The Caterpillar 3508B is a 34.5 L 8-cylinder watercooled diesel engine rated at 1000 rpm, producing up to 649 kW. It powers generator sets from Caterpillar, including the 3508. It holds 240 L (63.4 gal) of oil and 55 L (14.5 gal) of coolant.
Part of the Caterpillar 3508B engine family — 2 variants share parts & fitment.
| Oil capacity | 240.0 L |
|---|---|
| Coolant capacity | 55.0 L |
| Displacement | 34.5 L |
| Cylinders | 8 |
| Aspiration | Watercooled Diesel |
| Rated speed | 1000 rpm |
| Gross power | 649 kW |
| Part # | Description | Category |
|---|---|---|
| 1440725 | Connecting rods | connecting_rod |
| 200-4139 | axial seal filter | filter |
| 225-6404 | radial seal filter | filter |
| 10R9951 | Head Gaskets | gasket |
| 1744947 | Aftercooler and Lines Gaskets | gasket |
| 2322507 | Manifold Gaskets | gasket |
| 2322521 | Turbocharger Gaskets | gasket |
| 2342795 | Injector Seals/Gaskets | gasket |
| M-4660684 | Gasket Set - Central & Lower - 3508 | gasket_set |
| 2322522 | Reman Injectors | injector |
| 206-5756 | Part 206-5756 | kit |
| 1743191 | Reman Cylinder Heads | other_service |
| PEHJ0271 | Cat® Emissions Upgrade Kits for Select 3500 Marine Engines | other_service |
| PEHJ0287 | Cat® Performance Upgrade Kits for Select 3508, 3512, and 3516 Marine Engines | other_service |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
The Caterpillar 3508B engine has an oil capacity of 240.0 liters.
The Caterpillar 3508B has a displacement of 34.5 liters with 8 cylinders.
The Caterpillar 3508B powers 1 generator set(s), including Caterpillar 3508.