Komatsu PC200-7 Crankshaft Pulley 6735-31-8120 6732-31-8120 for S6D102 Engine

Product Details

Product Overview

This high-quality Komatsu PC200-7 Crankshaft Pulley is a precision-engineered replacement component designed to maintain optimal belt drive performance in your diesel engine system. Identified by OEM part numbers 6735-31-8120 and 6732-31-8120, this pulley is specifically manufactured for the Komatsu S6D102 engine series commonly used in PC200-7 excavators.

As a critical drivetrain component, the crankshaft pulley transfers rotational energy from the engine’s crankshaft to drive auxiliary systems including the alternator, water pump, and air conditioning compressor. Our pulley is manufactured to OEM specifications, ensuring proper belt alignment and tension characteristics for reliable long-term operation in demanding construction and industrial environments.

This component is suitable for a wide range of heavy equipment applications including construction machinery, industrial equipment, agricultural tractors, generator sets, marine engines, and material handling systems. Each unit undergoes rigorous quality inspection to ensure dimensional accuracy and structural integrity before shipment.

Key Features & Benefits

• OEM-Spec Dimensions – Manufactured to match original Komatsu specifications (6735-31-8120 / 6732-31-8120), ensuring direct bolt-on replacement without modifications
• Durable Construction – Precision-machined from high-strength materials to withstand continuous vibration and torque loads in heavy-duty diesel applications
• Belt Compatibility – Designed with correct groove profile and diameter for proper serpentine or V-belt engagement, reducing slippage and premature wear
• Balanced Rotation – Dynamic balancing minimizes harmonic vibration that can damage crankshaft bearings and auxiliary components
• Corrosion Resistance – Protective surface treatment prevents rust formation in humid or marine environments
• Global Logistics Support – Ready inventory for fast worldwide shipping to North America, Europe, Asia-Pacific, Middle East, and Africa

Technical Specifications

OEM Cross-Reference

This crankshaft pulley directly replaces the following original Komatsu part numbers:

• 6735-31-8120 – Primary OEM Number
• 6732-31-8120 – Alternative OEM Number

Note: Always verify your existing part number before ordering. Cross-reference with your engine serial number for guaranteed compatibility.

Compatibility

This crankshaft pulley is commonly used for the following applications:

• Engine Models: Komatsu S6D102 diesel engine
• Excavator Models: Komatsu PC200-7, PC200LC-7
• Applications: Construction machinery, industrial equipment, agricultural tractors, generator sets (genset), marine propulsion, material handling equipment

Fitment confirmation: Please verify your engine model and existing part number before purchase. While this pulley is designed for the S6D102 engine, minor variations may exist between sub-models.

Global Supply & Distribution

As a specialized exporter of heavy equipment engine components, maintains a robust global supply chain capable of delivering to virtually any international destination. Our primary markets include:

• North America: USA, Canada, Mexico – Fast delivery to major ports (Los Angeles, Houston, Vancouver)
• Europe: Germany, UK, Netherlands, France, Italy – Express shipping to Rotterdam, Hamburg, Felixstowe
• Asia-Pacific: Singapore, Australia, Japan, South Korea – Strategic stock points for rapid dispatch
• Middle East & Africa: UAE, Saudi Arabia, South Africa, Nigeria – Reliable logistics partners
• Latin America: Brazil, Chile, Peru – Competitive freight rates to Santos, Callao

We offer flexible shipping options including air freight (3-7 days), sea freight (15-35 days), and express courier services (DHL, FedEx, UPS). All exports comply with international trade regulations and include proper customs documentation.

Quality Assurance

Every crankshaft pulley undergoes strict quality control procedures to ensure reliable performance:

• Manufacturing Standards: Produced in ISO-certified facilities in Guangdong, China
• Dimensional Inspection: Each unit is checked against OEM specifications using precision measuring equipment
• Material Verification: Chemical composition and hardness testing of raw materials
• Visual & Functional Testing: Surface finish inspection and rotational balance verification
• Documentation: Video outgoing inspection and machinery test reports available upon request
• Warranty: 6-month warranty against manufacturing defects covering material and workmanship

FAQ

Q1: How can I confirm this crankshaft pulley fits my Komatsu PC200-7 excavator?
A: First, locate your existing pulley part number stamped on the component or check your engine serial number. This pulley is designed for the S6D102 engine in PC200-7 models. If your existing part is 6735-31-8120 or 6732-31-8120, it is a direct replacement. For absolute certainty, measure the pulley diameter and belt groove width, or contact our technical team with your machine’s serial number.

Q2: What maintenance should I perform when replacing the crankshaft pulley?
A: When replacing the crankshaft pulley, always inspect the serpentine belt or V-belts for wear, cracking, or glazing. Replace belts if they show signs of deterioration. Check the crankshaft front seal for leaks and replace if necessary. Torque the pulley retaining bolt to manufacturer specifications (typically 300-400 Nm for S6D102 engines) and verify proper belt tension after installation.

Q3: Can this pulley be used on other Komatsu models besides PC200-7?
A: While primarily designed for the PC200-7 with S6D102 engine, this pulley may be compatible with other Komatsu models using the same engine series. Common cross-applications include certain PC200-6 variants and some WA200 wheel loaders. However, we recommend verifying part number compatibility before purchase, as pulley dimensions may vary between model generations.