Caterpillar C11 Engine Cylinder Head 305-0617 257-4095 for Excavator & Machinery

Product Details

Product Overview

This premium aftermarket cylinder head is specifically designed for the Caterpillar C11 diesel engine, a powerplant widely used in heavy construction equipment, excavators, and industrial machinery. The part is identified by OEM cross-reference numbers 305-0617 and 257-4095, ensuring direct replacement compatibility with original Caterpillar components.

Manufactured to OEM size specifications, this cylinder head provides a critical sealing surface for combustion chambers, housing valves, injectors, and glow plugs. It is commonly used for Caterpillar machinery applications such as excavators, wheel loaders, and gensets where the C11 engine platform is deployed. Each unit undergoes rigorous inspection to meet the demands of heavy-duty diesel operation.

Key Features & Benefits

• Direct OEM Replacement: Engineered to match original Caterpillar 305-0617 and 257-4095 specifications for trouble-free installation.
• Heavy-Duty Construction: Cast from high-grade alloy iron to withstand extreme combustion pressures and thermal cycling in diesel engines.
• Precision Machining: All mating surfaces, valve guides, and injector bores are machined to tight tolerances for optimal sealing and performance.
• Comprehensive Testing: Each cylinder head is pressure-tested and inspected before shipment, with video outgoing inspection available upon request.
• Global Logistics Support: Packaged securely for international freight, with fast shipping to North America, Europe, Middle East, and Asia-Pacific industrial hubs.
• 6-Month Warranty: Backed by a standard warranty period with online technical support available after purchase.

Technical Specifications

OEM Cross-Reference

This cylinder head is a direct aftermarket replacement for the following original Caterpillar part numbers:

• 305-0617 (Cylinder Head Assembly)
• 257-4095 (Cylinder Head Assembly)

Note: Always verify compatibility with your specific engine serial number before installation. These numbers correspond to the C11 engine platform used in Caterpillar 325D, 330D, and similar excavator models.

Compatibility

This cylinder head is commonly used for the following applications:

• Engine: Caterpillar C11 (ACERT technology)
• Excavators: Caterpillar 325D, 330D, 336D series
• Wheel Loaders: Caterpillar 950H, 962H, 966H
• Industrial: Generator sets, marine propulsion, and agricultural machinery using C11 engines

Fitment is inferred based on OEM engine data. Verify with your equipment manufacturer’s parts catalog for exact compatibility.

Global Supply & Distribution

We maintain a robust supply chain capable of shipping this cylinder head to major industrial markets worldwide. Our logistics network supports:

• North America: Fast delivery to ports in Houston, Los Angeles, and Vancouver for construction and mining sectors.
• Europe: Regular shipments to Rotterdam, Hamburg, and Antwerp for heavy equipment dealers.
• Middle East & Africa: Served via Dubai and Jebel Ali ports for oil & gas and infrastructure projects.
• Asia-Pacific: Direct shipping from Guangdong to Singapore, Sydney, and Shanghai for regional distributors.

All export documentation, including commercial invoices and packing lists, is provided for smooth customs clearance. We have experience shipping to over 30 countries for construction machinery aftermarket applications.

Quality Assurance

Each cylinder head is manufactured in ISO-compliant facilities in Guangdong, China. Our quality control process includes:

• Material Certification: Cast iron composition verified to meet OEM hardness and thermal expansion standards.
• Pressure Testing: 100% leak testing of water jackets and oil galleries to ensure integrity under operating pressure.
• Dimensional Inspection: Critical mating surfaces checked with CMM (Coordinate Measuring Machine) for flatness and bolt hole alignment.
• Video Inspection: Outgoing video inspection provided upon request to verify part condition before shipping.

The product carries a 6-month warranty against manufacturing defects, with online technical support available for installation guidance and troubleshooting after the warranty period.

FAQ

Q1: Is this cylinder head a direct bolt-on replacement for my Caterpillar C11 engine?
A: Yes, this part is manufactured to match OEM specifications for the C11 engine. It is designed as a direct replacement for Caterpillar part numbers 305-0617 and 257-4095. However, we recommend checking your engine serial number against Caterpillar’s parts database to confirm compatibility, as some C11 variants may have minor differences in injector or valve configurations.

Q2: Does the cylinder head come with valves, springs, and seals installed?
A: This listing is for the bare cylinder head casting, machined and ready for assembly. It does not include valves, valve springs, seals, or injectors unless specified. You will need to transfer these components from your existing cylinder head or purchase a new valve train kit separately. Please confirm with your supplier before ordering if you require a fully assembled unit.

Q3: What maintenance should I perform before installing this cylinder head?
A: Before installation, we recommend the following: (1) Inspect the cylinder block deck for flatness and clean all gasket surfaces thoroughly. (2) Use new head bolts or studs as per Caterpillar torque specifications—do not reuse old bolts. (3) Check valve guide clearance and lap valves if reusing old components. (4) Follow the correct tightening sequence and angle-torque procedure for the C11 engine to prevent head gasket failure. Always consult the Caterpillar service manual for your specific engine model.