Yanmar 4LH-DTE Marine Inboard Diesel Engine 170HP Turbocharged
$15,088.00
- Description
Description
Yanmar 4LH-DTE Marine Inboard Diesel Engine 170HP Turbocharged
The Yanmar 4LH-DTE 170HP marine inboard diesel engine combines a 3.455-litre, four-cylinder platform with direct fuel injection, turbocharging and intercooling. Yanmar’s factory documentation lists 125 kW / 170HP at 3,300 rpm as its one-hour flywheel rating, making the exact power rating and intended operating duty clear starting points for your replacement-engine project. Manualzz
If you are looking for a Yanmar 4LH-DTE for sale, contact MSS Motorsports UG for current availability, engine condition and package pricing. Whether you are replacing an existing Yanmar 4LH-DTE 170HP or planning a marine diesel repower, request an offer matched to your vessel, gearbox and installation requirements.
Turbocharged Yanmar Power for Your Repower Project
The 4LH-DTE brings together the core features buyers look for when assessing an older Yanmar inboard installation:
- Turbocharging with intercooling: The turbocharger supplies compressed intake air, while the intercooler cools that air before it enters the engine.
- Direct fuel injection: Diesel is injected directly into the combustion chambers.
- Freshwater cooling: A freshwater engine circuit works with a seawater circuit and heat exchanger.
- Four-cylinder layout: A configuration worth assessing when engine-room dimensions, service access and mounting arrangements influence your choice. Manualzz
For a cruiser or fishing-boat repower, compare the engine’s documented rating with your hull, propeller demand and typical operating hours. Installation quality and the condition of the supplied engine are central to the finished result.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Yanmar |
| Engine model | 4LH-DTE |
| Engine family | Yanmar 4LH Series |
| Configuration | Inline four-cylinder, four-stroke diesel |
| Displacement | 3.455 litres |
| Bore × stroke | 100 × 110 mm |
| One-hour flywheel rating | 125 kW / 170HP at 3,300 rpm |
| Continuous flywheel rating | 113.2 kW / 154HP at 3,200 rpm |
| One-hour propeller-shaft rating in factory manual | 121.4 kW / 165HP at 3,300 rpm |
| Fuel system | Direct injection |
| Aspiration | Turbocharged and intercooled |
| Cooling system | Freshwater cooling with seawater heat exchange |
| Starting system | 12V electric |
Power-rating note: The advertised 170HP refers to the factory’s one-hour flywheel rating. The manual separately identifies continuous output and propeller-shaft output. Compare quotations using the same rating and measurement point. ab-marineservice.com
Manufacturer reference information is available in the Yanmar 4LH Series factory service manual.
Marine Gearbox and Shaft-Drive Matching
Yanmar 4LH-DTE 170HP’s original documentation identifies the KM5A mechanical marine gearbox for the 4LH-DTE, with published reduction ratios of 1.46:1, 2.07:1 and 2.57:1. Confirm the gearbox and ratio fitted to the offered engine; inclusion depends on the quoted package. Manualzz
If you intend to reuse your existing transmission, provide its model, serial number and ratio. Your installer should check the flywheel housing, coupling, engine mounts, shaft alignment, exhaust connections and cooling arrangement before confirming the installation.
For a higher-output alternative in the related range, compare the Yanmar 4LHA-DTP 200HP marine diesel engine. Assess the additional power against your vessel’s requirements and drivetrain capacity.
Know What Your Quotation Includes
A clear equipment specification helps you budget for the complete repower. Ask MSS Motorsports UG to identify the engine’s condition, serial number, recorded hours and available service or test records, together with the equipment included.
The quotation should state whether supply covers the engine alone or includes a gearbox, instrument panel, wiring harness, mounts, exhaust elbow and controls. Request any applicable warranty terms in writing, including the provider, coverage period and exclusions.
For delivery planning, confirm packing, freight charges, estimated dispatch timing and the documentation available for your destination.
Frequently Asked Questions
Why do some documents describe the Yanmar 4LH-DTE 170HP as 165HP?
The factory service manual lists 170HP at the flywheel and 165HP at the propeller shaft for the one-hour rating at 3,300 rpm. These figures describe different measurement points. ab-marineservice.com
Can I keep my existing gearbox?
It may be possible after a compatibility assessment. Share the gearbox model, reduction ratio and connection details so your installer can check the proposed engine package.
Is the engine new or reconditioned?
Confirm the condition of the specific unit quoted. Request supporting records for any stated operating hours, servicing or reconditioning work.
Request a Yanmar 4LH-DTE 170HP Quote
Get the details needed to move your replacement or repower project forward. Request Yanmar 4LH-DTE pricing and availability from MSS Motorsports UG.
Include your boat make and model, existing engine, gearbox model and required ratio, preferred package, how soon you plan to purchase, and billing and delivery addresses. Request an itemised quotation covering equipment, applicable warranty terms and delivery costs.
