Fuel Injector 4025334 for Engine 4B3.9 6B5.9

Keywords: 4025334 fuel injector, 4B3.9 6B5.9 injector assembly, cumm-ins diesel fuel injector, excavator engine fuel injection spare parts, construction machinery fuel injector, heavy‑duty engine fuel nozzle, aftermarket replacement fuel injector

Product Overview

Fuel Injector Part No.4025334 is a core fuel delivery component compatible with cumm-ins 4B3.9 and 6B5.9 diesel engines widely used on excavators and heavy‑duty machinery. It accurately atomizes diesel fuel and injects fine fuel mist into combustion chamber at precise timing, to realize full fuel combustion, stable power output and lower exhaust emission. This replacement injector fixes common engine issues including rough idle, insufficient power, excessive smoke, poor cold start and fuel leakage caused by original injector nozzle clogging, needle valve wear and internal component failure. Every fuel injector passes strict spray test, sealing inspection and injection volume calibration before leaving factory.

Detailed Specifications

Key Features & Advantages

• High‑precision nozzle assembly, excellent fuel atomization performance, promote full combustion and reduce black smoke emission.
• Strictly manufactured according to OEM dimension standards, direct installation without modification, stable fuel injection timing and injection quantity.
• Good internal sealing performance, effectively avoid fuel dripping and leakage, improve cold starting performance of diesel engine.
• Effectively restore engine power output, eliminate unstable idle speed and engine misfire caused by damaged original fuel injector.
• Suitable for cumm-ins 4B3.9, 6B5.9 engine overhaul, fuel system maintenance and injector replacement projects.

Application Scope

Fit Equipment: Excavators and heavy‑duty construction machinery powered by cumm-ins 4B3.9, 6B5.9 diesel engine. ‑ Widely used for machinery repair workshops, equipment refurbishment and engine fuel‑system overhaul projects.

Our Company Advantage

• We are professional supplier of full‑range construction machinery spare parts, supplying engine parts, hydraulic parts, electrical parts, seal kits and complete overhaul kits.
• Large ready stock for various machinery spare parts
• Factory‑direct wholesale competitive price
• Mixed‑order & one‑stop spare‑parts procurement supported
• Professional part‑number matching technical support service

Packaging & Shipping

• Neutral export carton with shock‑proof inner packing, prevent collision damage during long‑distance transportation
• Multiple shipping options: sea freight, air freight, international express for small trial orders
• Export documents such as Commercial Invoice, Packing List can be provided.

Contact Us

If you need more excavator spare parts or other construction machinery replacement components, please send your parts list to us. We will offer our best quotation for you quickly.