Caterpillar 374D 390D Excavator C18 Diesel Engine Cylinder Head Assembly 223-7263 223-9250 263-5055

Product Details

Product Overview

This premium Cylinder Head Assembly is a direct replacement component specifically designed for the Caterpillar C18 diesel engine, commonly used in heavy-duty excavators such as the Caterpillar 374D and 390D models. Manufactured to meet OEM specifications, this assembly ensures a precise fit and reliable performance in demanding construction, mining, and industrial applications.

Featuring critical OEM cross-reference numbers 223-7263, 223-9250, and 263-5055, this cylinder head is engineered to restore engine compression, optimize combustion efficiency, and extend the service life of your Caterpillar C18 power unit. It is an ideal solution for equipment owners seeking a cost-effective alternative to genuine OEM parts without compromising on quality or durability.

Key Features & Benefits

• OEM Specification Fitment: Manufactured to match original Caterpillar dimensions, ensuring seamless installation on C18 engine platforms without modifications.
• High-Strength Casting: Constructed from premium-grade cast iron or aluminum alloy (as per OEM design) to withstand extreme combustion pressures and thermal cycling.
• Precision Machined Surfaces: Valve seats, guides, and deck surfaces are CNC-machined to exact tolerances for optimal sealing and valve train alignment.
• Direct Cross-Reference Compatibility: Fully interchangeable with OEM part numbers 223-7263, 223-9250, and 263-5055, eliminating fitment guesswork.
• Enhanced Durability: Designed for heavy-duty cycles in excavator, genset, and marine applications, reducing the risk of premature cracking or warping.
• Rigid Quality Control: Each assembly undergoes pressure testing and dimensional inspection to ensure leak-free operation and structural integrity.
• Cost-Effective Solution: Provides significant savings compared to genuine dealer parts while maintaining reliable performance for B2B fleet maintenance.

Technical Specifications

OEM Cross-Reference

This cylinder head assembly is a direct replacement for the following OEM part numbers. Please verify your existing part number before ordering:

• Caterpillar OEM: 223-7263, 223-7263, 223-9250, 223-9250, 263-5055, 263-5055
• Alternative Reference: 2237263, 2239250, 2635055

Note: Always cross-reference with your engine serial number for complete compatibility.

Compatibility

This cylinder head assembly is commonly used for the following engine and equipment applications:

• Engine: Caterpillar C18 (Diesel)
• Excavators: Caterpillar 374D L, 374D LN, 390D, 390D L
• Other Applications: Industrial power units, marine propulsion, generator sets (Genset), and agricultural machinery powered by the C18 engine platform.

Fitment is inferred based on engine model compatibility. Always consult your equipment’s service manual for exact specifications.

Global Supply & Distribution

We offer worldwide shipping capabilities to support international B2B buyers. Our logistics network ensures fast and reliable delivery to major industrial centers and ports across:

• North America: USA, Canada, Mexico
• Europe: Germany, UK, Netherlands, France, Italy, Scandinavia
• Asia-Pacific: Australia, Japan, South Korea, Singapore, Indonesia
• Middle East & Africa: UAE, Saudi Arabia, South Africa, Nigeria
• South America: Brazil, Chile, Argentina, Peru

We maintain export experience and comply with international trade standards, ensuring secure packaging and efficient customs clearance for all orders.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities with strict adherence to OEM dimensional and material specifications.
• Testing Procedures: Each cylinder head assembly undergoes pressure testing for leaks, dimensional verification, and visual inspection before shipment.
• Warranty: 6-month warranty against manufacturing defects, providing peace of mind for fleet operators and maintenance professionals.
• Documentation: Machinery Test Report and Video Outgoing Inspection are provided upon request for quality verification.

FAQ

Q: How can I confirm this cylinder head fits my Caterpillar 390D excavator?
A: Verify your engine’s serial number and current cylinder head part number. This assembly is designed for the C18 engine used in 374D and 390D excavators. Cross-reference your OEM number (223-7263, 223-9250, or 263-5055) with the unit installed on your machine. For additional confirmation, consult your Caterpillar parts manual or contact our technical support with your engine serial number.

Q: What installation precautions should I take?
A: Always follow the manufacturer’s service manual for torque specifications, tightening sequences, and gasket installation procedures. Ensure the cylinder head surface is clean and free of debris. Use new head bolts and gaskets (not included) during installation. We recommend professional installation by a certified diesel mechanic to prevent damage from improper torquing or alignment.

Q: Does this cylinder head assembly include valves, springs, or other internal components?
A: This is a cylinder head assembly, but the specific inclusion of valves, springs, seals, or other components may vary by batch. Please confirm with our sales team before ordering if you require a fully assembled unit with all valvetrain components. Standard packaging includes the bare cylinder head casting with machined surfaces and valve guides installed.