Product Overview

This complete engine wiring harness is designed for Citroën and Peugeot cars equipped with the 1.6 HDi engine. The harness routes power and signal circuits between the engine sensors, actuators and control units, ensuring reliable communication for fuel injection, emissions control and engine management. Commonly searched by OEM numbers, this part is ideal for mechanics and DIY enthusiasts looking for an exact-fit wiring solution for models that share the 1.6 HDi 66 kW platform.

Function And Application

The wiring harness carries electrical power and data signals to components such as injectors, sensors (temperature, pressure, crankshaft/camshaft), turbo actuators and various engine actuators. It also contains ground connections and fused feeds for engine peripherals. Correct connector seating, intact pins and protected cabling are essential for stable engine performance and fault-free diagnostics.

Installation Recommendations

• Disconnect The Battery Before Starting Work To Prevent Short Circuits And Damage.
• Document Or Label Each Connector On The Old Harness To Ensure Correct Reconnection.
• Remove The Old Harness By Releasing Clips And Fasteners; Pay Attention To Routing Through Bulkheads And Brackets.
• Fit The New Harness Following The Original Routing, Secure All Clips And Fasteners, And Ensure No Contact With Hot Or Moving Parts.
• Check Connector Pins For Corrosion Or Bent Contacts Before Reconnection; Apply Dielectric Grease Where Appropriate.
• After Reinstallation, Verify All Electrical Systems And Perform A Full Engine Start-Up Check For Fault Codes And Proper Operation.

Why This Part Fails Most Often

• Mechanical Damage From Abrasion Or Chafing Against Bodywork Or Engine Components.
• Heat And Oil Exposure Causing Insulation Degradation And Broken Wires.
• Connector Corrosion Or Water Ingress Leading To Intermittent Contacts And Fault Codes.
• Rodent Damage Chewing Wiring Sleeves And Conductors.
• Previous Improper Repairs Or Poor Routing That Stress Connectors And Mounting Points.

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Peugeot 308; Compatible With Citroën And Peugeot Vehicles Equipped With The 1.6 HDi 66 kW Engine
• Product Codes: 9687138480, 9687238280, 9687150780
• Additional Numbers: 6569XY

Why Choose This Harness

For workshops and DIY mechanics, choosing a correctly coded and routed engine wiring harness reduces diagnostic time and restores reliable engine control. This harness is suitable where the listed OEM numbers match the vehicle requirement, and it supports proper sensor and actuator operation necessary for smooth running and emissions compliance.