Description
Vacuum reservoir 1.6 HDi for Citroën, Peugeot, Ford, Volvo vehicles
This vacuum reservoir (vacuum accumulator) is designed for 1.6 HDi engines and provides a reliable source of vacuum for brake servos and other vacuum-operated actuators. Ideal for professional mechanics and DIY enthusiasts, this replacement part matches common OEM references 9649508680 and 037007 and is suitable for multiple Citroën and Peugeot applications. Clear, precise fitment information and installation tips below help you find the right part quickly and complete the repair with confidence.
Why fit a new vacuum reservoir? A healthy reservoir ensures consistent brake-assist performance and stabilizes vacuum supply to systems such as the brake booster and vacuum-actuated controls. Replacing a failing unit restores pedal feel, prevents hard braking situations, and eliminates vacuum-related drivability issues.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: 1.6 HDi (vacuum reservoir / vacuum accumulator)
- Product Codes: 9649508680, 037007
- Other Numbers: Commonly referenced on Stellantis 1.6 HDi engine families and compatible service catalogs
Compatible Models (examples): Citroën Berlingo, Citroën C3, Citroën C3 Picasso, Citroën C4, Citroën C4 Picasso, Citroën C5, Citroën C5 X7, Peugeot 206, Peugeot 207, Peugeot 307, Peugeot 308, Peugeot 407, Peugeot Partner. Some Ford and Volvo models using the same 1.6 HDi engine family may also use similar vacuum reservoir units—always check part numbers for exact match.
Installation Recommendations
- Prepare: Park on level ground, allow the engine to cool and, if desired, disconnect the negative battery terminal for safety when working near electrical components.
- Access: Locate the vacuum reservoir in the engine bay (usually secured to the body or inner wing and connected to the brake booster and vacuum hoses).
- Remove Old Unit: Carefully note hose routing, then remove vacuum hoses and any electrical connectors. Unbolt the mounting fasteners and extract the old reservoir. Inspect vacuum hoses and check valve for wear.
- Fit New Unit: Position the new reservoir, secure mounting bolts to a snug fit (avoid overtightening), and reconnect hoses ensuring tight, leak-free connections with new clamps if necessary.
- Verify: Start the engine, observe for vacuum leaks and proper brake pedal assist. Recheck hose clamps and mounting after a short test drive.
- Tools and Consumables: Basic hand tools, pliers for hose clamps, and replacement hose clamps or vacuum hose as required.
Common Reasons For Failure
- Plastic Degradation: Prolonged exposure to engine heat and vibration can make the reservoir brittle and cause cracks or fractures, leading to vacuum leaks.
- Check Valve Failure: Internal one-way valve can stick or fail, preventing the reservoir from retaining vacuum and causing poor brake-assist performance.
- Hose Deterioration: Connected vacuum hoses can become porous, split, or detach at connection points, producing intermittent vacuum loss.
- Contamination: Oil vapors, soot, or debris entering the vacuum circuit can clog ports or damage internal components over time.
Signs of a failing vacuum reservoir include a hard brake pedal, delayed brake response, irregular idling under load, or audible hissing from the engine bay. When replacing the reservoir, inspect and, if needed, replace associated vacuum hoses and the check valve to ensure a long-lasting repair.
This part is an exact-fit replacement when the product codes match. Use the listed product codes (9649508680, 037007) as primary search terms when ordering to improve the chance of finding the correct unit quickly.
