Diesel Power Holland completed a full Caterpillar 3408 DI-TA industrial engine rebuild, delivering 500 HP at 1,800 RPM for a heavy-duty industrial application. Built to arrangement number 4W-7474 with dry exhaust manifolds, single-wall injection lines, and a 4-hole instrument panel, this rebuild demonstrates our capability to overhaul 3408 DI-TA engines to exact industrial configuration requirements — ready for radiator-cooled installations worldwide.

Caterpillar 3408 DI-TA Industrial Engine: Technical Specifications

• Engine model: Caterpillar 3408 DI-TA
• Prefix: 67U
• Application: Industrial engine
• Output: 500 HP @ 1,800 RPM
• Arrangement number: 4W-7474
• Exhaust system: Dry exhaust manifolds and turbo housing
• Injection lines: Single-wall
• Instrument panel: 4-hole, engine-mounted
• Cooling: Suitable for radiator cooling
• Rebuild standard: Caterpillar factory specifications

What Is the Caterpillar 3408 DI-TA Industrial Engine?

The Caterpillar 3408 is an 18.0-litre, V8 diesel engine from Caterpillar’s 3400 series — one of the most versatile heavy-duty engine platforms ever produced. The DI-TA designation stands for Direct Injection – Turbocharged Aftercooled: fuel is injected directly into the combustion chamber, the turbocharger increases air intake volume, and the aftercooler lowers the temperature of that compressed air to maximise combustion efficiency and power output.

In industrial configurations, the 3408 DI-TA is typically rated at lower RPM than marine or crane variants. This build runs at 1,800 RPM — a standard industrial operating speed that prioritises sustained torque output and long service life over peak power. The 1,800 RPM rating also aligns with 60 Hz generator drive applications, making this configuration suitable for power generation, pump drives, and compressor units in industrial and oilfield environments.

The arrangement number 4W-7474 defines the precise component configuration of this build, including accessory layout, injection system, and governor specification — essential information for parts ordering and future maintenance.

Industrial Rebuild Configuration

Several specification choices in this rebuild are specific to industrial rather than marine applications:

Dry exhaust manifolds and turbo housing: Industrial installations typically operate in ventilated environments where watercooled manifolds are not required. Dry exhaust components reduce system complexity and weight while remaining appropriate for the thermal conditions of an industrial engine room or enclosure.

Single-wall injection lines: Single-wall fuel injection lines are the standard configuration for industrial engines operating outside of marine classification requirements. Marine applications often mandate double-wall lines for fuel leak containment in enclosed vessel spaces; industrial applications use single-wall lines where this risk is managed through alternative means.

4-hole instrument panel: A 4-hole engine-mounted instrument panel provides monitoring of essential parameters — oil pressure, coolant temperature, RPM, and hours — directly at the engine, without the need for a remote control panel. This is typical for industrial installations where the engine is accessed directly by operators or maintenance technicians.

Radiator cooling compatibility: This engine is built for air-to-water cooling via a remote radiator, as opposed to keel or seawater cooling systems used in marine applications. This makes it suitable for stationary industrial installations, mobile equipment, and skid-mounted power units.

The rebuild process at Diesel Power Holland

Every Caterpillar 3408 DI-TA industrial rebuild at our Moerdijk workshop follows a defined overhaul process:

• Full disassembly of the V8 assembly, block, heads, rotating assembly, and ancillaries
• Chemical cleaning and dimensional inspection of all components
• Replacement of bearings, seals, gaskets, pistons, cylinder liners, and valve train components to OEM specification
• Turbocharger overhaul and dry exhaust manifold installation
• Fuel injection system service and calibration to 500 HP at 1,800 RPM
• Installation of single-wall injection lines and 4-hole instrument panel
• Validation of radiator cooling circuit compatibility
• Final performance test to Caterpillar factory standards

FAQ — Caterpillar 3408 DI-TA Industrial Engine Rebuild

What does arrangement number 4W-7474 mean on a Caterpillar 3408? The Caterpillar arrangement number 4W-7474 specifies the exact build configuration of this 3408 DI-TA industrial engine — including the accessory package, injection system layout, governor type, and instrument panel specification. It is the reference number used when ordering parts, rebuild kits, or commissioning a service.

Why does this 3408 DI-TA run at 1,800 RPM instead of 2,100 RPM? Different applications require different rated speeds. Industrial and generator drive applications commonly run at 1,800 RPM (60 Hz market) for sustained torque output and extended engine life. Marine propulsion and crane applications may run at higher RPM (up to 2,100 RPM) for peak power. This 500 HP @ 1,800 RPM rating is optimised for continuous industrial duty.

What is the difference between single-wall and double-wall injection lines on a CAT 3408? Single-wall injection lines are standard for industrial applications and carry fuel directly from the pump to the injectors. Double-wall lines add an outer sleeve around the fuel line, capturing any leak before it reaches the engine compartment — a requirement in marine applications under classification rules. Industrial installations use single-wall lines as the standard configuration.

Can the Caterpillar 3408 DI-TA 4W-7474 be used in a generator set? Yes. The 1,800 RPM rating of this configuration makes it well suited for driving a generator head in a 60 Hz power generation application. Diesel Power Holland can advise on generator coupling and configuration for specific power output requirements.

Does Diesel Power Holland ship rebuilt industrial engines worldwide? Yes. We supply rebuilt Caterpillar engines globally from our facility in Moerdijk, the Netherlands, with full export documentation and logistics support for all destinations.

Need a Caterpillar 3408 DI-TA Industrial Engine Rebuild?

Whether you need a rebuilt 3408 DI-TA in industrial configuration or a custom overhaul to your own arrangement specification, Diesel Power Holland delivers. With over 1,000,000 Caterpillar parts in stock and a dedicated workshop in Moerdijk, we have the capacity and expertise to complete your project efficiently.

Contact us for availability, technical specifications, and a rebuild quote.