Product Overview

This professional-grade cylinder liner kit is engineered for the reliable Xinchai 4D30G31 diesel engine. Designed as a complete overhaul solution, it includes the cylinder liner, piston assembly, and piston rings, ensuring perfect compatibility and optimal performance restoration. We supply this high-quality kit to B2B clients worldwide, with significant demand from industrial, agricultural, and power generation sectors across North America, Europe, the Middle East, and Asia-Pacific.

Key Features & Benefits

• Complete Overhaul Solution: Includes all critical components (liner, piston, rings) for a comprehensive engine rebuild, saving sourcing time and ensuring part harmony.
• OEM-Spec Precision: Manufactured to exact OEM dimensions and tolerances for a perfect fit, reliable compression, and seamless installation.
• Enhanced Durability: Components are crafted from high-grade materials to withstand the high-pressure, high-temperature environment of diesel operation, extending engine service life.
• Optimized Performance: Precision-machined surfaces and proper ring tension promote efficient combustion, reduce oil consumption, and restore engine power and efficiency.
• Rigorous Quality Control: Each kit undergoes stringent inspection and testing, supported by machinery test reports and video outgoing-inspection documentation.

Technical Specifications

OEM Cross-Reference

This kit directly replaces the following OEM part numbers, ensuring perfect compatibility with your Xinchai engine.

• Cylinder Liner Kit: 495B-01005B
• Piston Assembly: 495B-04001, 495B-04001-1A
• Piston Ring Set: 490B-04100

Compatibility

This kit is specifically designed for the Xinchai 4D30G31 diesel engine. This engine platform is widely used in various applications, including:

• Construction Machinery: Excavators, loaders, compactors.
• Industrial Equipment: Pumps, compressors, industrial power units.
• Agricultural Machinery: Tractors, harvesters, irrigation systems.
• Power Generation: Diesel generator sets (Gensets).
• Marine: Auxiliary marine engines.
• Material Handling: Forklifts and other warehouse equipment.

Note: Always verify your engine’s model and serial number before purchase to ensure correct fitment.

Global Supply & Distribution

We are a leading supplier of heavy-duty engine components with a robust global logistics network. Our capabilities include:

• Worldwide Shipping: Reliable export to all major markets, including North America (USA, Canada, Mexico), Europe (Germany, UK, Poland, Italy), Asia-Pacific (Australia, Singapore, Indonesia), the Middle East (UAE, Saudi Arabia), and South America.
• Efficient Logistics: Fast container (FCL/LCL) and air freight options to major international ports and industrial hubs.
• Export Expertise: Extensive experience in international B2B trade, with full compliance documentation (commercial invoice, packing list, certificate of origin).
• Bulk & Wholesale Focus: Optimized for distributors, workshops, and fleet operators requiring reliable, high-volume supply chains.

Quality Assurance

Our commitment to quality ensures you receive parts that meet the demanding standards of professional engine rebuilds.

• Manufacturing Standards: Components are produced in ISO-certified facilities using advanced CNC machining and quality-controlled metallurgy.
• Comprehensive Warranty: Backed by a 6-month warranty against manufacturing defects.
• Verification & Testing: Every batch is subject to dimensional checks, material analysis, and performance validation. A machinery test report is provided with shipment.
• Post-Warranty Support: Dedicated online technical support is available for installation guidance and troubleshooting.

FAQ

Q1: Is this a complete kit for rebuilding one cylinder, and what exactly is included?
A1: Yes, this is a complete per-cylinder overhaul kit. It includes one cylinder liner (part of kit 495B-01005B), one piston assembly (495B-04001/1A), and one set of piston rings (490B-04100). For a multi-cylinder engine, you will need to order the corresponding number of kits.

Q2: Are the parts in this kit interchangeable with the original parts, or is honing/machining required?
A2: The cylinder liner is an OEM-size replacement designed for a direct fit. However, professional engine rebuilding practice always involves checking bore dimensions and performing final honing after liner installation to achieve the perfect surface finish and ring seal. We recommend installation by a qualified mechanic.

Q3: What documentation do you provide to verify quality for international imports?
A3: We provide full commercial export documentation. Crucially for quality verification, we can supply a machinery test report for the components and, upon request, a video outgoing-inspection record of the specific batch before shipment. This ensures transparency and confidence in the product’s condition upon arrival.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .