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Westerbeke 30B Three Marine

Westerbeke Westerbeke 30B Three · 30B-THREE family — specifications, its industrial/tractor base engine, cross-referenced parts and where to buy them.

🚜 Base engine confirmed

The Westerbeke 30B-Three is a marinized Mitsubishi L3E industrial block (L3E-62WM); internals cross to Mitsubishi L3E part numbers. source

27 hp19.9 kW
952 ccdisplacement
76×70 mmbore × stroke
3-cylcylinders
1987–2005year range (approx)
NAaspiration
📋 Full specifications 6 🚜 Industrial / tractor base 407 🔧 Aftermarket 2
Cheaper-part coverage · 1/8
🚜 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.

Second Alternator OEM option

The OEM parts book lists a factory second / extra alternator option for the Westerbeke 30B Three — not standard equipment. Use the kit or hardware below when fitting a house-bank / domestic alternator.

Part No.DescriptionIn figure
11432 LAMPS METERS AND GAUGES 36- 1 21694 BRACKET 55A PRI ALT MOUNTING-W6G 1 36- 2 23012 BRACKET 85-120A PRI ALT MOUNTI~G-\J60 1 36- 3 23014 BRACKET 85-120A PRI ALT MQUNTING-W60 1 36- 4 23480 BRACKET 55A EXTRA ALT MOUNTING-W60 1 31- 1 22030 BELT PRI ALT DRIVING-W60 AR 31- 2 1-:'654 8 EL T 55A ALT DRIVING-FOUR 154 1 37- 3 1~141 8 EL T 55A ALT DRIVING-W30 1 41 1920r:; HARNESS ENGINE-STARTING 1 Fig 238 — ELECTRICAL SYSTEM-MARINE ENGINE-PUSHBUTTON START
📚 Manuals & Sources
Specs— none yet
Operator's Manual— none yet
Service / Workshop Manual— none yet

External links — we host none of these documents.

Westerbeke 30B Three — Affiliate Parts Search

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Category
Marine
Engine family
30B-THREE
Year range (approx)
1987–2005
Cylinders
3
Rated output
27 hp (19.9 kW)
Bore × stroke
76 × 70 mm
Displacement
952 cc
Max rpm
3600
Aspiration
Naturally aspirated
Interactive engine page