Komatsu Excavator Engine Crankshaft 4D105 S4D105-3 6131-32-1101 6131-32-1100

Product Details

Product Overview

We are a leading supplier of high-quality diesel engine components for Komatsu excavators, specializing in the 4D105 and S4D105-3 series. This premium Engine Crankshaft is a direct replacement for OEM parts 6131-32-1101 and 6131-32-1100. Designed to restore your engine’s performance and reliability, this component is manufactured for global distribution, serving major markets including North America, Europe, Asia-Pacific, the Middle East, and Africa. We offer competitive pricing with fast shipping to major industrial ports worldwide.

Key Features & Benefits

• Premium Build Quality: Manufactured from high-strength forged steel for superior durability and resistance to torsional stress.
• Precision Engineering: Machined to exact OEM tolerances for a perfect fit and optimal engine balance, reducing vibration and wear.
• Enhanced Performance: Designed to withstand high combustion pressures and temperatures, ensuring long service life in demanding excavator applications.
• Direct Fitment: A true bolt-in replacement for OEM parts 6131-32-1101 and 6131-32-1100, requiring no modifications.
• Cost-Effective Solution: Provides a reliable aftermarket alternative to expensive genuine Komatsu parts without compromising on quality.

Technical Specifications

OEM Cross-Reference

This crankshaft is a direct replacement for the following OEM numbers:

• 6131-32-1101 (Komatsu Original)
• 6131-32-1100 (Komatsu Original)

Compatibility

This crankshaft is specifically designed for the following Komatsu engine models and their applications:

• Engine Models: Komatsu 4D105, S4D105-3
• Vehicle Applications: Komatsu PC120-5, PC120-6, PC150-5, PC200-5, and other excavator models utilizing these engine series.
• Year Ranges: Generally compatible with machinery manufactured from the late 1980s to early 2000s. Please verify your engine model for exact fitment.

Global Supply & Distribution

We are equipped to handle international B2B orders of all sizes. Our logistics network ensures efficient delivery to major ports worldwide, including Los Angeles, Rotterdam, Shanghai, Jebel Ali, and Singapore. We serve a broad range of markets:

• North America: USA, Canada, Mexico
• Europe: UK, Germany, France, Netherlands, Italy
• Asia-Pacific: Japan, South Korea, Australia, Indonesia, Thailand
• Middle East & Africa: UAE, Saudi Arabia, South Africa, Nigeria
• South America: Brazil, Chile, Argentina

We offer various shipping options (by sea, air, or express) to meet your project deadlines and budget. Our export team handles all necessary customs documentation for a smooth transaction.

Quality Assurance

• Manufacturing Standards: Our products are manufactured in ISO 9001 certified facilities, ensuring consistent quality control.
• Warranty: We offer a standard 12-month warranty against manufacturing defects from the date of shipment.
• Testing: Each crankshaft undergoes rigorous inspections, including dimensional checks, hardness testing, and magnetic particle inspection (MPI) to ensure structural integrity.

FAQ

Q1: Is this crankshaft a direct replacement for the original Komatsu part?
A: Yes, this crankshaft is designed to be a direct bolt-in replacement for Komatsu OEM numbers 6131-32-1101 and 6131-32-1100. It meets the same dimensional and material specifications, ensuring a perfect fit without modifications.

Q2: What is the recommended installation procedure?
A: Installation should be performed by a qualified diesel mechanic. Key steps include: removing the old crankshaft, cleaning the engine block thoroughly, checking main bearing clearances with plastigauge, lubricating all bearing surfaces with assembly lube, and torquing the main bearing caps to the manufacturer’s specifications (typically 110-120 Nm for this engine series). We recommend replacing main and rod bearings, as well as the rear main seal, during installation.

Q3: How should I store the crankshaft before installation?
A: Store the crankshaft in a clean, dry environment. Keep it in its original packaging to protect it from dust and moisture. If storing for an extended period, apply a light coat of anti-rust oil or preservative to the machined surfaces (journals and crankpins) to prevent corrosion.