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4LV170 Marine

Yanmar 4LV170 · 4LV family: specifications, its industrial/tractor base engine, cross-referenced parts and where to buy them.

Marinized Toyota 1GD-FTV (common-rail)

This 4LV is the marine version of the Toyota 1GD-FTV — the 2.8 L common-rail Land Cruiser Prado/HiLux diesel. Some internals may cross to Toyota 1GD parts; the marine cooling/exhaust/electronics are Yanmar-specific. (Public 4LV cross-reference coverage is still thin.)

🚜 Base engine confirmed

The Yanmar 4LV170 is a marinized Toyota 1GD-FTV 2.8 L common-rail diesel. Some internals may cross to Toyota 1GD; marinized externals are Yanmar-only. No Toyota donor BOM loaded yet. source

170 hp125 kW
2755 ccdisplacement
92×103.6 mmbore × stroke
4-cylcylinders
from 2018year range (approx)
Turbo + ICaspiration

common-rail (125 kW); Yanmar datasheet

📋 Full specifications 10 🚜 Industrial / tractor base 🔧 Aftermarket 34
Cheaper-part coverage · 4/8
🚜 Base engine ✓🌀 Impeller ✓💧 Raw-water pump🛢️ Oil filter ✓⛽ Fuel filter🌡️ Thermostat➰ Belt⚓ Anode ✓

A ✓ means at least one cheaper channel — aftermarket, the tractor/industrial base engine, or a standard component — exists for this engine in that category.

Parts by section · 73 assemblies

The exploded parts diagrams for the 4LV170, grouped by system. Open a figure for its callout part numbers and per-variant quantities.

Belts & pulleys

Fig 22 — PULLEYFig 52 — COVER(BELT)

Bilge & accessory pumps

Fig 39 — BILGE PUMP(OPTIONAL)

Camshaft & timing gears

Fig 2 — GEAR HOUSINGFig 3 — GEAR HOUSING COVER & RETAINERFig 20 — CAMSHAFT

Cooling – fresh water

Fig 13 — INTER COOLERFig 30 — COOLING PUMP(FRESH WATER)Fig 31 — THERMOSTATFig 32 — COOLER(FRESH WATER)Fig 35 — COOLING PIPE(FRESH WATER)Fig 36 — COOLING PIPE(FRESH WATER)(LUB. OIL COOLER)Fig 38 — HOT WATER SYSTEMFig 68 — (35A)COOLING PIPE(FRESH WATER)Fig 69 — (35B)COOLING PIPE(FRESH WATER)

Cooling – sea water

Fig 29 — COOLING PUMP(SEA WATER)Fig 33 — KINGSTON COCK(OPTIONAL)Fig 34 — COOLING PIPE(SEA WATER)Fig 37 — COOLING PIPE(SEA WATER)(L TYPE MIXING ELBOW)Fig 70 — (37A)COOLING PIPE(SEA WATER)(U TYPE MIXING ELBOW)Fig 71 — (37B)COOLING PIPE(SEA WATER)(U TYPE MIXING ELBOW)(V DRIVE SPEC.)

Crankshaft & flywheel

Fig 4 — FLYWHEEL HOUSINGFig 7 — BALANCER

Cylinder block

Fig 1 — CYLINDER BLOCK

Cylinder head & valves

Fig 17 — CYLINDER HEADFig 19 — TOP COVER

Electrical & instruments

Fig 47 — GLOW PLUGFig 50 — STARTER MOTORFig 51 — ALTERNATORFig 53 — ELECTRONIC CONTROL UNIT(ECU)Fig 54 — BRACKET(ECU)Fig 56 — COVER(ECU)Fig 57 — WIRE HARNESSFig 58 — SENSORFig 59 — SENSOR(THROTTLE)(FOR B25 PANEL)Fig 60 — FUSEFig 61 — INSTRUMENT PANEL(B25)(MEDALLION)Fig 63 — VCS

Fuel injection pump & governor

Fig 43 — FUEL PIPE(INJECTION PUMP RETURN)

Fuel injectors & nozzles

Fig 41 — FUEL INJECTION VALVE

Fuel lines, tank & filter

Fig 40 — COMMON RAIL & FUEL SUPPLY PUMPFig 42 — FUEL PIPEFig 44 — FUEL FILTERFig 45 — FUEL COOLERFig 46 — WATER SEPARATOR(OPTIONAL)(TO OCT. 2017)

Intake and Exhaust

Fig 10 — TURBINEFig 11 — MIXING ELBOW(L TYPE)Fig 12 — MIXING ELBOW(U TYPE)Fig 14 — AIR DUCTFig 15 — EXHAUST MANIFOLDFig 16 — SUCTION MANIFOLDFig 27 — LUB. OIL PIPE(TURBINE)Fig 28 — OIL SUCTION/DRAIN PUMP(OPTIONAL)Fig 65 — (10A)TURBINEFig 66 — (12A)MIXING ELBOW(U TYPE)(V DRIVE SPEC.)Fig 67 — (14A)AIR DUCT

Lubricating

Fig 6 — OIL SUMPFig 9 — BREATHER PIPEFig 23 — LUB. OIL COOLERFig 24 — LUB. OIL PUMPFig 25 — DIPSTICKFig 26 — LUB. OIL FILTER

Mounting

Fig 5 — MOUNTING FOOTFig 18 — ENGINE LIFTERFig 55 — BRACKET(EDU)Fig 72 — (48A)P.T.O.FLANGE(OPTIONAL)

Pistons, rods & liners

Fig 21 — CRANKSHAFT & PISTON

Tools & labels

Fig 8 — LABELFig 62 — TOOL

Transmission & drive

Fig 48 — CLUTCHFig 49 — CLUTCH ADAPTERFig 64 — ELECTRONIC TROLLING(TYPE-C/OPTIONAL)Fig 73 — (48B)TROLLING VALVE(A2/OPTIONAL)
📚 Manuals & Sources
Specs— none yet
Operator's Manual— none yet
Service / Workshop Manual— none yet
Parts Catalog / List— none yet
More📖 Boat Inboard Engine Manuals Boat Manuals

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Category
Marine
Engine family
4LV
Year range (approx)
from 2018
Cylinders
4
Rated output
170 hp (125 kW)
Bore × stroke
92 × 103.6 mm
Displacement
2755 cc
Max rpm
3500
Aspiration
Turbocharged + intercooled

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