High-quality overflow hoses designed for Citroën and Peugeot 1.4 HDI 16V engines fitted with DELPHI fuel injection systems. These hoses (part code 1579GJ) serve as reliable fuel/return lines or overflow connectors around the injection system, providing a secure route for excess fuel and pressure relief. Ideal For Professional Garages And Competent Do-It-Yourself Mechanics Searching By Part Number.

Product Description And Benefits

These replacement overflow hoses are manufactured to match the routing and connection points of original equipment on compatible vehicles. They Resist Typical Diesel Fuel Effects And Mechanical Loads, Help Maintain Correct Fuel Pressure Management And Reduce The Risk Of Leaks Around The Injection Rail. The Compact Design Simplifies Installation Without Major Disassembly Of Surrounding Components.

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Citroën C3; Peugeot 1007; Engines With 1.4 HDI 16V Delphi Injection
• Product Codes: 1579GJ
• Additional Numbers: No Additional Numbers Provided

Installation Recommendations

1. Work In A Well-Ventilated Area And Relieve Fuel System Pressure Before Beginning.
2. Disconnect The Battery To Minimize Risk Of Sparks During Work On The Fuel System.
3. Carefully Remove Any Engine Covers Or Components Blocking Access To The Affected Hoses.
4. Loosen Hose Clamps Or Quick-Connect Fittings, Then Remove Old Hoses. Note Routing And Connector Orientation For Correct Replacement.
5. Inspect Connectors, Clips And Sealing Surfaces; Clean Or Replace Any Damaged Mounting Hardware.
6. Fit The New Hose In The Same Orientation, Secure Clamps Or Connectors Firmly, But Avoid Over-Tightening That Could Damage Fittings.
7. Reconnect Battery, Prime The Fuel System If Required, Start The Engine And Check For Leaks Under Various Loads.

Typical Service Life And When To Replace

Service Life Depends On Operating Conditions But Hoses Commonly Last Several Years. Replace Immediately If You Observe Cracks, Hardened Sections, Fuel Odor, Visible Leaks Or Loose Connections. Routine Inspections During Scheduled Maintenance Help Detect Wear Early.

Why This Part Fails Most Often

• Aging And Material Degradation: Heat Cycling And Chemical Exposure Cause Rubber And Elastomers To Harden, Crack Or Swell Over Time.
• Fuel Contamination: Dirt Or Water In The Fuel Can Accelerate Wear And Lead To Internal Blockages Or Swelling.
• Mechanical Stress And Vibration: Improper Routing, Rubbing Against Other Parts Or Excessive Engine Movement Can Cause Abrasion And Leaks.
• Poor Clamps Or Connections: Broken Or Loose Clamps Allow Pressure Loss And Promote Leak Development At Fitting Points.

Search Engine Friendly Keywords: Overflow Hose, 1579GJ, 1.4 HDI 16V, Delphi Injection, Citroën C3, Peugeot 1007, Fuel Return Hose.

Replacement overflow/return hoses designed for Citroën and Peugeot HDi diesel engines. These hoses are commonly searched by OE numbers and short codes, making them ideal for professional workshops and DIY mechanics who need a direct-fit, reliable solution. They restore correct fuel routing and prevent leaks that cause fuel odor, contamination of surrounding components, or fuel pooling under the vehicle.

Compatibility And Application

Compatible With Many Stellantis Models Equipped With 1.4 HDi Or 1.6 HDi Engines. Typical Applications Include:

• Citroën Berlingo B9
• Citroën C3 Picasso
• Citroën C4 II
• Peugeot 301
• Peugeot 308
• Peugeot Partner Tepee

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: 1.4 HDI, 1.6 HDI
• Product Codes: 9676245280, 9676290580
• Additional Numbers: 1574EN, 1574JK

Installation Recommendations

Replace The Hose When The Engine Is Cool And Work In A Well-Ventilated Area. Basic Replacement Steps For Experienced Mechanics Or Competent DIYers:

• Relieve Any Residual Pressure In The Fuel System If Applicable And Protect Surrounding Components From Fuel Spillage.
• Loosen And Remove Clamps Or Fasteners At Each Connection Point.
• Note The Original Hose Routing To Ensure Correct Reinstallation; Replace With The New Hose Following The Same Path.
• Use New Clamps Or Reuse High-Quality OEM-Style Clamps; Ensure Secure, Leak-Free Connections.
• After Installation, Prime The System If Required And Check Thoroughly For Leaks During A Short Engine Run.

