This Bosch vacuum pump is designed for the 1.6 HDi 16V diesel engines used in a range of Citroën and Peugeot models. The pump supplies the necessary vacuum for the brake servo and other vacuum-operated components, restoring correct brake assistance and reliable operation of vacuum-controlled actuators. Technically robust and direct-fit for many PSA applications, the unit is often identified and ordered by its product codes—searching by part number is a common and efficient way to confirm compatibility.

Key Benefits

– Restores Full Brake Booster Assist: Ensures a firm, responsive brake pedal and safe braking performance.
– Direct Fit For Many 1.6 HDi Applications: Designed to match OEM mounting points and vacuum connections.
– Quality Bosch Manufacturing: Durable construction aimed at long service life when installed correctly.

Technical Information

• Manufacturer: Bosch
• Model: Vehicles With 1.6 HDi 16V Engines (Citroën And Peugeot) — e.g. Citroën C3, C4, Berlingo; Peugeot 207, 307, Partner
• Product Codes: 9653898080, 965390680
• Other Numbers: 456570, 96417772

Function And Typical Symptoms Of Failure

The vacuum pump generates the vacuum required by the brake servo and additional vacuum-operated systems. When the pump degrades or leaks, drivers may notice a harder or spongy brake pedal, reduced brake assist, longer stopping distances, or vacuum-related error codes. External oil leakage around the pump or vacuum hoses, and audible whine from the pump area at idle, are common indicators of wear or seal failure.

Common Causes Of Failure

– Internal Seal Or Shaft Wear Resulting In Loss Of Vacuum
– Oil Contamination Or Carbon Build-Up Affecting Internal Components
– Mechanical Wear From High Mileage Or Insufficient Maintenance
– Damaged Vacuum Hoses Or Check Valves Leading To Overload Of The Pump

Installation Recommendations

– Disconnect The Battery Before Starting Work To Prevent Electrical Damage.
– Remove Any Intake Or Engine Covers Necessary To Access The Pump; Disconnect Vacuum Hoses And Oil Feed/Return Lines Carefully.
– Replace Gaskets/Seals And Any Worn Hoses During Installation To Prevent Immediate Re-Failure.
– Tighten Mounting Bolts To Manufacturer Torque Specifications And Reconnect Vacuum Hoses Securely.
– After Installation, Verify Vacuum Supply To The Brake Servo And Check For Leaks With Engine Running.
– If Uncertain, Have Final Checks Performed With Proper Diagnostic Tools; Ensure No Related Fault Codes Remain.

Why Mechanics And DIYers Choose This Part

Part numbers listed above match common PSA references, making this pump straightforward to order and fit for routine engine repairs. Replacement restores brake feel and vehicle safety quickly, and replacing worn vacuum components along with the pump reduces the chance of repeat failures.

Notes On Identification

This pump is commonly searched for by its product codes 9653898080, 965390680, 456570, and 96417772. Confirm fitment for your vehicle by matching the part number to the unit being replaced or to repair documentation for the 1.6 HDi 16V engine.

This vacuum reservoir (stock number 1622T0) is a direct-fit replacement part designed for Peugeot and compatible Citroën models equipped with the 2.0i 16V 130 kW engine. Ideal for professional workshops and DIY mechanics, the reservoir restores stable vacuum supply for the brake booster and other vacuum-operated systems, helping to maintain safe and consistent brake feel as well as reliable engine vacuum control. Keep this part in mind when diagnosing weak or intermittent brake assist, hissing noises under the bonnet, or visible damage to the original reservoir.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Peugeot 307; Vehicles With 2.0i 16V 130 kW Engine
• Product Codes: 1622T0
• Additional Numbers: None Listed

Features And Benefits

Designed to provide a steady vacuum reserve for the brake servo, this reservoir ensures consistent brake assist even under variable engine load. Robust plastic construction resists typical underbonnet heat and vibration, and the standardized port layout allows easy connection to existing vacuum lines and one-way check valves. Keeping the vacuum system healthy improves driver confidence and contributes to overall vehicle safety.

