443-9475 C7.1 Engine Cylinder Liner Assembly 443-9475 Suitable for CAT 320D 320E 320GC Excavator Overhaul Kit
The
C7.1 cylinder liner assembly is suitable for C7.1 series diesel engines and is widely used in excavators and construction machinery. Made of high-strength alloy cast iron, it possesses excellent wear resistance and heat dissipation properties, restoring cylinder sealing and compression efficiency, and improving engine power and operational stability.
C7.1 Cylinder Liner Assembly Specifications
| State | Brand New |
| Product Name | C7.1 Cylinder Liner Assembly |
| Type | Cylinder Liner Repair Assembly |
| Material | High-strength alloy cast iron |
| Process | Precision honing / Heat treatment strengthening |
| Minimum Order Quantity | 1 set |
| Payment Method | Western Union, T/T |
| Shipping Method | UPS/DHL/EMS/TNT/FedEx |
Application Equipment: Excavators, loaders, generator sets, construction machinery
Function: Engine overhaul / Cylinder repair / Power restoration
Part Numbers (Partial)
| Piston | 443-9475 |
| Cylinder Liner | 276-7677 |
| Piston Ring | 443-9543 |
| Piston Pin | 317-6214 |
| Connecting Rod Bushing | 3112E031 |
Features and Advantages
High-strength alloy cylinder liners: Improve wear resistance and high-temperature resistance
Precision honing process: Enhances oil film retention and reduces friction loss
OEM standard size: Precise fit, no modification required
Optimized heat dissipation structure: Effectively reduces piston operating temperature
Extended engine life: Restores compression pressure and improves combustion efficiency
C7.1 Actual pictures of cylinder liner components

Guangzhou Minshun Machinery Equipment Co., Ltd.
We specialize in the sales and service of diesel engine assemblies and construction machinery parts. Our product line covers engine assemblies, filtration systems, electronic control components, hardware accessories, wiring harnesses, and electrical accessories. Our service area includes Canada, the United States, the United Kingdom, Mexico, the Netherlands, Kazakhstan, Mongolia, Russia, Australia, Malaysia, Turkey, Indonesia, Singapore, Thailand, South America, South Africa, and other countries and regions.
Our Product Range | Engine Rebuild Kit | Turbochargers | Engine Diesel Pumps | Engine Controllers (ECU) |
| Cylinder Blocks | Cylinder Heads | Water Pumps | Injectors |
| Starter Motors | Filters | Other Engine Accessories | Excavator Hydraulic Pumps |
| Swivel Components | Distributor Valves | Travel Motor Assemblies | Chassis Components and Other Accessories |


Frequently Asked Questions
Q1: What is your main products?
A1: We are specialized in the excavator engine spare parts, for example Main cylinder block, cylinder head, crankshaft, Engine assembly, piston, cylinder liner, piston ring, camshaft, connecting rod, oil pump, water pump, valve series products, movement, etc. almost all parts of the entire engine.
Q2: Do you test all products before shipping?
A2: Yes, we conduct 100% testing before shipping.
Q3: Which engine models is this Cylinder Liner Assembly compatible with?
A3: This product is designed for specific diesel engine models. If you can provide the engine model or original part number, we can confirm compatibility before shipping to avoid incompatibility issues.
Q4: Why is a complete ESN usually required for quoting a price for C7.1 piston assemblies?
A4: The C7.1 has multiple versions with different combustion bowl designs and emission standards, so the ESN is essential to ensure exact part compatibility and prevent engine failure.
Q5: Why is it recommended to replace the connecting rod bushings at the same time as replacing the cylinder liner assembly?
A5: Replacing the bushing ensures a precise fit with the new piston pin, preventing localized wear or "knocking" noises caused by minor play in the old, worn component.
Q6: How do you know if your cylinder liner is bad?
A6: A worn or damaged cylinder liner is usually indicated by excessive blow-by, low compression, high oil consumption, white or blue smoke, and loss of engine power.
Q7: What is the purpose of cylinder liner?
A7: A cylinder liner provides a durable, replaceable wear surface for the piston to move in, maintaining proper compression, reducing cylinder wear, and improving engine longevity and serviceability.
Why Choose Us?
• Over 20 years of focus on construction machinery – offering a full range of excavator assemblies and accessories.
• Get a Quote – Our professional team will provide you with a quote immediately upon receiving your requirements.