Why This Part Fails

Overflow Hoses Commonly Fail Due To Ageing And Exposure To Heat, Diesel Fuel, And Engine Bay Contaminants. Typical Failure Modes Include:

• Hardening And Brittleness Leading To Cracks, Especially At Bends Or Near Clamps.
• Perishing From Long-Term Exposure To Heat And Vibration.
• Damage From Corroded Or Loose Clamps Causing Abrasion Or Leaks At The Connection Points.

Signs Of Failure Include Visible Cracks, Fuel Odor, Wetness Around The Hose Or Connectors, And Fuel Drips Under The Vehicle. There Is No Fixed Replacement Interval; Inspect Hoses During Regular Service Or Whenever Fuel Odors Or Leaks Are Detected.

Why Buy This Replacement

This Hose Is A Practical, OE-Referenced Replacement For Workshops And Home Mechanics Who Need Fast Identification By Part Number. Using The Correct Hose Restores Proper Fuel Return/Overflow Function, Prevents Fuel Leaks, And Helps Maintain Safe, Clean Engine Bay Operation.

This fuel supply pipe is designed for vehicles equipped with the Delphi fuel system and the 1.4 HDi 66 kW engine. It provides a direct-fit replacement that restores secure fuel delivery and sealing between fuel system components, helping to prevent leaks and maintain proper engine performance. Ideal for professional workshops and skilled DIY mechanics who need a reliable, correctly sized fuel line for Citroën and Peugeot applications.

The component carries the common part number used in many spare-part lookups, making it quick to find when searching by code. It is intended to replace worn or damaged feed lines that can cause poor fuel flow, fuel smell in the engine bay, or starting and idle issues. Installation is straightforward for anyone familiar with diesel fuel systems, but must be carried out with care due to fuel pressure and flammability.

Technical Information

• Manufacturer: Delphi
• Model: Citroën C3; Peugeot 1007 (1.4 HDi 66 kW)
• Product Codes: 1607147180
• Additional Numbers: NFP

Installation Recommendations

Work Safely: Perform the replacement in a well-ventilated area, away from open flames or sparks. Relieve Fuel Pressure And Isolate Electrical Supply Before Starting—remove the fuel pump fuse or relay and disconnect the negative battery terminal.

Replacement Steps (Overview):

• Depressurize the fuel system according to workshop procedure (crank engine after isolating pump or follow manufacturer instructions).
• Locate the faulty feed pipe and note routing and clamp positions for correct reassembly.
• Carefully disconnect fittings—catch spilled fuel and replace any sealing O-rings or gaskets with new parts.
• Install the new pipe following the original routing, secure clamps and fittings, and torque connections to specification where applicable.
• Reconnect the fuel pump circuit, prime the system if required, start the engine and inspect for leaks at operating pressure.

Use New Seals: Always fit new O-rings/seals at each connection and lubricate them lightly with clean diesel or manufacturer-recommended lubricant to ensure a proper seal. After installation, run the engine and check for leaks before road testing.

Why This Part Fails Most Often

• Age And Material Degradation: Plastic or rubber components harden and crack over many years, especially when exposed to heat cycles under the hood.
• Corrosion And Contaminants: Metal fittings and clips can corrode; debris in the fuel can damage seals and fittings leading to leaks.
• Vibration And Mechanical Stress: Incorrect routing, missing clamps, or engine/transmission movement can fatigue the pipe or its connections.
• Improper Installation: Reusing old seals or overtightening connectors can cause leaks or damage.

Signs That The Fuel Supply Pipe Needs Replacement: Visible fuel leaks, strong diesel smell in the engine bay, difficulty starting, rough idle, or fuel pooling under the vehicle. Replacing the feed pipe and all associated seals usually resolves these symptoms when they are caused by a damaged fuel line.

This part is typically searched by its product code (1607147180). Ensure the vehicle specification matches the 1.4 HDi 66 kW Delphi system when selecting this item to guarantee correct fitment.

Overflow hoses are crucial components in maintaining optimal fuel system performance. These hoses are designed to handle excess fuel that is returned to the fuel tank, preventing overflow and ensuring efficient fuel delivery to the engine. Over time, these hoses can deteriorate due to exposure to heat and fuel, leading to leaks or blockages that can affect engine performance.

Replacing overflow hoses regularly is recommended, especially if you notice any signs of wear, leakage, or reduced engine efficiency. Proper installation is essential to ensure there are no leaks, and it’s advisable to follow manufacturer specifications during replacement.

Technical Information

• Manufacturer: PSA Citroën Peugeot
• Model: 1.4 HDI
• Product Codes: 1574Q1
• Other Numbers: Not applicable