3964144 Injector Fuel Supply Tube provides rigid high-pressure diesel delivery for B2B excavator parts repair, replacement inventory, and wholesale sourcing.
The 3964144 Injector Fuel Supply Tube YNF19078 is a rigid high-pressure fuel line used within a compatible diesel injection system. It transfers pressurized diesel fuel through the corresponding injector supply circuit, where secure sealing and correct tube alignment are important for reliable installation.
Unlike a flexible fuel hose, this component is formed as a rigid metal tube. Its bends, end fittings, overall length, and connection orientation are designed around a specific fuel-system layout. A bent, damaged, leaking, corroded, or incorrectly installed injector tube may require replacement during diesel engine repair.
For B2B buyers, the 3964144 high pressure injector pipe should be verified by part number, overall tube shape, bend positions, total length, fitting design at both ends, connection thread or seat type, and existing-part photos. No engine or machine model has been supplied, so part-number and physical comparison should be prioritized before bulk purchasing.
| Parameter | Specification |
|---|---|
| YNF Part Number | YNF19078 |
| Part Number | 3964144 |
| Product Name | Injector Fuel Supply Tube |
| Alternative Name | High Pressure Fuel Pipe / Injector Fuel Line / Injection Steel Tube |
| Product Type | Rigid High-Pressure Fuel Line |
| Parts Category | Diesel Engine Fuel Injection Parts |
| Construction | Rigid Metal Tube |
| Main Function | Transfers Pressurized Diesel Fuel Through the Injector Supply Circuit |
| Application | Compatible Diesel Fuel Injection System |
| Installation | Corresponding High-Pressure Injector Fuel Line Position |
| Working Medium | Diesel Fuel |
| Engine Model | To Be Confirmed |
| Machine Model | To Be Confirmed |
| Fitment Check | Part Number / Tube Shape / Length / Bends / End Fittings / Thread or Seat / Existing Part Photo |
| Quality Type | Aftermarket Replacement |
| Condition | New |
| Brand | YNF |
| Origin | China |
| MOQ | 1 Piece |
| Shipping Method | Air, Sea, Express |
| Payment Terms | T/T, PayPal, Western Union |
| Application | Description |
|---|---|
| Diesel Injection System | Transfers pressurized fuel through the corresponding injector circuit |
| Injector Supply Line | Connects matching high-pressure fuel-system components |
| Engine Fuel Repair | Suitable when the original rigid pipe becomes damaged or leaking |
| Injector Replacement | Can be inspected when injectors are removed or renewed |
| Engine Overhaul | Suitable for fuel-line inspection during major rebuilding |
| Fuel Leak Repair | Used when sealing or tube damage is identified |
| Diesel Workshop | Suitable for professional fuel-system servicing |
| B2B Parts Stocking | Practical for engine parts dealers, wholesalers, and rebuilders |
Q: Is this a flexible fuel hose?
A: No. It is identified as a rigid high-pressure metal fuel tube.
Q: What does the tube do?
A: It transfers pressurized diesel fuel through the corresponding injector supply circuit.
Q: Is a specific engine model confirmed?
A: No. The exact engine and machine application should be confirmed before ordering.
YNF Machinery supplies 3964144 injector fuel supply tubes and related diesel fuel-injection components for engine rebuilders, machinery workshops, dealers, wholesalers, and international importers.
The YNF19078 high-pressure fuel tube is a fitment-sensitive rigid component. For professional B2B buyers, the part number should be checked together with tube bends, overall length, end-fitting orientation, sealing-seat design, and connection details before quantity purchasing.
Buyers can provide the 3964144 reference number, machine or engine model, required quantity, tube measurements, connection photos, fitting details, and clear images of the removed pipe for fitment confirmation.
Injectors, injector nozzles, fuel pumps, common rail components, fuel filters, return lines, sealing washers, and other diesel fuel-system parts can also be consolidated into the same inquiry to simplify sourcing and reduce fragmented international shipping costs.
