The 3981507 fuel injector is designed specifically for the Caterpillar C7.1 diesel engine and is widely used in excavators such as the 320D2, E320D2, and 336D. This injector precisely controls fuel injection quantity and timing, improving engine combustion efficiency, reducing emissions, and increasing power output and fuel economy. Made of high-strength materials and precision machining, it ensures long-term stable operation and is an essential component in the engine's fuel system.
Product Features
- High-Precision Injection: Precisely controls fuel quantity and injection timing to improve engine combustion efficiency.
- Reliable and Durable: Utilizes high-strength materials and a wear-resistant design to withstand high-temperature and high-pressure operating environments.
- Stable Performance: Maintains consistent output even under prolonged, high-load operation.
- Easy Installation: Standard interface design allows for easy replacement without additional modification.
Frequently Asked Questions
What products do you specialize in?
We specialize in excavator engine spare parts including cylinder blocks, cylinder heads, crankshafts, complete engine assemblies, pistons, liners, rings, camshafts, connecting rods, oil pumps, water pumps, valves, and all related engine components.
What if I only know the excavator model but not the part numbers?
You can send us photos of your existing parts, nameplate information, or dimensional specifications for reference and identification.
Do you accept sample orders?
Yes, we can supply samples of parts we have in stock. Customers are responsible for sample costs and shipping fees.
Do you test products before shipment?
All products undergo 100% quality testing before delivery to ensure performance and reliability.
What is your policy for defective items?
Our products are thoroughly tested, but if any issues arise, our professional after-sales team will promptly address and resolve them.
