Description
Outlet pipe for Bosch injection pump for 1.4 HDi and 1.6 HDi e-HDi engines.
This high-pressure rail outlet pipe is an OEM-style replacement for Citroën and Peugeot diesel engines equipped with Bosch injection pumps. Designed for reliable transfer of fuel from the pump to the rail, it is a direct-fit part referenced under manufacturer numbers 9804226780 and 1570Q3. Ideal for professional workshops and DIY mechanics who require a durable, service-ready fuel line that meets original equipment specifications.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Compatible with vehicles equipped with 1.4 HDi and 1.6 HDi e-HDi Bosch injection pump systems — commonly fitted to Peugeot 206, 207, 307, 308, Partner and Citroën C2, C3, C4, Berlingo (verify engine type before ordering).
- Product Codes: 9804226780, 1570Q3
- Additional Numbers: OEM Reference 9804 226 780
Features And Function
The rail outlet pipe carries high-pressure diesel from the Bosch injection pump to the common rail or intermediate connection. Manufactured from high-strength steel and precision-formed to original geometry, it is built to withstand the high pressures present in HDi common-rail systems while maintaining stable flow and leak-free joints. Proper sealing at connections (crush washers or O-rings depending on application) ensures system integrity and engine performance.
Installation Recommendations
- Depressurise The Fuel System Before Starting Work. Relieve fuel pressure following the vehicle service manual procedure.
- Disconnect The Battery Prior To Disassembly And Follow Manufacturer Safety Procedures.
- Use New Sealing Washers/Seals On Reassembly. Always replace crush washers or O-rings at the connections to prevent leaks.
- Clean Mating Surfaces And Inspect Connectors For Damage Or Corrosion Before Fitting The New Pipe.
- Hand-Start Fasteners Then Tighten To Manufacturer Torque Specifications — Do Not Overtighten. If torque values are unknown, consult the appropriate workshop manual.
- After Installation, Check For Leaks With The Engine Running Under Idle And Light Load, Then Reinspect After A Short Test Drive.
Most Common Failure Cause
High-pressure fuel pipes typically fail due to corrosion, mechanical damage from road debris or improper handling during service, and degraded sealing washers leading to leaks. Repeated vibration and thermal cycling can cause metal fatigue at bends or fittings. Incorrect installation or overtightening of connections is another frequent cause of leakage. Replace the pipe immediately if any sign of external leakage, visible cracks, or deformation is present to avoid injector or pump damage.
Why Choose This Part
Offers direct compatibility with Bosch-equipped HDi engines and OEM-referenced fitment, ensuring correct geometry and sealing. A practical choice for technicians and experienced DIYers who expect reliable, service-ready components that restore proper fuel delivery and preserve engine performance.
