Caterpillar C18 Starter Motor 24V 11T 9kW 4789866 478-9866 Heavy Duty Diesel Engine Parts

Product Details

Product Overview

This high-performance Caterpillar C18 Starter Motor (24V 11T 9kW) is a direct replacement for OEM part numbers 4789866 and 478-9866. Designed specifically for Caterpillar C18 diesel engines, this starter motor delivers reliable cranking power for heavy-duty machinery in mining, construction, and industrial applications. We serve a global clientele, with major markets in North America, Europe, the Middle East, Asia-Pacific, and South America, ensuring fast and secure shipping to industrial hubs worldwide.

Key Features & Benefits

• Heavy-Duty 9kW Power: Provides superior torque for reliable cold starts and consistent performance under extreme conditions.
• 24V Electrical System: Engineered specifically for 24-volt systems, ensuring compatibility with standard heavy equipment electrical architectures.
• 11-Tooth Pinion Gear: Precision-machined 11-tooth drive gear ensures a perfect mesh with the C18 flywheel ring gear for smooth, no-slip engagement.
• Durable Construction: Built with high-grade materials and robust windings to withstand vibration, heat, and continuous duty cycles.
• Direct OEM Replacement: Matches the exact specifications of the 4789866 / 478-9866 part, making installation straightforward with no modifications required.

Technical Specifications

OEM Cross-Reference

This starter motor is a direct replacement for the following OEM and cross-reference numbers:

• OEM Caterpillar: 4789866, 478-9866
• Alternate / Competitor Crosses: 10R-6052, 10R6052, 248-5560

Note: Always verify the voltage (24V), tooth count (11T), and mounting configuration against your existing starter before purchase.

Compatibility

• Engine Models: Caterpillar C18 (all variants, including ACERT technology models).
• Vehicle/Machine Applications:
  • Caterpillar 740, 740B, 740C, 740D Articulated Trucks
  • Caterpillar 836, 836G, 836H Landfill Compactors
  • Caterpillar 844, 844H Wheel Dozers
  • Caterpillar 854G, 854K Wheel Dozers
  • Caterpillar 988G, 988H, 988K Wheel Loaders
  • Caterpillar 990, 990H, 990K Wheel Loaders
  • Caterpillar 992G, 992K Wheel Loaders
  • Caterpillar PM-201, PM-102, PM-200 Cold Planers

Global Supply & Distribution

• Worldwide Shipping: We offer reliable shipping via sea, air, and express couriers (DHL, FedEx, UPS) to all major international destinations.
• Major Markets Served: United States, Canada, Brazil, Chile, Australia, United Kingdom, Germany, UAE, Saudi Arabia, South Africa, Singapore, and Indonesia.
• Fast Delivery: Stocked inventory ensures quick dispatch to ports like Houston, Rotterdam, Shanghai, Dubai, and Santos.
• Trade Compliance: Experienced in international export documentation and customs clearance for heavy machinery parts.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001 certified facilities, ensuring consistent quality control.
• Testing: Each starter motor undergoes rigorous bench testing for voltage, amperage draw, torque output, and pinion engagement before shipment.
• Warranty: Backed by a standard 12-month warranty against manufacturing defects. Extended warranty options are available upon request.

FAQ

Q1: Will this starter motor fit my Caterpillar C18 engine if the original part number is 10R-6052?
A: Yes, the 4789866 (478-9866) is a direct cross-reference for the 10R-6052 starter motor. However, we strongly recommend comparing the physical dimensions, mounting bolt pattern, and electrical connector type to ensure a perfect fit for your specific machine model.

Q2: What is the correct installation procedure for this 24V starter?
A: Always disconnect the battery negative terminal before installation. Ensure the flywheel housing is clean and free of debris. Apply a small amount of anti-seize compound to the mounting bolts. Torque the mounting bolts to the manufacturer’s specification (typically 150-170 Nm for C18 applications). Reconnect the battery, ensuring correct polarity (positive to the solenoid terminal, negative to the chassis ground).

Q3: How can I extend the service life of this starter motor?
A: Avoid prolonged cranking (limit to 15-20 seconds per attempt with a 2-minute cool-down period). Regularly inspect and clean the electrical connections to prevent voltage drops. Ensure the engine’s battery and charging system are in good condition to avoid under-voltage or over-voltage stress on the starter.