Description
Hydraulic Pump for Electric Convertible Roof for Peugeot 307 CC.
Reliable hydraulic pump designed for the electric folding roof system of the Peugeot 307 CC. This unit restores hydraulic pressure to the roof actuators, allowing smooth and controlled opening and closing of the hard/soft top. Ideal for professional garages and DIY mechanics who need an OE-replacement part identified by product code 8446S4. Commonly searched by part number, this pump is a direct-fit solution when the original unit shows signs of leakage, slow operation or motor failure.
Technical Information
- Manufacturer: Stellantis / Peugeot / Citroën
- Model: Peugeot 307 CC
- Product Codes: 8446S4
- Other Numbers: NFP
Function And Benefits
The hydraulic pump supplies pressurised hydraulic fluid to the roof actuators and valves, driven by an electric motor. Its proper function ensures quiet, reliable and synchronised roof movements. Replacing a worn or leaking pump restores full system performance, prevents further damage to roof linkages and eliminates operation delays or failures that can occur in wet or cold conditions.
Installation Recommendations
Before starting any work, always disconnect the vehicle battery. Typical replacement steps: locate the pump (usually in the boot/under-boot trim), drain or capture hydraulic fluid from the system, disconnect electrical connectors and hydraulic lines (mark positions), unbolt and remove the pump assembly, fit the new pump (transfer any brackets as required), reconnect lines with new sealing rings if available, refill with manufacturer-specified hydraulic fluid and perform a careful bleeding procedure to remove air. After installation, cycle the roof several times to check for correct operation and leaks. Use proper tools and follow Peugeot service instructions for torque values and hose handling.
Why This Part Most Commonly Fails
- Seal And O-Ring Wear: Over time seals degrade, causing external or internal leaks and loss of pressure.
- Hydraulic Fluid Contamination: Dirt or moisture causes valve sticking and accelerated wear of internal components.
- Electric Motor Failure: Worn brushes or internal motor damage can stop the pump from building pressure.
- Air In The System: Introduced during repairs or from leaks, air causes spongy operation and reduced performance.
- Corrosion And Mechanical Damage: Exposure to water or impact can damage pump housing and connectors.
Symptoms Indicating Replacement
Slow or jerky roof movement, unusual whining or grinding noises from the pump area, visible hydraulic fluid leaks, roof failing to complete its cycle or warning messages related to the convertible roof—these are clear signs the pump or its seals require attention.
Notes For Professionals And DIY Mechanics
Part commonly referenced by code 8446S4 — keep this code handy when searching or ordering to ensure correct fitment. Always use the hydraulic fluid type specified by Peugeot and follow approved bleeding procedures after installation. If uncertain about electrical diagnosis or complex bleeding, consult workshop documentation or a qualified technician.
Replace your failing convertible roof pump with a correct-fit unit to restore reliable roof operation and prevent further hydraulic system damage.
