3P6816 Gear Pump for CAT 3306 Engine, D6C, D6D, D6E Construction Machinery
The 3P6816 gear pump is primarily used in hydraulic or lubrication systems of construction machinery and diesel engines. By stably delivering hydraulic or lubricating oil, it provides continuous and reliable power support to the system. This gear pump features a high-precision gear structure design, ensuring smooth operation and uniform flow output. It can operate reliably under high load and high pressure conditions for extended periods, meeting the reliability requirements of construction machinery. Its compact overall structure makes installation and maintenance convenient, suitable for use with various equipment.
| Part Number |
3P6816 |
| Type |
Gear Pump |
| Function |
Delivers hydraulic or lubricating oil, maintaining system pressure and flow rate |
| Structure |
External gear type |
| Replacement Part Numbers |
CA3P6816, 3P-6816, 3P6816 |
| Applicable Models |
CAT D6C D6D D6E D6G D6G2 |
Features and Advantages
• Stable Output: High gear meshing precision ensures continuous and uniform oil delivery, reducing pressure fluctuations.
• Reliable Structure: Robust overall design and strong wear resistance, suitable for long-term high-intensity operation.
• Strong Adaptability: Maintains excellent performance in high temperature, high pressure, and complex working conditions.
• Convenient Maintenance: Simple structure, easy disassembly and assembly, reducing future maintenance costs.
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 |

More products
Please click on the corresponding image to access the page














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 Gear Pump 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: Can you provide cross-reference information for OEM part numbers?
A4: Yes, we support original part interchange. Please provide the original part number, and we will verify the replacement part accordingly.
Q5: What should I do if there is a problem with the product?
A5: Our products undergo professional testing and are of very stable quality. If you do find any problems, please contact us. We have a professional after-sales team to help you solve the problem.
Why Choose Us?
• Over 20 years of experience specializing in construction machinery, engines, and parts – with stable experience supplying mainstream brands and models.
• Extensive experience in model matching enables us to provide customers with accurate parts selection, reducing procurement risks.
• A long-term, stable, and reliable supply system ensures reliable product sourcing and meets continuous procurement needs.
• For product information or quotations, our professional team will provide you with detailed answers immediately upon receiving your request.