Product Overview

This high-performance cylinder liner is engineered as a direct replacement for JCB’s 4.4L diesel engines, commonly found in their backhoe loaders and telescopic handlers. Designed for durability under demanding conditions, it is a critical component for engine rebuilds and overhauls. We supply this part globally, with significant experience serving key markets in North America, Europe, the Middle East, and Asia-Pacific, ensuring reliable performance for construction and industrial equipment worldwide.

Key Features & Benefits

• Premium Material Construction: Manufactured from high-grade, centrifugally cast iron alloy for superior wear resistance, excellent heat dissipation, and long service life.
• Precision Engineering: Machined to exact OEM specifications, ensuring perfect fitment, optimal piston ring seal, and consistent compression.
• Enhanced Cooling & Lubrication: Designed as a wet liner with precise outer wall tolerances to maximize coolant flow and heat transfer, preventing overheating and thermal distortion.
• Corrosion & Cavitation Resistance: Treated surfaces resist pitting and corrosion from coolant, extending the component’s lifespan even in harsh operating environments.
• Cost-Effective Engine Rebuild Solution: Provides a reliable and affordable alternative to OEM parts, restoring engine performance and power output without compromise.

Technical Specifications

OEM Cross-Reference

This cylinder liner is designed to match the form, fit, and function of the original part. It serves as a direct replacement for the following OEM part numbers:

• JCB Part Number: 448/500, 448/550 (Series Reference)

Note: For precise cross-referencing, always verify the engine serial number and existing liner specifications against your application.

Compatibility

This cylinder liner is compatible with JCB diesel engines from the 4.4L displacement family. It is a critical replacement part for the following equipment models (non-exhaustive list):

• JCB Backhoe Loaders: 3CX, 4CX (fitted with the 448 engine)
• JCB Telescopic Handlers: 535, 540, 550 (fitted with the 448 engine)
• Engine Models: JCB 448, and its derivatives.

Global Supply & Distribution

We are a trusted global supplier of heavy equipment engine components. Our logistics network ensures efficient delivery to major industrial hubs and ports worldwide.

• Worldwide Shipping: Available via air, sea, and express courier to all continents.
• Key Markets Served: North America (USA, Canada), European Union, United Kingdom, Australia, Middle East (UAE, Saudi Arabia), and Asia (Singapore, Southeast Asia).
• Fast Delivery: Consolidated shipments to major ports like Rotterdam, Los Angeles, Singapore, and Jebel Ali for cost-effective bulk orders.
• Export Compliance: All shipments are prepared with professional commercial invoices, packing lists, and comply with international trade regulations for smooth customs clearance.

Quality Assurance

Every cylinder liner is subject to rigorous quality control to meet the high standards required for diesel engine applications.

• Manufacturing Standards: Produced in ISO-certified facilities using advanced CNC machining and honing processes.
• Dimensional Inspection: 100% checked for critical dimensions including bore diameter, wall thickness, and flange specifications.
• Surface Finish Verification: Honing pattern and surface roughness are verified to ensure proper oil retention and ring seating.
• Warranty: Backed by a standard warranty against manufacturing defects. Specific terms are provided with the commercial invoice.

FAQ

Q: How do I confirm this liner is the correct part for my specific JCB engine?
A: The most reliable method is to match the engine serial number and model. This liner is designed for the JCB 4.4L (448) engine family. We recommend consulting your engine’s service manual or contacting our technical support with your equipment model and serial number for verification before purchase.

Q: Is this a dry or wet liner, and what is the installation procedure?
A> This is a wet liner, meaning it comes into direct contact with the engine coolant. Installation requires precise cleaning of the engine block counterbore, checking protrusion height with a dial gauge, and using a proper liner installation tool to avoid distortion. Always use new sealing rings (O-rings) and follow the engine manufacturer’s torque specifications and sequence.

Q: Can I purchase a single liner, or do I need to replace the full set?
A> While a single liner can be replaced if only one cylinder is damaged, for optimal engine balance and performance, it is highly recommended to replace all liners as a matched set during a major overhaul. This ensures uniform wear characteristics and compression across all cylinders.

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 .