The Caterpillar 3406B is a 14.6 L turbocharged & turbocharged-aftercooled engine rated at 1800 rpm, producing up to 242 kW. It powers generator sets from Caterpillar, including the XQ350. It holds 34.1 L (9.0 gal) of oil and 104.1 L (27.5 gal) of coolant.
Also known as: CAT® 3406B
Part of the Caterpillar 3406B engine family — 2 variants share parts & fitment.
| Oil capacity | 34.1 L |
|---|---|
| Coolant capacity | 104.1 L |
| Displacement | 14.6 L |
| Aspiration | Turbocharged & Turbocharged-Aftercooled |
| Rated speed | 1800 rpm |
| Gross power | 242 kW |
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Fuel | ultra low sulfur diesel (ULSD) | Required for Tier 4 Interim emissions compliance |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.
The Caterpillar 3406B engine has an oil capacity of 34.1 liters.
The Caterpillar 3406B has a displacement of 14.6 liters.
The Caterpillar 3406B powers 1 generator set(s), including Caterpillar XQ350.