EX450-5 6RB1 Engine Assembly for Hitachi Excavator | Complete Replacement Engine

🔧 Product Overview

The 6RB1 engine is an Isuzu-based, 6-cylinder, water-cooled diesel engine known for its robust structure and reliable output. It is widely used in Hitachi excavators due to its excellent balance between horsepower, fuel efficiency, and service life.

Our engine assembly is supplied as a complete, ready-to-install unit, minimizing downtime and eliminating the need for additional parts sourcing.

⚙️ Key Features

✔ Complete Engine Assembly

Includes major internal components:

• Cylinder block

• Cylinder head

• Crankshaft

• Camshaft

• Pistons & rings

• Connecting rods

• Fuel injection system

• Oil pump, water pump

• Turbocharger (optional)

✔ Strong Power & High Torque

Engineered for tough excavation tasks such as:

• Heavy lifting

• Rock breaking

• Mining

• Long-hour operation

It maintains stable torque output even in high-load conditions.

✔ Excellent Fuel Efficiency

Optimized combustion system helps reduce fuel consumption while maintaining high performance, lowering operational costs.

✔ High Durability & Long Service Life

Manufactured with premium materials and strict quality control standards:

• Heat-resistant components

• Anti-wear internal parts

• Enhanced cooling performance

Ideal for harsh environments like construction sites, quarries, and mining fields.

✔ Easy Installation – Direct Replacement

Designed as a 100% compatible replacement for Hitachi EX450-5 models.
Bolt-on installation saves time and labor costs.

📐 Technical Specifications (Typical Values)

• Engine Model: 6RB1

• Application: Hitachi EX450-5 Excavator

• Type: Water-cooled, 4-stroke, 6-cylinder diesel

• Displacement: 10.0–10.5 L (varies by version)

• Rated Power: ~180–200 kW

• Rated Speed: 2000–2150 rpm

• Fuel System: Direct injection

• Cooling System: Water-cooled

• Turbocharged: Yes (most configurations)

(Specs may vary based on new, rebuilt, or OEM assembly version.)

🌍 Applications

The EX450-5 6RB1 engine assembly is suitable for:

• Construction engineering

• Mining and quarry operations

• Road and bridge projects

• Demolition work

• Heavy-duty excavation projects

📦 Packaging & Delivery

• Export-grade wooden crate

• Protected with anti-rust oil and shock-proof padding

• Fast delivery to Asia, Africa, Middle East, South America, Europe

• Shipping options: sea freight, air freight, express

🏭 Why Choose Us

• 100% tested before shipment

• Stable quality, long service life

• Direct factory price

• Professional after-sales support

• Fast delivery for global buyers

We supply new, rebuilt, and refurbished 6RB1 engines and parts, ensuring you find a solution that fits your budget.