Diesel Power Holland completed a full Caterpillar 3406 DI-TA marine propulsion rebuild for an Oil & Gas customer. The engine, configured to drive a compressor, was rebuilt to customer specifications, equipped with watercooled manifolds, and load tested on a CAT-certified test bench. Total delivery time: 2.5 weeks from order to shipment.

Caterpillar 3406 DI-TA Marine Propulsion — Project Specifications

• Engine model: Caterpillar 3406 DI-TA
• Application: Marine propulsion / compressor drive
• Output: 480 HP @ 2,100 RPM
• Manifolds: Watercooled
• Rebuild scope: To customer specifications
• Instrument panel: Standard CAT
• End user sector: Oil & Gas
• Delivery time: 2.5 weeks
• Quality assurance: Load tested at CAT test bench

What Is the Caterpillar 3406 DI-TA Marine Propulsion Engine?

The Caterpillar 3406 DI-TA is a 14.6-litre, six-cylinder diesel engine in the long-running 3406 series. The designation DI-TA stands for Direct Injection – Turbocharged Aftercooled, identifying this as the highest-performance variant of the 3406 family. The aftercooler reduces the temperature of compressed intake air after the turbocharger, increasing air density and enabling a higher power output — in this configuration, 480 HP.

In marine propulsion applications, the 3406 DI-TA is used as a main drive engine or as a mechanical drive for auxiliary equipment such as compressors, pumps, and hydraulic systems. Its combination of high torque, mechanical simplicity, and broad parts availability makes it a preferred choice in the Oil & Gas sector, where operational reliability and fast repair turnaround are critical requirements.

Oil & Gas Compressor Drive: Rebuild to customer specifications

This project involved rebuilding the 3406 DI-TA to the specific technical requirements of an Oil & Gas operator using the engine as a compressor drive unit. Key elements of this build included watercooled exhaust manifolds, standard practice in marine and enclosed installations to manage heat load and comply with safety regulations — and a standard CAT instrument panel for straightforward onboard monitoring.

The engine was rebuilt at our Moerdijk workshop and delivered within 2.5 weeks, minimising operational downtime for the customer.

The rebuild process at Diesel Power Holland

Every CAT 3406 DI-TA marine propulsion rebuild at Diesel Power Holland follows a defined overhaul process:

• Full disassembly and component inspection
• Cleaning and dimensional measurement of block, crankshaft, and cylinder head
• Replacement of bearings, seals, gaskets, liners, and pistons to OEM specification
• Turbocharger and aftercooler service
• Fuel injection system calibration to rated output
• Reassembly and installation of watercooled manifolds and instrument panel
• Load test at CAT-certified test bench — oil pressure, temperatures, and power output verified at full load

FAQ: Caterpillar 3406 DI-TA Marine Propulsion Rebuild

What is the difference between the CAT 3406 DI-TA and the DI-T? The DI-TA adds an aftercooler (intercooler) to the turbocharged DI-T configuration. The aftercooler cools the compressed intake air before it enters the combustion chamber, increasing air density and allowing more fuel to be burned efficiently. This results in higher power output — the DI-TA produces 480 HP in this marine propulsion configuration versus lower outputs for naturally aspirated or non-aftercooled variants.

Why are watercooled manifolds used on the 3406 DI-TA marine engine? Watercooled exhaust manifolds are used in marine and enclosed industrial installations to reduce surface temperatures of exhaust components, lowering fire risk and heat load in confined engine spaces. They are a standard requirement in many marine classification and Oil & Gas safety specifications.

Can the CAT 3406 DI-TA be configured as a compressor drive? Yes. The 3406 DI-TA is well suited for mechanical drive applications including compressors, pumps, and hydraulic units. The engine can be rebuilt and configured to meet specific RPM, torque, and mounting requirements of the driven equipment.

How quickly can Diesel Power Holland deliver a rebuilt 3406 DI-TA? For this Oil & Gas project, the full rebuild and delivery was completed in 2.5 weeks. Lead time depends on the condition of the core engine and the specific rebuild scope. Our stock of over 1,000,000 Caterpillar parts significantly reduces waiting time on components.

Does Diesel Power Holland handle custom rebuild specifications? Yes. We rebuild Caterpillar engines to the technical requirements of the end application — including specific RPM ratings, manifold configurations, governor settings, and accessory packages. Contact us to discuss your project requirements.

Need a Caterpillar 3406 DI-TA Marine Propulsion Rebuild?

Whether you operate in marine, Oil & Gas, or industrial sectors, Diesel Power Holland delivers fast, professionally rebuilt Caterpillar 3406 engines configured to your specifications. We have specialised in Caterpillar engines since 1976 and ship worldwide with full export documentation.

Contact us for a rebuild assessment and delivery timeline.