LR4105 Piston Ring Set – China Engine Parts for Excavator, Forklift, Truck & Loader

Product Details

Product Overview

This LR4105 Piston Ring set is a high-quality replacement component specifically designed for the LR4105 diesel engine, a common power unit in a wide range of Chinese heavy machinery. Manufactured by, this piston ring set is engineered to restore compression, reduce oil consumption, and optimize combustion efficiency in your engine.

While the LR4105 is a standard engine model, this piston ring set is commonly used for applications including excavators, forklifts, trucks, loaders, bulldozers, and buses. It is critical to verify the specific engine model and ring configuration (e.g., top ring, second ring, oil ring) against your existing parts to ensure a proper fit. This set is supplied at OEM standard size, making it a direct replacement for worn or failed rings in a rebuild or overhaul scenario.

Key Features & Benefits

• OEM Standard Dimensions: Manufactured to original equipment manufacturer (OEM) size specifications, ensuring a precise fit within the LR4105 cylinder liner and piston grooves without requiring modification.
• Enhanced Engine Performance: Restores proper cylinder sealing, leading to improved compression, increased horsepower, better fuel economy, and reduced exhaust emissions.
• Durable Material Construction: Constructed from high-strength alloy cast iron or steel, designed to withstand the extreme heat and pressure of diesel combustion cycles for extended service life.
• Reduced Oil Consumption: The precisely engineered oil ring effectively scrapes excess oil from the cylinder wall, preventing oil from entering the combustion chamber and reducing oil consumption.
• Comprehensive Application Range: Suitable for a variety of heavy-duty equipment including excavators, forklifts, loaders, trucks, and bulldozers, making it a versatile stock item for repair shops and parts dealers.
• Rigorous Quality Control: Each ring set undergoes inspection, with outgoing video inspection and machinery test reports available upon request, ensuring consistent quality standards.

Technical Specifications

OEM Cross-Reference

The following OEM or original part numbers are cross-referenced for the LR4105 piston ring set. Please verify your specific engine serial number and ring pack configuration against this list:

• LR4105 (Standard Engine Model Number)
• LR4105 Ring Set

Note: This part is a direct replacement for the original piston ring set used in LR4105 engines. If you have a specific OEM brand number (e.g., Yuchai, Changchai, or other Chinese engine manufacturer numbers), please contact our sales team for cross-verification.

Compatibility

This piston ring set is designed for the LR4105 diesel engine. Based on common industry applications, it is suitable for use in the following equipment types:

• Excavators: Commonly used for small to medium-sized excavators.
• Forklifts: Suitable for counterbalance and heavy-duty forklifts.
• Loaders: Fits wheel loaders and skid steer loaders.
• Trucks: Used in light to medium-duty trucks and buses.
• Bulldozers: Applies to small bulldozer models.
• Other Equipment: Generators, agricultural machinery, and industrial engines.

Fitment is inferred based on the LR4105 engine model. Always confirm engine model and ring dimensions before purchase.

Global Supply & Distribution

We offer worldwide shipping for this LR4105 piston ring set, serving B2B clients across North America, Europe, Asia-Pacific, the Middle East, Africa, and South America. Our logistics network ensures fast delivery to major ports and industrial centers, including Los Angeles, Rotterdam, Dubai, Shanghai, and Singapore.

We have extensive export experience with international trade compliance, providing necessary documentation (commercial invoice, packing list, bill of lading, and certificates of origin) for smooth customs clearance. Bulk orders are available for distributors and repair centers.

Quality Assurance

Our LR4105 piston rings are manufactured under strict quality control processes in compliance with international standards. Each batch is tested for hardness, tensile strength, and dimensional accuracy to ensure reliable performance. The product comes with a standard 6-month warranty against manufacturing defects. Machinery test reports and video outgoing inspection are available upon request to verify quality before shipment.

FAQ

Q1: How do I confirm that this LR4105 piston ring set is compatible with my engine?
A: First, verify your engine model is LR4105. Then, remove the cylinder head and inspect the existing piston rings. Measure the cylinder bore diameter (OEM standard size is typically around 105mm for LR4105). Confirm the ring pack configuration (number of rings and their profile). If you have the old rings, compare them visually with the new set. For further assistance, contact our technical support with your engine serial number.

Q2: What is the recommended installation procedure for these piston rings?
A: Installation should be performed by a qualified diesel mechanic. Key steps include: cleaning the piston ring grooves thoroughly, checking ring end gap in the cylinder bore (must be within service limits), using a ring expander tool to avoid damage, and staggering the ring gaps around the piston (typically 120 degrees apart). Always lubricate the rings and cylinder wall with clean engine oil before reassembly.

Q3: How do I maintain the LR4105 engine to extend the life of the new piston rings?
A: Use high-quality diesel engine oil with the correct viscosity (e.g., 15W-40 or 20W-50 as per manufacturer spec). Change oil and oil filters at regular intervals. Ensure the air filter is clean to prevent abrasive dust from entering the cylinders. Avoid prolonged idling and overloading the engine. Monitor coolant temperature to prevent overheating, which can cause ring sticking or failure.