Alternator 12PK 28V 50A JFZ2520D 212-8561 34368-01100 for Caterpillar E320 E320B E320D Excavator

Product Details

Product Overview

This high-output Alternator JFZ2520D is a critical electrical component engineered for demanding diesel engine applications, specifically designed to fit the Caterpillar E320, E320B, and E320D excavator series. Operating at a robust 28V and 50A, this 12-pulley (12PK) alternator ensures a consistent and reliable power supply for the machine’s electrical systems, even under heavy load conditions.

As a direct replacement for OEM part numbers 212-8561 and 34368-01100, this unit is manufactured to meet or exceed original equipment specifications. It is an essential part for maintaining uptime on your construction or mining fleet, providing the necessary power to start the engine and operate all onboard electronics efficiently.

Please Note: While this alternator is commonly used for the Caterpillar E320 series excavators, we always recommend verifying your original part number (e.g., 212-8561) and physical configuration to ensure a perfect fit for your specific engine model and application.

Key Features & Benefits

• High Output & Reliability: Delivers a steady 28V / 50A output to keep batteries charged and support all electrical loads, ensuring reliable machine operation in the field.
• Direct OEM Replacement: Matches the form, fit, and function of original Caterpillar alternators (212-8561, 34368-01100), simplifying installation and reducing downtime.
• 12PK Pulley System: Designed with a 12-groove serpentine pulley (12PK) for superior belt grip and reduced slippage, ensuring efficient power transfer from the engine.
• Durable Construction: Built with heavy-duty components to withstand the high vibration, extreme temperatures, and harsh environments typical of excavator operations.
• Enhanced Charging Stability: Features a built-in voltage regulator that provides stable output, protecting sensitive electronic controls and prolonging battery life.
• Rigorous Testing: Each unit undergoes outgoing inspection and machinery test reports to verify performance before shipment, ensuring you receive a fully functional product.

Technical Specifications

OEM Cross-Reference

This alternator is a direct cross-reference for the following original equipment manufacturer (OEM) part numbers. Use these numbers to verify compatibility with your current unit.

• 212-8561 (Caterpillar)
• 34368-01100 (Caterpillar / Komatsu Cross-Reference)
• JFZ2520D (Chinese Standard Model Number)

Note: While these numbers are direct cross-references, always confirm the physical configuration (mounting bracket, plug type) matches your failed unit.

Compatibility

This alternator is specifically designed and commonly used for the following machinery and engine models:

• Excavator Models: Caterpillar E320, E320B, E320D
• Engine Models: Commonly installed on the diesel engines powering these excavator models (e.g., Cat 3066, 3116, or 3126 series engines used in the 320 series).
• Applications: Construction, Industry, Agriculture, Genset, Marine, and Material Handling equipment.

Global Supply & Distribution

We offer worldwide shipping and maintain a robust supply chain to serve international B2B buyers. Our distribution network covers major markets including North America, Europe, Southeast Asia, the Middle East, Africa, and Oceania.

With our strategic location in Guangdong, China, we provide fast and efficient delivery to major international ports and industrial centers. We have extensive experience in international trade, handling all necessary export documentation and compliance requirements to ensure a smooth transaction for our global partners.

Quality Assurance

Every alternator is manufactured in an ISO-compliant facility with strict quality control measures. Our commitment to quality includes:

• Manufacturing Standards: Produced to meet or exceed OEM specifications.
• Testing: Each unit undergoes a comprehensive machinery test report and video outgoing inspection to verify electrical output and mechanical integrity.
• Warranty: Backed by a 6-month warranty against manufacturing defects, providing you with peace of mind and purchase security.

FAQ

Q: How can I confirm this alternator fits my Caterpillar E320D?
A: We recommend checking the part number on your existing alternator. If it reads 212-8561 or 34368-01100, this JFZ2520D unit is a direct replacement. Additionally, verify the plug connector type (e.g., 2-pin or 3-pin) and the mounting ear configuration to ensure a perfect mechanical fit.

Q: What is the installation procedure for this 28V alternator?
A: Installation is a straightforward bolt-on replacement. First, disconnect the battery negative terminal. Then, remove the belt tension, unbolt the old alternator, and disconnect the wiring harness. Install the new unit by reversing the process, ensuring all electrical connections are tight and the belt is properly tensioned on the 12PK pulley. Always consult your machine’s service manual for specific torque specs and procedures.

Q: What maintenance is required for this alternator?
A: This is a sealed, maintenance-free unit. However, to ensure long life, periodically check the drive belt for wear and proper tension. Keep the alternator clean from excessive dirt, oil, and debris which can impede cooling. Ensure all electrical connections remain clean and tight to prevent voltage drops and overheating.