Recommended Installation

Replacement is straightforward for a trained mechanic or competent DIYer. Typical steps include: safely raising the vehicle if required for access, relieving residual vacuum by starting the engine and then switching it off, disconnecting vacuum hoses and electrical connectors if present, removing the mounting fasteners, and installing the new reservoir in the original position. Always inspect and, if necessary, replace vacuum hoses, clips, and the check valve during installation to prevent repeat failures. Ensure secure hose clamps and correct routing to avoid chafing or heat damage. No special tools are normally required beyond basic hand tools.

Why The Part Fails Most Often

Vacuum reservoirs usually fail due to age-related degradation: plastic becomes brittle from heat cycling and exposure, leading to cracks or hairline fractures. Failures can also result from damaged vacuum hoses or a faulty check valve that allows backflow, reducing available vacuum. External impacts and mounting stresses accelerate wear. Symptoms of a failing reservoir include a hard or inconsistent brake pedal, reduced vacuum assistance at idle or during load changes, and audible hissing from the engine bay.

Notes For Buyers

Searchable by part number 1622T0—use this code when looking up fitment or ordering. Suitable for professional fitment in service garages as well as competent home mechanics performing scheduled maintenance or repairs. Inspect related vacuum components at the same time to ensure a durable repair.

This vacuum reservoir (part numbers 9649508680 / 037007) is a direct-fit replacement designed for diesel 1.6 HDi applications. It restores reliable vacuum supply for brake assist and various vacuum-operated actuators, reducing hard brake pedal feel and intermittent failures of engine-control vacuum systems. Ideal for professional workshops and DIY mechanics who search by part number (9649508680, 037007, 37007) to find the correct component quickly.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot OE)
• Model: Citroën Berlingo, Citroën C3, Citroën C3 Picasso, Citroën C4, Citroën C4 Picasso, Citroën C5, Citroën C5 (X7), Citroën Xsara Picasso, Peugeot 206, Peugeot 207, Peugeot 307, Peugeot 308, Peugeot 407, Peugeot Partner
• Product Codes: 9649508680, 037007
• Additional Numbers: 37007

Function And Application

The vacuum reservoir stores negative pressure generated by the engine vacuum pump (or electric vacuum pump on some diesel variants) and provides a stable vacuum source to the brake servo and other vacuum-operated devices (EGR control, vacuum solenoids, HVAC actuators). By buffering vacuum fluctuations it ensures consistent brake-assist performance even under high engine load or when the vacuum pump output varies.

Common Failure Modes

• Cracked Or Brittle Plastic Housing Causing Vacuum Loss.
• Leaking Hoses Or Damaged Check Valve Leading To Slow Or No Vacuum Build-Up.
• Contamination From Oil Or Debris Causing Internal Valve Or Seal Damage.
• Failure Secondary To Vacuum Pump Faults — A Failing Pump Can Overstress The Reservoir And Connections.

Replacement Frequency

There Is No Fixed Service Interval; Failure Is Typically Age Or Damage Related. In Practice, Reservoirs May Last Many Years, But Exposure To Heat, Engine Bay Contaminants And Mechanical Damage Can Require Replacement After Roughly 8–15 Years Or Following Notable Vacuum-Related Symptoms.

Installation Recommendations

• Work In A Well-Ventilated Area With The Engine Off And The Vehicle Securely Parked.
• Inspect All Vacuum Hoses, Clamps And The Check Valve; Replace Any Aged Or Brittle Components At The Same Time To Prevent Recurrence.
• Disconnect Only The Minimal Electrical Connectors Required For Safe Access; Follow Manufacturer Procedures For Components Located Near Airbags Or Sensitive Electronics.
• After Fitting, Start The Engine And Run Until The Vacuum Pump Fills The Reservoir. Check For Leaks Around Hose Connections And The Reservoir Body While Pressurizing/Depressurizing The System.
• Confirm Brake Pedal Feel And Any Related Fault Codes Are Cleared After Replacement.

Why This Part Fails Most Often

The Most Common Cause Of Failure Is Material Degradation—plastic And Rubber Components Become Brittle Over Time From Heat Cycles, Oil Vapors And Road Contaminants. Mechanical Impact Or Poorly Secured Hoses Can Also Cause Cracks Or Abrasions, Leading To Vacuum Leaks. Additionally, A Faulty Vacuum Pump Or Blocked Lines Can Overload The Reservoir Or Introduce Contaminants That Reduce Service Life.

