Starter Motor 12V 2.5kW 15T 129400-77012 129129-77010 for Yanmar 4TNE88 Engine Parts

Product Details

Product Overview

This high-performance starter motor is a direct replacement for Yanmar 4TNE88 diesel engines, offering reliable 12V 2.5kW power output with a 15-tooth pinion gear. Engineered to meet OEM specifications, this unit carries critical part numbers 129400-77012 and 129129-77010, ensuring accurate fitment for a wide range of industrial, agricultural, and construction machinery.

Designed for demanding B2B applications, this starter motor provides the cranking torque necessary for cold starts and continuous operation in heavy equipment. Whether you are servicing a Yanmar-powered generator set, excavator, or marine engine, this component offers a cost-effective alternative without compromising on durability or performance.

Key Features & Benefits

• Precision Fitment: Direct OEM replacement for Yanmar 4TNE88 engines with verified part numbers 129400-77012 and 129129-77010
• Robust Power Output: 12V 2.5kW (3.35 HP) rating ensures reliable cranking even in cold weather conditions
• Durable Construction: Heavy-duty housing and precision-engineered components withstand vibration and thermal stress in harsh environments
• Verified Compatibility: 15-tooth pinion gear matches OEM gear reduction specifications for proper engagement
• Rigorous Testing: Each unit undergoes outgoing inspection with video documentation and machinery test reports provided
• Global Logistics Support: Professional packaging (plastic bag, box, carton) ensures safe transit to any international destination
• After-Sales Confidence: 6-month warranty with online technical support for installation and troubleshooting

Technical Specifications

OEM Cross-Reference

This starter motor directly replaces the following Yanmar OEM part numbers:

• 129400-77012 (Primary OEM Number)
• 129129-77010 (Alternative OEM Number)

These numbers correspond to the original Yanmar starter motor assembly for the 4TNE88 engine platform. Always verify your existing part number before ordering to ensure compatibility.

Compatibility

This starter motor is commonly used for the following applications:

• Engine Models: Yanmar 4TNE88, 4TNE88-S, 4TNE88-B
• Equipment Types:
  • Construction machinery (excavators, loaders, compactors)
  • Agricultural tractors and harvesters
  • Industrial generators and pumps
  • Marine propulsion and auxiliary engines
  • Material handling equipment (forklifts, telehandlers)

Note: While designed for the 4TNE88 series, always cross-reference mounting points, electrical connections, and pinion engagement depth with your specific equipment.

Global Supply & Distribution

Our supply chain is optimized for international B2B transactions, serving customers across all major industrial regions:

• North America: Stock available for rapid delivery to US West Coast (Los Angeles, Seattle) and East Coast (New York, Savannah) ports
• Europe: Regular shipments to Rotterdam, Hamburg, and Antwerp for distribution throughout EU markets
• Asia-Pacific: Direct shipping from Guangdong manufacturing base to Singapore, Tokyo, Sydney, and Dubai
• Middle East & Africa: Established routes to Jebel Ali (Dubai), Jeddah, and Durban
• South America: Service to Santos, Callao, and Buenos Aires ports

We maintain export-ready inventory with professional documentation including commercial invoices, packing lists, and certificates of origin. Bulk orders can be consolidated for container shipping (FCL/LCL) with typical lead times of 7-15 business days to major destinations.

Quality Assurance

Each starter motor undergoes rigorous quality control procedures before shipment:

• Manufacturing Standards: Produced in ISO 9001-compliant facilities in Guangdong, China
• Testing Protocol:
  • 100% functional test under load conditions
  • Voltage and amperage draw verification
  • Pinion gear engagement and disengagement testing
  • Insulation resistance measurement
• Documentation Provided: Video of outgoing inspection and machinery test report available upon request
• Warranty Coverage: 6-month warranty against manufacturing defects with online technical support for the warranty period
• After Warranty Service: Continued online support available for troubleshooting and installation guidance

FAQ

Q: How do I confirm this starter motor fits my Yanmar 4TNE88 engine?
A: Verify your current starter motor part number. If it matches 129400-77012 or 129129-77010, this unit is a direct replacement. Also confirm your engine serial number begins with 4TNE88. For non-standard applications, measure mounting bolt spacing (typically 2-bolt or 3-bolt pattern), pinion protrusion distance, and electrical terminal positions. We recommend sending photos of your original unit for pre-purchase verification.

Q: What maintenance is required for this starter motor?
A: This is a sealed, maintenance-free unit under normal operating conditions. However, for optimal lifespan in dusty environments (common in construction/mining), periodically inspect electrical connections for corrosion and ensure the mounting bolts remain tight. If the starter engages slowly, check battery voltage (minimum 12.4V under load), cable gauge (recommend 4 AWG or larger for runs over 3 feet), and ground connections. Avoid prolonged cranking (max 30 seconds on, 2 minutes cool-down).

Q: Can this starter be used on other Yanmar engine models beyond the 4TNE88?
A: While primarily designed for the 4TNE88 series, the 12V/2.5kW/15T configuration may be compatible with select other Yanmar industrial engines sharing the same mounting pattern (e.g., 4TNE84, 4TNE94 in some applications). However, we cannot guarantee fitment on non-listed models without verification. Critical differences may include flywheel ring gear tooth count, starter mounting flange depth, or electrical connector type. Always cross-reference with your engine’s service manual before installation.