Description
Overview:
This braided leak off pipe is a flexible fuel hose for low-pressure circuits on vehicles, plant, and garden machinery. It has a 3.5 mm inner (inward) diameter and is supplied in a 5 m length, ready to cut to size for multiple connections. The cotton overbraided outer adds protection and flexibility for routing around tight bends and through busy engine bays. Suitable for diesel, petrol, and oil, it is commonly used on injector leak-off/return lines, spill rails, and pump return connections on construction equipment, generators, small tractors, and mowers. Built to DIN SPEC 73379 Type B 1983, and rated to 150 psi (10 bar), it offers dependable performance for maintenance and repairs. Manufacturer part number: 200 438.
Key Features:
- 3.5 mm inner diameter for common injector and spill rail fittings
- Supplied as a 5 m length; can be cut cleanly to the required size
- Cotton overbraided outer improves flexibility and abrasion resistance
- Suitable for diesel, petrol (gasoline), and lubricating oil systems
- Rated working pressure: 150 psi (10 bar) for low-pressure fuel circuits
- Complies with DIN SPEC 73379 Type B 1983 for fuel hose performance
- Smooth routing around tight bends; resists kinking under gentle curves
- Compatible with barbed tails; secure with appropriate hose clips if required
- Helps maintain stable fuel return flow from injectors and pumps
- Resistant to common workshop handling and light scuffing
- Consistent internal bore for reliable flow and easy push-fit installation
- Manufacturer part number: 200 438
Typical Applications:
Used as a leak-off/return line from diesel injectors, pump spill returns, and low-pressure transfer lines on cars, vans, compact construction equipment, generators, small tractors, and garden machinery. Suitable for service, refurbishment, and hose replacement during routine maintenance where a 3.5 mm ID fuel hose is specified.
Also known as:
Fuel return hose, return line, spill rail hose, injector leak-back hose, fuel return pipe, spill return pipe, overflow hose, injector return line.
Product Specifications
| L&S Part No. | 200 438 |
|---|---|
| Unit of Sale | 1 |
| Key Features | - 3.5 mm inner diameter for injector and spill rail fittings - Supplied in 5 m length, cut to size - Cotton overbraided outer for flexibility and abrasion resistance - Suitable for diesel, petrol, and oil systems - Rated to 150 psi (10 bar) for low-pressure circuits |


