running condition and service history when comparing complete propulsion packages.
Technical Specifications
| Specification | Manufacturer-Published Reference |
|---|---|
| Engine model | Yanmar 4LHA-STP |
| Engine configuration | Four-cylinder, in-line, vertical four-stroke diesel |
| Maximum crankshaft output — ISO 3046 | 177 kW / 240 MHP at 3,300 rpm |
| Maximum crankshaft output — ISO 8665 | 169 kW / 230 MHP at 3,300 rpm |
| Continuous crankshaft output | 140 kW / 190 MHP at 3,100 rpm |
| Displacement | 3.455 litres |
| Bore × stroke | 100 × 110 mm |
| Fuel system | Direct injection, in-line pump |
| Engine management | Mechanical |
| Aspiration | Turbocharged and intercooled |
| Cooling | Freshwater cooling with heat exchanger and seawater circuit |
| Starting system | Electric, 12V / 2.5 kW |
| Alternator reference | 12V / 80A |
| Dry engine weight | 365 kg, excluding gearbox |
MHP means metric horsepower. Confirm the engine identification, applicable specification and supplied equipment for the particular unit offered. yanmar.com
Why Yanmar Publishes Both 240HP and 230HP
Yanmar’s documentation gives two maximum ratings under different reference conditions: 240 MHP with fuel at 25°C under ISO 3046, and 230 MHP with fuel at 40°C under ISO 8665. Both are stated at 3,300 rpm.
The separately published continuous rating is 190 MHP at 3,100 rpm. Discuss the vessel’s operating profile and applicable duty limits with your installer when selecting the propulsion package. yanmar.com
Review the official Yanmar 4LHA-STP specifications for manufacturer information and technical-document access.
Shaft-Drive Configuration and Marine Gearboxes
The Yanmar 4LHA-STP is documented for connection to a marine gearbox and propeller shaft. The 4LHA-STZP designation identifies the related sterndrive arrangement. Confirm the complete model designation before ordering. yanmar.com
Yanmar 4LHA-STP datasheet lists marine gearbox options including KMH50A-LH and ZF68A, using hydraulic multi-disc clutch arrangements. Final selection requires the correct transmission rating, reduction ratio, coupling and installation configuration. yanmar.com
For your quotation, specify the gearbox model and ratio, shaft arrangement, propeller details and required controls. Ask whether the package includes the instrument panel, wiring harness, mounts, exhaust elbow and gearbox cooling components.
For a lower-output model within the same family, compare the Yanmar 4LHA-DTP 200HP marine diesel engine. Assess its rating and drivetrain requirements separately.
Plan Your Repower Around the Complete Package
Provide photographs of your existing engine and gearbox plates, together with engine-bed measurements, shaft height and available machinery-space dimensions.
Your installer should check mounting positions, shaft alignment, exhaust routing, seawater connections, fuel supply and service access. Use the installation drawing for the selected engine, gearbox and exhaust arrangement.
The published 365 kg weight excludes the gearbox. Account for the complete installed package when assessing mounting and handling requirements.
Confirm Condition, Supply Scope and Purchase Terms
When comparing a Yanmar 4LHA-STP price, request written confirmation of:
- Engine condition, serial number and documented hours, where available.
- Service history and details of repairs or rebuilding.
- Available cold-start, warm-running and load-test evidence.
- Turbocharger, intercooler and cooling-system inspection findings.
- Transmission, coupling, controls and accessories included.
- Terms for any warranty offered, including provider, coverage and exclusions.
- Packing, estimated dispatch timing and delivery charges.
For a reconditioned engine, request the work record and test results for that unit. Compare equipment, transport, installation parts and commissioning when assessing the total project cost.
Frequently Asked Questions
Is 240HP the continuous rating?
No. Yanmar lists a separate continuous rating of 190 MHP at 3,100 rpm. The 240 MHP figure is a maximum rating under the stated ISO 3046 conditions.
Does the 4LHA-STP use a marine gearbox or sterndrive?
The STP designation is documented for a marine gearbox and shaft arrangement. The related STZP version is documented for sterndrive installation.
Are a gearbox and manufacturer warranty included?
Inclusions and warranty depend on the offered unit and supply arrangement. Request an itemised quotation and written warranty terms.
Request Your Yanmar 4LHA-STP Quote
Contact MSS Motorsports UG for a Yanmar 4LHA-STP quotation with your vessel make and model, current engine, gearbox model and ratio, intended operating duty and purchase timing. Include your billing and delivery addresses to request equipment pricing and transport costs.
