The Caterpillar 3204 is a 4-cylinder industrial diesel known for durability, a simple mechanical fuel system, and easy maintenance. It powered older Cat machines and serves well in gensets, pumps, and small machinery. The live specs list 3.4L, about 78 to 85 hp, 195 lb-ft, naturally aspirated, and 18:1 compression, which are internally consistent for a small diesel. This is a used engine, inspected before it ships.
Two notes. First, the classic Cat 3204 is often cited with a larger displacement (around 5.2L, sharing the 3208 V8's bore and stroke), so confirm the displacement and configuration by the engine's serial number. Second, the live applications list was fabricated, naming John Deere, Kubota, Komatsu, JCB, Toyota, Generac, Kohler, and Polaris equipment that use their own engines, not a Cat 3204; those were not reproduced. This is a heavy freight item with commercial-grade installation.
| Item | Details |
|---|---|
| Identity | Serial number. |
| Displacement | Confirm by serial. |
| Use | Genset, pump, or machine. |
The engine's serial number
Displacement and configuration by serial number
Your application (genset, pump, machine)
Freight delivery at your site
| Item | Details |
|---|---|
| INCLUDED | The used Cat 3204 engine as confirmed by serial number. |
| NOT INCLUDED | Genset end, pump, controls, and accessories unless confirmed at order. |
| Tools You Need | A commercial / industrial installer; freight handling at delivery. |
This Cat 3204 is a commercial engine; fitment is confirmed by serial number:
| Vehicle | Compatibility |
|---|---|
| Use | Older Cat machines, gensets, pumps |
| Fitment | Confirmed by serial number |
| Note | The live competitor-machine list was not used |
The 3204 powered older Cat machines and serves in gensets and pumps. The live applications list was fabricated, naming competitor-engined equipment (John Deere, Kubota, Komatsu, JCB, Toyota, Hyster, Generac, Kohler, Polaris) and modern Cat compacts that use C-series engines, so it is not reproduced. Confirm the application by the engine's serial number. We disclose the donor details before shipping.
Not sure the 3204 fits your equipment? Call (240) 301-0095 with the engine's serial number and your application. Our team confirms it before your order ships.
Quality control for this part includes:
Serial number documented
Displacement confirmed by serial
Block, head, and injection inspected
Donor details disclosed
What is included confirmed with you before shipping
This is a used industrial diesel. We document the serial number, confirm the displacement, and inspect the block, head, and injection. It is a freight item needing commercial-grade installation; fitment is confirmed by serial number.
| Engine Type | naturally aspirated | 4-cylinder diesel |
|---|---|
| Displacement | Live 3.4L; confirm by serial (classic 3204 often about 5.2L) |
| Bore X Stroke | Live 94 mm x 120 mm |
| Compression Ratio | 18.0:1 |
| Horsepower | About 78 to 85 hp |
| Torque | About 195 lb-ft |
| Fuel System | Mechanical injection |
| Cooling System | Water-cooled |
| Electrical System | 12V |
| Use | Industrial / genset / pump (freight) |
| Fitment | Confirmed by serial number |
| Condition | Used |
| Sku | vaz228 |
Contact (240) 301-0095 within 15 days of delivery.
