Westerbeke W58 Marine
Westerbeke Westerbeke W58 · W family: specifications, its industrial/tractor base engine, cross-referenced parts and where to buy them.
The Westerbeke W58 is a marinized Perkins 4.154 block (154 cu in / 2.5L — UK or Mazda-licensed Japanese build); Westerbeke's own repower guide maps Perkins 4-154 → W58/W60. Internal service parts cross to Perkins 4.154 industrial numbers, sold cheaper through industrial/agricultural channels. source
A ✓ means at least one cheaper channel — aftermarket, the tractor/industrial base engine, or a standard component — exists for this engine in that category.
The OEM parts book lists a factory second / extra alternator option for the Westerbeke W58 — not standard equipment. Use the kit or hardware below when fitting a house-bank / domestic alternator.
| Part No. | Description | In figure |
|---|---|---|
| 13859 | BELT EXTRA 55AMP ALTERNATOR | Fig 271 — VVt:l:S I t:Ktst:l\t: :>ti • Mll:Sl,;t:LL.ANl:.UUl:S |
| 24828 | BRACKET EXTRA 55AMPALTERNATOR | Fig 271 — VVt:l:S I t:Ktst:l\t: :>ti • Mll:Sl,;t:LL.ANl:.UUl:S |
Parts by section · 22 assemblies
The exploded parts diagrams for the Westerbeke W58, grouped by system. Open a figure for its callout part numbers and per-variant quantities.
Body
Cooling
Crankshaft & Pistons
Electrical
Engine Block & Head
Fuel
Generator
Inlet & Exhaust
Lubricating
Valve Train
External links — we host none of these documents.
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- Category
- Marine
- Engine family
- W
- Cylinders
- 4
- Rated output
- 58 hp (42.7 kW)
- Bore × stroke
- 88.9 × 101.6 mm
- Displacement
- 2524 cc
- Aspiration
- Naturally aspirated