S4D95 4D95 Mahle Cylinder Liner and Piston Kit with Piston Ring Set for Diesel Engine Excavator

Product Details

Product Overview

This comprehensive engine rebuild kit features a high-quality Mahle Cylinder Liner and Piston Kit, specifically engineered for the Komatsu S4D95 and 4D95 diesel engine platforms. As a critical component for excavator and heavy machinery engines, this kit includes precision-ground cylinder liners, matched pistons, and a complete piston ring set designed to restore compression, reduce oil consumption, and maximize engine efficiency.

Manufactured to OEM specifications, this kit is commonly used in various excavator models and industrial machinery powered by the S4D95 diesel engine. Whether you are performing a complete engine overhaul or a top-end rebuild, this genuine Mahle parts kit ensures reliable fitment and long service life under demanding working conditions.

Key Features & Benefits

• OEM-Grade Precision: Manufactured by Mahle, a global leader in engine component technology, ensuring exact dimensional tolerances and material composition matching original equipment.
• Complete Kit Solution: Includes cylinder liners, pistons, and piston rings as a matched set, eliminating compatibility concerns during engine assembly.
• Enhanced Durability: Liners feature advanced wear-resistant cast iron construction with hardened surfaces to withstand high combustion pressures and thermal stress.
• Optimized Oil Control: Premium piston ring set incorporates chrome-plated top rings and multi-piece oil rings for superior oil scraping and reduced blow-by.
• 100% New Condition: Brand new, never remanufactured components with no core charge required, ready for immediate installation.
• Application Versatility: Suitable for both naturally aspirated and turbocharged versions of the S4D95 and 4D95 engine series.

Technical Specifications

OEM Cross-Reference

This Mahle S4D95 cylinder liner and piston kit replaces or corresponds to the following OEM part numbers. Please verify your engine’s serial number for exact compatibility.

• Komatsu OEM: 6205-21-1100, 6205-21-1110, 6205-21-1120
• Mahle Reference: 032 01 00, 032 02 00 (liner), 032 03 00 (piston)
• Alternative References: 4D95-Piston-Kit, S4D95-Liner-Kit

Compatibility

This kit is specifically designed for the following engine models and is commonly used for excavator applications:

• Engine Models: Komatsu S4D95, 4D95, 4D95L
• Common Applications: Komatsu PC120-5, PC120-6, PC130-6, PC150-5, PC200-5 (early models with S4D95 engine)
• Other Equipment: Wheel loaders, bulldozers, and generator sets powered by the S4D95 engine family

Note: Fitment is based on engine model identification. Always verify your engine serial number and liner dimensions before purchase.

Global Supply & Distribution

We offer worldwide shipping capabilities from our distribution hub in Shanghai, China, ensuring fast and reliable delivery to major industrial centers globally. Our logistics network covers:

• North America: Express delivery to Los Angeles, Houston, Chicago, Toronto, and Vancouver ports within 5-7 business days.
• Europe: Direct shipping to Rotterdam, Hamburg, Antwerp, and Felixstowe with customs-cleared delivery.
• Asia-Pacific: Next-day delivery to major Chinese ports and 2-3 day delivery to Japan, South Korea, Singapore, and Australia.
• Middle East & Africa: Regular shipments to Dubai, Jeddah, Durban, and Lagos with tracking available.
• South America: Reliable service to Santos, Buenos Aires, and Callao ports.

With years of export experience and full compliance with international trade regulations, we provide professional documentation, commercial invoices, and packing lists for smooth customs clearance.

Quality Assurance

Each Mahle component is manufactured under strict ISO 9001 and IATF 16949 certified production facilities. Our quality control process includes:

• Dimensional inspection of liner bore, piston skirt diameter, and ring groove widths.
• Material hardness testing and microstructure analysis.
• Surface finish verification for cylinder liner honing patterns.
• Ring end gap measurement and tension testing.

We back every kit with a 3-month warranty against manufacturing defects. After-warranty service includes online technical support and replacement part sourcing assistance.

FAQ

Q1: Will this kit fit my Komatsu PC120-6 excavator?
This kit is designed for the S4D95 engine, which powers many Komatsu PC120-6 models. However, we recommend checking your engine serial number and measuring the existing liner height (typically 145mm for S4D95) to confirm compatibility. Some PC120-6 models may use the later S4D95L variant with slight dimensional differences.

Q2: Do I need any special tools for installation?
Yes, professional installation is recommended. You will need a cylinder liner puller and installer tool, a piston ring compressor, and a torque wrench capable of 80-120 Nm for cylinder head bolts. The liners are a dry type and require careful alignment with the block deck surface. We recommend following the Komatsu shop manual for torque sequences and specifications.

Q3: What is the recommended maintenance after installing this kit?
After installation, follow a strict break-in procedure: operate the engine at varying loads (not full load) for the first 50 hours. Change engine oil and filter after the initial 50-hour break-in period. Use API CF-4 or higher grade diesel engine oil with the correct viscosity (SAE 15W-40 recommended for most climates). Regularly check coolant levels and ensure the cooling system is free of debris to prevent liner cavitation.