Caterpillar Bare Engine Assembly C6.4 cylinder block for construction equipment

The Caterpillar C6.4 engine is a classic six-cylinder power platform widely used in medium-sized excavators and construction machinery. Renowned for its smooth power delivery, excellent load response, and mature electronic control technology, it serves as the core engine for many 20-ton class excavators. The "Bare Engine Assembly" typically comprises the core cast-iron cylinder block, cylinder head assembly, crankshaft, connecting rods, pistons, and camshaft; it represents the optimal solution for full engine replacement, power upgrades, or rapid repair following major mechanical failure.

Engine Configuration: Inline-6 ​​cylinder, 4-stroke, 6.4-liter displacement

Cooling System: High-efficiency liquid cooling (designed for thermal balance under demanding operating conditions)

Air Intake System: Turbocharged and aftercooled (significantly boosts torque reserve and operational efficiency)

Rated Power: Approx. 100 – 130 kW (135 – 175 hp), depending on specific equipment calibration

Fuel System: Electronically controlled high-pressure common-rail injection (ECU-managed precision injection strategies optimize fuel economy and emissions)

Key Advantages:

Balance of Power and Economy: Delivers robust digging force while the electronic control system effectively minimizes fuel consumption.

Highly Durable Construction: Reinforced cylinder block design withstands the stresses of prolonged, heavy-load construction operations.

Mature Maintenance Support: As a classic Caterpillar engine model, it benefits from a comprehensive global network of service data and parts availability, reducing your risk of downtime.

Primary Applications: CAT 320D/321D/323D series medium excavators, select paving machinery, and industrial loading equipment.

Guangzhou Jianming Machinery Equipment Co., Ltd.
With 20 years of solid practical experience, we are experts in the field of machinery power systems and components.

We began as a small machinery repair shop. Over the past two decades, we have accumulated a wealth of successful global case studies and extensive maintenance expertise. Drawing on extensive frontline experience in resolving complex mechanical issues, we have earned global acclaim and grown into a comprehensive enterprise employing over 200 professionals.

We possess a deep understanding of the challenges equipment faces under extreme conditions, backed by rich practical experience and expertise in the following areas:

**Heavy Machinery Power Upgrades and Retrofitting:** We provide customized engine replacement and overhaul solutions for various types of construction machinery, with specialized expertise in the repair and tuning of electronically controlled power platforms, such as the Caterpillar C-Series.

**Mining and Industrial Equipment Maintenance:** We offer professional power optimization and fault diagnosis strategies to ensure continuous equipment operation under heavy-load conditions.

**Agricultural and Irrigation Power Systems:** We provide power unit upgrades and comprehensive troubleshooting services for a wide range of agricultural machinery and irrigation equipment.

Leveraging our deep technical expertise, we are also a robust supplier of spare parts:

**Comprehensive Mechanical Parts Supply:** We offer a wide selection of carefully curated construction machinery parts—including high-pressure common-rail injectors, piston and connecting rod kits, precision cylinder heads, ECU modules, and engine overhaul gasket sets—to meet all your one-stop procurement needs.

Our extensive practical experience and robust supply chain system are our most valuable assets. Whether you are facing complex mechanical challenges or require reliable spare parts, Jianming Machinery has the expertise to help you succeed!