This vacuum reservoir is compatible with multiple Citroën and Peugeot models, commonly referenced by the part numbers 9638394877 and 162772.

Replacing the vacuum reservoir is straightforward and often recommended when you notice a loss of braking efficiency or if vacuum-related issues arise. Regular inspection and replacement can prevent further mechanical issues related to insufficient vacuum supply.

Understanding the failure of this component is crucial; it typically occurs due to wear over time or exposure to harsh under-hood conditions, leading to cracks or leaks that compromise vacuum integrity.

Technical Information

• Manufacturer: Citroën Peugeot
• Model: 2.0 HDI, 2.2 HDI
• Product Codes: 9638394877, 162772
• Additional Numbers: Not available

This used vacuum reservoir (vacuum accumulator) is a direct-fit replacement commonly found on PSA 2.0 HDi powertrains. It stores vacuum produced by the engine or vacuum pump to ensure stable operation of the brake servo and other vacuum-controlled actuators during transient engine conditions. The part is often searched by its reference numbers 9646411180 and 161837 — include these codes when looking up compatibility or spares.

Key Benefits

Reliable vacuum supply for brake booster and ancillary vacuum consumers; restores consistent pedal feel in vehicles with intermittent vacuum loss. Suitable for professional workshops and experienced DIY mechanics performing targeted brake-system or intake-service repairs.

Fitment & Compatibility

Fits a range of Citroën and Peugeot models equipped with the 2.0 HDi engine. Often compatible with some Ford and Volvo vehicles that share PSA 2.0 HDi units. Typical applications include:

• Citroën C4
• Citroën C4 Picasso
• Citroën C5 (including X7)
• Citroën C8
• Peugeot 307
• Peugeot 407
• Peugeot 807
• Certain Ford and Volvo models with PSA 2.0 HDi engines

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Vehicles With 2.0 HDi Engine (See Fitment List)
• Product Codes: 9646411180, 161837
• Other Numbers: 161837, 9646411180

Function And Symptoms Of Failure

The vacuum reservoir smooths out vacuum supply variations, guaranteeing that the brake servo and other vacuum-driven components have reserve vacuum when the engine vacuum is low (for example during heavy load or turbo boost). Common symptoms of a failing reservoir include a hard brake pedal after engine start, intermittent brake-assist loss under boost, hissing noises in the engine bay, and visible cracks or vacuum leaks at the reservoir or its hose connections.

Typical Causes Of Failure

• Aging And Material Fatigue: Plastic tanks can become brittle and crack with age and heat cycling.
• External Damage: Impact or abrasion from engine-bay components or debris.
• Failed One-Way Valve Or Hose Connections: Leaks at the check valve or deteriorated vacuum hoses reduce stored vacuum.
• Contamination: Oil or soot ingress that accelerates seal and hose degradation.

Installation Recommendations

Recommended for qualified mechanics or experienced DIYers. Before starting, work with the engine cold and the ignition off. Basic replacement steps:

• Locate The Reservoir (usually near the firewall or intake manifold) and Inspect Surroundings.
• Relieve Residual Vacuum By Operating The Brake Pedal Several Times With The Engine Off.
• Carefully Remove Vacuum Hoses And The Check Valve, Noting Their Routing And Orientation.
• Unbolt The Reservoir From Its Bracket And Replace With The New Unit, Ensuring Correct Hose Fit And Tight Clamps.
• After Installation, Start The Engine And Check For Leaks. Verify Brake-Assist Operation At Idle And Under Load.

Use OE-quality vacuum hoses and clamps when replacing connections. Test the system for leaks with a hand-held vacuum pump or smoke tester if available.

Why Replace This Part

Replacing a cracked or leaking vacuum reservoir restores reliable brake-assist and prevents intermittent drivability or safety issues caused by loss of vacuum. Because the reservoir is a passive component, fitting a correct reference-number part (9646411180 / 161837) ensures proper fit and volume for the original brake servo characteristics.

Search By Part Number: 9646411180, 161837 — use these references to quickly find matching units and confirm fitment for your model.

This critical engine component is crucial for proper functionality and can significantly affect your vehicle’s overall performance. Its main function is to regulate the vacuum needed for the correct operation of various vehicle systems, including the braking system and turbo regulation. In the event of failure, a range of engine problems can occur, making it an important part when diagnosing performance issues.

