This engine cover is designed for 1.6 HDi diesel engines and provides reliable protection for the top of the engine while improving under-hood appearance and reducing noise. Ideal for professional mechanics and DIY enthusiasts, the part is commonly searched by its product numbers and fits a range of Peugeot models with 1.6 HDi engines. Replacing a damaged or missing engine cover restores proper protection of wiring, fuel lines and other vulnerable components and helps maintain tidy engine bay routing during repairs and inspections.

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: 1.6 HDi (55 kW, 66 kW, 80 kW)
• Product Codes: 9659999880, 0137E5
• Other Numbers: 13700000
• Compatible Vehicles: Peugeot 207, 307, 308, 407, Partner (vehicles equipped with 1.6 HDi engines)

Function and Benefits

The engine cover protects the upper engine area from dirt, debris and accidental contact with hot components. It also contributes to noise damping and keeps hoses and wiring secured and routed away from moving parts. A correctly fitted cover prevents premature wear of peripheral components and improves the visual presentation of the engine bay during service.

Recommended Installation

Installation is straightforward for a trained mechanic or competent DIYer. Typical steps:

• Allow the engine to cool. Remove the old cover by undoing visible bolts, screws or plastic clips.
• Inspect mounting points, rubber grommets and clips; replace any damaged fasteners before fitting the new cover.
• Place the new cover into position, ensuring alignment of locating pins and grommets, then secure with the original fasteners. Do not overtighten plastic fixings.
• After installation, check for any contact with hoses or wiring and confirm there are no new rattles during a short test drive.

Common Failure Reasons

Engine covers typically fail due to impact damage (stone chips, collisions), heat ageing and embrittlement of plastic, or from broken mounting tabs and rubber grommets. Oil leaks or coolant leaks under the cover accelerate degradation and can cause warping or staining. Loose or missing fasteners often lead to vibration and noise, which is a frequent reason owners replace the cover.

This part is frequently searched by its product numbers (9659999880, 0137E5). If the cover shows cracks, deformed mounting points or significant discoloration from heat and fluids, replacement is recommended to preserve engine bay protection and reduce noise.

This high-quality engine cover is designed for 1.6 16V HDi engines (55, 66, 80 kW) used across Citroën and Peugeot models. It protects the top of the engine from dirt and debris, improves under-bonnet appearance and can reduce noise. The cover is a direct-fit replacement for original equipment part numbers commonly referenced by mechanics and DIY enthusiasts, making it easy to locate and order by code.

Fitment And Compatible Vehicles

Fits 1.6 HDi 16V engines (55 / 66 / 80 kW) in the following vehicle families (ensure engine specification matches):

• Citroën Berlingo
• Citroën C4
• Citroën C4 Picasso
• Citroën C5
• Citroën Xsara Picasso
• Peugeot 207
• Peugeot 307
• Peugeot 407
• Peugeot Partner

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Engine Cover For 1.6 16V HDi Engines (55, 66, 80 kW)
• Product Codes: 9659999880, 9684889380, 9684889480, 0137E5
• Additional Numbers: 968489480, 13700000

How The Part Is Replaced

• Allow Engine To Cool Before Work; Hot Components Can Cause Burns.
• Remove Any Fasteners: Typically Plastic Clips, Push Rivets Or A Few Bolts Securing The Cover.
• Carefully Lift The Cover Off The Engine, Paying Attention To Rubber Mounts And Grommets.
• Inspect Mounting Points, Clips And Surrounding Components For Damage Or Oil Contamination.
• Fit The Replacement Cover, Ensuring Rubber Mounts Are Seated Correctly And Fasteners Are Replaced Or Reused Where Intact.

Installation Recommendations

• Perform Installation On A Cool Engine And Work On A Level Surface.
• Replace Any Broken Clips Or Worn Rubber Mounts To Avoid Vibration And Rattling.
• Clean Surrounding Areas Before Reassembly—Oil Or Dirt On Mounts Accelerates Wear.
• Use OEM-Equivalent Fasteners Where Possible; Do Not Over-Tighten Plastic Clips Or Bolts.
• Check For Underlying Issues (Oil Leaks, Loose Hoses) That May Have Caused Cover Deterioration.

