Caterpillar 6V5539 Starter Motor | 12V 11T Diesel Engine Starter for Excavator & Heavy Equipment

Product Details

Product Overview

This high-performance Starter Motor 6V5539 is a direct replacement unit specifically designed for Caterpillar engine parts used in heavy machinery and excavators. Manufactured to meet or exceed OEM specifications, this starter motor ensures reliable cranking power for demanding work environments. We offer global shipping to major industrial hubs including the USA, Canada, Australia, UAE, Europe, and Southeast Asia, ensuring fast delivery to your port or warehouse.

Key Features & Benefits

• Heavy-Duty Construction: Built with high-grade materials and precision engineering to withstand extreme temperatures, vibration, and continuous operation in mining and construction sites.
• 100% New & Tested: This is a brand new unit, not a remanufactured part. Each starter undergoes rigorous performance testing to ensure 12V 11T specifications are met.
• Easy Installation: Direct bolt-on replacement for the original Caterpillar 6V5539 part, requiring no modifications. Includes all necessary mounting hardware.
• Enhanced Durability: Features sealed bearings and a robust solenoid to prevent dust and moisture ingress, extending service life significantly.
• Cost-Effective Solution: Offers factory-quality performance at a competitive price point, reducing downtime and maintenance costs for your fleet.

Technical Specifications

OEM Cross-Reference

This starter motor replaces the following OEM and aftermarket part numbers:

• Caterpillar: 6V5539, 6V-5539
• Delco Remy: 39MT, 8200063
• Bosch: 0-001-208-042
• Alternative Numbers: 6N7891, 6N-7891

Compatibility

This 6V5539 starter motor is compatible with the following Caterpillar engine models and equipment:

• Engines: 3208, 3304, 3306, 3406, 3408
• Excavators: Caterpillar 225, 235, 245, 320, 325
• Loaders: 950B, 966D, 966E, 980C
• Dozers: D6D, D6H, D7G, D8K
• Other Equipment: 12G, 14G, 16G Motor Graders; CS-533, CP-563 Compactors

Note: Always verify your existing starter’s voltage, tooth count, and mounting configuration before purchase.

Global Supply & Distribution

We are a trusted supplier in the heavy equipment parts industry with a strong global logistics network. Our distribution capabilities include:

• Major Ports Served: Los Angeles, Houston, Rotterdam, Dubai (Jebel Ali), Shanghai, Singapore, Sydney.
• Shipping Methods: Express (DHL, FedEx, UPS) for urgent orders; Sea freight for bulk quantities.
• International Compliance: All parts are packaged and documented for smooth customs clearance worldwide.
• B2B Focus: We support wholesale distributors, repair shops, and mining companies with consistent stock and competitive pricing.

Quality Assurance

Our starter motors are manufactured in ISO 9001 certified facilities. Every unit undergoes a 5-point inspection process including voltage draw test, no-load test, solenoid engagement test, and visual inspection. We offer a 12-month warranty against manufacturing defects. For any quality concerns, our technical team provides responsive after-sales support.

FAQ

Q1: Can this 6V5539 starter motor be used on a Caterpillar 3306 engine in a D6H dozer?
A: Yes, the 6V5539 is a standard fitment for the 3306 engine. However, we recommend checking the mounting flange pattern and the number of teeth on the pinion gear (11T) to confirm compatibility with your specific flywheel housing.

Q2: What is the difference between a new 6V5539 and a remanufactured unit?
A: This is a brand new unit, meaning all internal components (armature, brushes, solenoid, bearings) are new. Remanufactured units may have reused cores. A new unit typically offers longer service life and a lower risk of early failure, especially in high-vibration applications like excavators.

Q3: How should I test the starter motor before installation?
A: Before installation, bench test the starter with a 12V battery. Connect the positive terminal to the main battery stud and the negative to the housing. Briefly touch a jumper wire from the positive to the solenoid “S” terminal. The pinion should extend and the motor should spin freely. If not, check your battery voltage and connections.