Technical Information:

• Manufacturer: PSA Citroën Peugeot
• Model: Citroën Berlingo III, Citroën C4 II, Peugeot 301, Peugeot 308 T9
• Product Codes: 9807593380, 9822341180
• Other Numbers: Suitable for versions 1.2 81 KW

This part is vital for countless vehicles and its replacement is relatively straightforward; however, we recommend that it be performed by a professional to ensure that everything is properly set and calibrated. With correct installation and maintenance, the Vacuum Reservoir is a component that has a long lifespan and can significantly contribute to the overall efficiency and safety of your vehicle.

Don’t waste time searching for alternative stores – our used parts are carefully tested to ensure maximum quality and reliability for your car. Invest in this Vacuum Reservoir and ensure your Citroën or Peugeot vehicle remains in top condition.

The offered Vacuum Pipe has been carefully selected to ensure its seamless operation in your car. Whether you are a professional mechanic or enjoy repairing your car yourself, this part is the right choice for you, thanks to its high durability and longevity. It is primarily suitable for models such as CITROEN BERLINGO III, Citroen C4 II, Peugeot 301, and Peugeot 308 T9.

Technical Information:

• Manufacturer: CITROEN PEUGEOT
• Model: CITROEN BERLINGO III, Citroen C4 II, Peugeot 301, Peugeot 308 T9
• Product Codes: 9804306280
• Other Numbers: N/A

The Vacuum Pipe is a key component for the proper functioning of the engine system, as it ensures effective and accurate vacuum routing, which directly affects engine performance. Proper installation and maintenance of this part are essential for maintaining optimal performance of your vehicle.

Don’t miss the opportunity to acquire this important auto part. Order it today and ensure that your vehicle continues to operate like new. With our Vacuum Pipe, you gain not just a replacement part, but a great investment in the future of your automobile.

Product Overview

This combined vacuum reservoir and oil vapor separator (often referenced under part numbers 9653275280 and 1180Q) is designed for the 2.2 HDi diesel engines used in various Citroën and Peugeot models. It stores vacuum for the brake booster and other vacuum-operated systems while separating oil vapors from the crankcase ventilation stream to protect the intake system and turbocharger. The unit improves vacuum stability under load and prevents oil contamination of the intake manifold.

Fitment And Compatibility

Commonly fitted to vehicles with the 2.2 HDi 125 kW engine, including but not limited to:
Citroën C5 (X7), Citroën C6, Citroën C8, Peugeot 407, Peugeot 607, Peugeot 807. The part is frequently searched for by its product codes 9653275280 and 1180Q.

Function And Symptoms Of Failure

Function: The unit serves two main roles — acting as a vacuum accumulator to ensure steady vacuum supply for the brake servo and other actuators, and functioning as an oil vapor separator (PCV cooler) to capture oil droplets and return them to the sump or prevent them from entering the intake.

Symptoms Of Failure: Loss of vacuum (harder brake pedal or delayed brake assist), oil smell from the intake, increased oil consumption, smoke from the exhaust, rough idle or turbocharger contamination. Clogged separator passages can increase crankcase pressure and lead to oil leaks or turbo contamination.

Replacement Procedure (Practical Guide)

Replacement is straightforward for experienced technicians and mechanically minded DIYers. Typical steps:

• Allow the engine to cool and park on a level surface.
• Locate the unit in the engine bay and identify all vacuum hoses and PCV lines connected to it.
• Release and mark hoses and vacuum lines to ensure correct reassembly; remove retaining clips and electrical connectors if present.
• Unbolt the reservoir from its mounting bracket and remove the unit.
• Install the new reservoir, ensuring the check valve orientation and hose routing match the original setup. Replace any brittle hoses or worn clamps.
• Reattach all lines and secure mounting bolts to the manufacturer’s torque settings where available. Start the engine and verify vacuum integrity and absence of leaks.

Note: Replace any vacuum hoses and clamps that appear hardened, cracked, or oil-soaked to prevent premature failure of the new unit.