Why The Part Most Commonly Fails

The engine cover is a non-structural plastic component but is exposed to heat cycles, oil contamination and mechanical stress. Common failure modes include:

• Cracked Or Brittle Plastic Caused By Long-Term Heat Exposure And Age.
• Damaged Or Missing Mounting Grommets And Clips Resulting From Vibration And Repeated Removal.
• Degradation From Engine Oil Leaks Or Chemical Exposure That Swells Or Weakens The Material.
• Impact Damage From Road Debris Or Improper Handling During Maintenance.

Practical Tips For Mechanics And DIYers

• When Ordering, Use The Product Code(s) 9659999880 / 9684889380 / 9684889480 / 0137E5 To Ensure Fast Identification.
• Inspect Clips And Grommets At Every Service Interval; Replacing Small Fixings Early Prevents Larger Damage.
• Keep A Small Stock Of Common Fasteners And Rubber Mounts In The Workshop To Speed Repairs.
• If The Cover Shows Evidence Of Oil Contamination, Find And Repair The Leak Source To Prevent Repeat Failures.

By choosing the correct engine cover and following proper installation steps, you restore the engine bay’s appearance while preventing noise and protecting critical components from debris. Ideal for professional garages and competent DIY technicians who require a reliable, direct-fit replacement for 1.6 HDi engines.

This engine cover is designed for 1.6 16V HDi diesel engines (55, 66 and 80 kW) used across a wide range of Citroën and Peugeot models. Manufactured to match the original fit and mounting points, it protects top engine components from dirt, reduces perceived engine noise and helps manage under-hood airflow. Ideal for professional garages and DIY enthusiasts who search by part number (e.g. 9659999880, 9684889380, 9684889480, 0137E5), this cover restores the vehicle’s factory appearance while maintaining practical protection.

Key Benefits

• Direct fit for factory mounting points — simplifies replacement and ensures correct clearance for hoses and sensors.
• Protects intake components, wiring and fuel lines from debris and moisture.
• Contributes to engine bay acoustics by dampening high-frequency noise from the valve cover area.
• OEM-style design retains correct airflow and heat dispersion around the engine top.
• Part-number searchable for fast identification in workshop catalogs: 9659999880 / 9684889380 / 9684889480 / 0137E5.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Citroën Berlingo; Citroën C3; Citroën C3 Picasso; Citroën C4; Citroën C4 Picasso; Citroën C5; Citroën Xsara Picasso; Peugeot 206; Peugeot 207; Peugeot 307; Peugeot 308; Peugeot 407
• Product Codes: 9659999880, 9684889380, 9684889480, 0137E5
• Other Numbers: 13700000

Fitment And Replacement

Replacing the engine cover is straightforward for a trained mechanic or competent DIYer. Typical steps:

• Allow the engine to cool. Remove any cosmetic clips or plastic fasteners securing the cover (common are push clips and a few bolts).
• Disconnect any attached components or sensor retainers that clip to the cover — take care not to pull on wires.
• Lift the cover clear of the engine, noting the orientation and position of mounting points for correct reinstallation.
• Clean the mounting area of dirt and oil before fitting the new cover. Replace any damaged clips or fasteners to ensure a secure fit.
• Refit in reverse order, ensuring all fasteners are snug and that hoses or wiring are not pinched.

Installation Recommendations

• Use new clips or bolts if original fasteners are brittle or damaged — plastic clips often fail with age.
• Inspect adjacent components (hoses, wiring harnesses, breather lines) while the cover is removed and replace or secure any worn parts.
• Ensure correct seating around oil filler cap and breather connections to avoid rattles or leaks.
• Work on a cooled engine and keep a clean workspace to prevent debris falling into the intake area.

Why This Part Fails Most Often

Engine covers are plastic components exposed to heat cycles, oil vapors and vibration. The most common failure modes are:

• Brittle or broken plastic clips and mounting tabs due to age and heat exposure.
• Cracks or deformation from impact or from overtightening nearby components.
• Surface damage and oil contamination that reduce aesthetic appearance and can hide other maintenance issues.

Replacing the cover and worn fasteners restores proper fitment and prevents further damage to hoses or wiring routed beneath the cover.