Caterpillar C15 C18 Rocker Arm 302-8823 | Construction & Industrial Engine Parts

Product Details

Product Overview

This high-quality rocker arm, referenced as part number 302-8823, is a critical component designed for use in Caterpillar C15 and C18 diesel engines. As a precision-engineered part, it plays a vital role in the valve train mechanism, ensuring accurate and efficient operation of the engine’s intake and exhaust valves.

Manufactured to OEM size specifications, this rocker arm is commonly used in a wide range of heavy-duty applications, including construction machinery, industrial equipment, agricultural tractors, generator sets, marine vessels, and material handling systems. It is a direct replacement part that meets the rigorous demands of Caterpillar engine platforms.

Please verify your engine model and existing part number to ensure correct fitment before purchase. This component is sourced from, a reliable supplier in the aftermarket engine parts industry.

Key Features & Benefits

• Precision Fit: Manufactured to standard OEM dimensions (OEM Size) for seamless installation and reliable performance in C15 and C18 engine blocks.
• Durable Construction: Built to withstand the high stress and temperatures of diesel combustion, reducing wear on the valve train and extending component life.
• Enhanced Valve Timing: Ensures accurate rocker arm geometry for optimal valve lift and timing, contributing to engine efficiency and power output.
• Easy Identification: The 302-8823 part number is clearly marked for quick cross-referencing with your original equipment, minimizing installation errors.
• Versatile Application: Suitable for diverse sectors including construction, agriculture, marine, power generation, and industrial handling, making it a flexible stock item for dealers.

Technical Specifications

OEM Cross-Reference

This rocker arm is a direct replacement for the following OEM part numbers:

• Caterpillar OEM Number: 302-8823

Note: This part is an aftermarket replacement. Always compare your original part number to ensure compatibility.

Compatibility

This rocker arm is commonly used for the following engine models and applications:

• Engine Models: Caterpillar C15, Caterpillar C18
• Applications: Construction equipment (Excavators, Bulldozers), Industrial machinery, Agricultural tractors, Generator sets (Genset), Marine engines, Material handling equipment (Forklifts).

Fitment is inferred based on standard Caterpillar engine architecture. We recommend consulting your service manual for exact compatibility with your specific serial number prefix.

Global Supply & Distribution

We offer worldwide shipping capabilities to support B2B procurement needs across the globe. Our logistics network ensures fast and reliable delivery to major ports and industrial centers in North America, Europe, Asia-Pacific, the Middle East, Africa, and South America.

With extensive export experience and a focus on international trade compliance, we handle customs documentation and shipping arrangements for bulk orders. Whether you need a single unit for maintenance or a container for stock replenishment, we provide efficient supply chain solutions from our distribution hub in Guangdong, China.

Quality Assurance

Each rocker arm undergoes rigorous quality control processes to ensure it meets industry standards. Our manufacturing facility provides Machinery Test Reports and Video Outgoing Inspection upon request, offering full transparency on product quality.

We back this part with a 6-month warranty against manufacturing defects. After the warranty period, our Online Support team remains available to assist with technical inquiries and troubleshooting. is committed to delivering consistent, reliable aftermarket components.

FAQ

Q1: How do I confirm this rocker arm fits my specific engine?
A: First, locate the serial number on your Caterpillar C15 or C18 engine block. Cross-reference this with your parts manual to verify that OEM part number 302-8823 is specified. If your current rocker arm is stamped with 302-8823, this part will fit. We recommend physically comparing the part to your old one before installation.

Q2: What is the installation procedure for this rocker arm?
A: Installation should be performed by a qualified diesel technician. Ensure the engine is cool and valves are closed. Remove the valve cover and any associated brackets. Unbolt the old rocker arm assembly and install the new one, torquing the bolts to Caterpillar specifications. It is critical to check and adjust the valve lash (clearance) after installation to prevent damage.

Q3: How can I maintain the rocker arm for long service life?
A: Regular engine oil changes with the correct viscosity (typically 15W-40 for Cat engines) are essential, as the rocker arm is lubricated by engine oil. Inspect the rocker arm pad and roller tip for excessive wear during routine valve lash adjustments. Replace if you notice scoring, pitting, or unusual noise from the valve train.