Technical Information

• Manufacturer: Stellantis
• Model: Citroën C5 (X7), Citroën C6, Citroën C8, Peugeot 407, Peugeot 607, Peugeot 807
• Product Codes: 9653275280
• Other Numbers: 1180Q

Mounting Recommendations

When installing this unit, ensure all vacuum and PCV hoses are new or in good condition and routed exactly as the original. Secure hose clamps to prevent vacuum leaks. Pay attention to the check valve orientation — incorrect installation will prevent proper vacuum supply. After installation, run the engine and test brake assist feel and vacuum stability under varying engine speeds. If the vehicle is equipped with an electric vacuum pump, verify pump operation and hose connections.

Why This Part Commonly Fails

Typical causes of failure include long-term oil contamination, soot buildup, heat ageing and physical cracks from vibration or impact. Oil-laden blow-by will clog separator media over time, reducing separation efficiency and causing increased crankcase pressure. Rubber hoses and internal valves may harden or stick, leading to vacuum loss. Addressing the root cause (excessive blow-by, worn turbo seals, or blocked crankcase return) helps prevent repeat failures.

Notes For Buyers

This unit is a direct-replacement wear part for the listed HDi engines. Because many technicians and DIYers search by part number, the codes 9653275280 and 1180Q are included here for easier identification.

This vacuum reservoir, commonly referenced under part numbers 9635576177 and 162779, is a direct-fit replacement designed for Stellantis diesel applications. It restores reliable vacuum supply for the brake servo and related vacuum-operated actuators, helping to recover correct brake assist and pedal feel. The part is suitable for professional workshops as well as experienced DIYers looking for a straightforward swap using standard tools. Including the correct reservoir in repairs reduces the risk of fluctuating brake assistance and intermittent faults related to insufficient vacuum.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C3; Citroën C5; Citroën C5 X7; Peugeot 1007; Peugeot 307; Peugeot 607 — For 1.4 HDi, 2.0 HDi and 2.2 HDi engines
• Product Codes: 9635576177
• Additional Numbers: 162779

Installation Recommendations

• Park the vehicle on a level surface, switch off the engine and allow it to cool. Work with the ignition off when disconnecting vacuum lines.
• Locate the reservoir in the engine bay (typically near the brake servo or firewall). Note hose routing and the orientation of the check valve before removal.
• Disconnect vacuum hoses and electrical connectors (if present). Remove mounting bolts or clips and fit the replacement in the original position.
• Ensure the check valve is fitted with correct flow direction (arrow toward the vacuum source). Replace any brittle hoses or clamps with new ones to ensure an airtight connection.
• After installation, verify the system with a handheld vacuum pump or gauge: the reservoir should hold vacuum and the brake pedal should return to normal assist behavior. Re-check for audible leaks (hissing) and secure all fastenings.

Most Common Failure Causes

• Plastic fatigue and cracking from long-term heat exposure and vibration, causing vacuum leaks.
• Failure of the check valve or internal seals, which prevents the reservoir from holding vacuum.
• Degraded or split vacuum hoses and loose clamps allowing air ingress.
• Related vacuum pump malfunction: if the vacuum pump is weak or fails, the reservoir will not refill properly and symptoms may appear even if the reservoir is intact.

Symptoms And When To Replace

• Hard or heavy brake pedal, especially after engine start, indicating reduced brake assist.
• Intermittent loss of brake assistance or a change in pedal travel when accelerating or under load.
• Audible hissing from the engine bay or visible cracks/damage to the reservoir body or hose connections.
• Recommended to inspect the reservoir and hoses during routine service intervals (for example around 100,000 km) or immediately if vacuum-related symptoms appear.

Choose this vacuum reservoir when you need a reliable replacement that matches original fitment for many Citroën and Peugeot HDi engines. Use the part numbers 9635576177 and 162779 when searching to ensure correct compatibility and fast identification in parts catalogs.

Commonly associated with part numbers 9801888780 and 456587, this vacuum pump is crucial for preventing loss of braking efficiency and ensuring smooth operation of various engine components. Automechanics and DIY car enthusiasts will appreciate its reliability and high performance, making it a valuable addition to their toolkit.

Regular replacement is recommended, especially in cases where the engine exhibits decreased performance or unusual noises, as vacuum pumps may deteriorate over time due to wear and tear from heat and engine vibrations.

Technical Information

• Manufacturer: Bosch
• Model: 2.0 HDI
• Product Codes: 9801888780, 456587
• Additional Numbers: Not applicable