LHA Series Shaftdrive 160 – 240mhp
Power Boat Engines
YANMAR LHA Series 160 – 240mhp
The best engine in its class just got better. The high power configuration comfortably allows the 4LHA to stand world class in all three main areas of comparison namely:
- power-to-weight ratio
- power-to-displacement ratio
- power for a given set of engine dimensions
The 4LHA is designed for use with a variety of marine gearboxes, including straight, angled and vee-drive, Kanzaki and ZF-Hurth units. Turbocharger has a waste-gate boost compensator which improves acceleration (4LHA-STP)
Engine Model
- 4LHA-HTP 160mhp @ 3300rpm
- 4LHA-DTP 200mhp @ 3300rpm
- 4LHA-STP 240mph @ 3300rpm
Gear Model
- KMH50A (Down Angle 8°) Ratio 1.67 / 2.13 / 2.43
- KMH50V (V Drive) Ratio 1.58 / 2.08 / 2.47
Environmentally engineered
This engine shares all the benefits of Yanmar’s commitment to protecting the environment in which we live. Features such as:
- low noise, low vibration, highly economical use of fuel
- low smoke, especially when accelerating or idling
Vibration has been kept at a low level due to the use of special steels in the block and other critical areas.Wide range of applications. Being substantially slimmer configuration means easy installation, even in tight locations. Repowering in most instances is straight-forward; the total package being slimmer, shorter and less bulky than previous models.
Accessories
Installation
- Flexible engine mount, 4 pcs/set
Cooling System
- Exhaust water mixing elbow, L-type
- Air venting device for cooling water tank (for V-drive)
Starting and Stopping
- Electric engine stop solenoid
Electrical and Instrumentation
- New C-type instrument panel
- Meter sensor assy for New B & C-type panel
- Extension wireharness (6m)
Option
Installation
- Engine foot for marine gear (ZF-Hurth ZF63A1 & H1, ZF45A2 & H2)
- C.W. hose for marine gear (ZF-Hurth ZF63A1 & H1, ZF45A2 & H2)
- Lube oil cooler and clamp bolts for marine gear
Cooling
- Exhaust water mixing elbow, Riser type
- Kingston cock and cooling water hose 2m
- Sea water strainer
Lubrication
- Lube oil evacuation pump
- Lube oil dipstick for opposite side of engine
Starting and Stopping
- Cold starting aid (Air heater)
Electrical and Instrumentation
- Alternator, 12V-80A
- Electric type bilge pump, 12V
- New B-type instrument panel
- New D-type instrument panel
- Boost meter sensor assy for New D-type panel
- Meter sensor assy for dual instrument panel
(New C+C or C+D type) - Connecting wireharness for dual instrument panel
Control
- Side-mount type single control head (MORSE:MV)
- Top-mount type single control head (MORSE:MT3)
Others
- Fuel water separator
- V pulley for front PTO
- Spare parts kit

Line Drawings
SPECIFICATIONS SHEET
AUTOCAD DRAWING
- 4LHA-HTP-BOBTAIL
- 4LHA-HTP-ZF45A
- 4LHA-DTP-BOBTAIL
- 4LHA-DTP-ZF63A
- 4LHA-STP-BOBTAIL
- 4LHA-STP-KMH50A
- 4LHA-STP-KMH50V
BROCHURE
TESTIMONIALS
Power Profiles