Overview

High-quality Bosch ABS/ESP control module designed for Peugeot 307 models. The unit integrates the hydraulic pump and electronic control to manage Anti‑Lock Braking (ABS) and Electronic Stability Program (ESP) functions, ensuring controlled braking, improved vehicle stability and safer handling in emergency maneuvers. Supplied with a short length of wiring for easier installation.

Key Features

• Integrated ABS hydraulic pump and electronic control unit (ECU) by Bosch.
• Manages ABS and ESP functions: wheel speed monitoring, brake pressure modulation and pump activation.
• Direct fit for Peugeot 307 variants equipped with Bosch ABS/ESP systems.
• Supplied with attached wiring section to simplify connector routing and reduce installation time.

Benefits For Mechanics And DIY Enthusiasts

• OEM Bosch design ensures compatibility with vehicle braking and stability systems.
• Replacement restores ABS/ESP functionality, eliminating warning lights and degraded braking performance.
• Useful when diagnosing intermittent ABS faults — replacing the unit can be the definitive repair after sensor and wiring checks.

Technical Information

• Manufacturer: Bosch (Used On Stellantis / Citroën / Peugeot Vehicles)
• Model: Peugeot 307 (Bosch ABS/ESP Application)
• Product Codes: 9661740280, 0265950374, 0265234153
• Additional Numbers: 9649988180, 4541J3, NFP

Compatibility

Designed for Peugeot 307 models equipped with Bosch ABS/ESP modules. Confirm fitment by matching the vehicle’s ABS module part number with one of the product codes listed above.

How The Unit Functions

The ABS/ESP unit continuously monitors wheel speed sensors and modulates hydraulic pressure through solenoid valves and the integrated pump. During wheel lock or slip events the ECU rapidly adjusts pressure to individual wheels to maintain traction and vehicle stability. It also communicates with other vehicle systems (engine management, airbag, traction control) to coordinate safety responses.

Typical Replacement Procedure

• Safety First: Disconnect the negative battery terminal before any work to avoid electrical damage and airbag faults.
• Gain Access: Remove necessary trim, underbody covers or wheel arch liners to access the ABS unit depending on model layout.
• Drain/Protect: Be prepared for some brake fluid loss; protect painted surfaces from contamination.
• Electrical Disconnect: Unplug connectors and remove any retaining clips. Inspect connector pins and wiring for corrosion or damage.
• Hydraulic Lines: Carefully loosen and cap brake lines to avoid contamination; note the location of each line for reassembly.
• Unbolt Unit: Remove mounting bolts and extract the module. Transfer any brackets or grommets as required.
• Install New Unit: Mount and torque fasteners to manufacturer values, reconnect hydraulic lines and electrical connectors.
• Bleed Brakes: Perform thorough brake bleeding (preferably pressure or vacuum bleeding) to remove air from the system.
• Diagnostics & Calibration: Use a compatible diagnostic tool to clear faults and perform ABS/ESP initialization or bleeding procedures as required by the vehicle.

Recommendations For Installation

• Perform the replacement in a clean environment and do not introduce dirt into the brake hydraulic system.
• Always replace or inspect brake fluid and hoses; contaminated fluid can cause early failure.
• Check wheel speed sensors, tone rings and wiring before replacing the module — failed sensors are a common cause of ABS faults.
• Use the correct diagnostic equipment (DiagBox or equivalent for PSA vehicles) for fault clearing and system initialization.
• If unsure about hydraulic connections or diagnostics, have the system serviced by a qualified technician.

Why This Part Commonly Fails

• Moisture Ingress And Corrosion: Water penetration and corrosion of hydraulic ports or electronic connectors cause electrical faults or hydraulic leaks.
• Electrical Surges Or Poor Grounding: Voltage spikes, poor battery connections or jump‑starting mistakes can damage internal electronics.
• Wear Of Pump Motor And Valves: Mechanical wear of the pump motor or hydraulic valve block may lead to loss of pump function or pressure modulation.
• Connector Damage And Wiring Faults: Broken pins, chafed wiring or rodent damage produce intermittent faults that affect unit behavior.
• Contaminated Brake Fluid: Debris or moisture in the brake fluid accelerates corrosion inside the hydraulic block.

Final Notes

Replacing an ABS/ESP module restores critical safety functions but should be done with care: follow manufacturer procedures for disconnection, bleeding and diagnostics to ensure safe and correct operation after installation.

Bosch ABS/ESP control module with hydraulic pump for Peugeot 307, supplied with a short section of wiring harness. This unit is designed for PSA Citroën/Peugeot vehicles and matches the OEM numbers listed below.

Function And Symptoms

The ABS/ESP control module monitors wheel speed sensors and modulates brake pressure to prevent wheel lock and to support stability control functions. Common indications of a failing unit include illuminated ABS or ESP warning lights, reduced braking performance, unusual pedal feel, diagnostic fault codes, or audible pump operation when the system activates. Failures are often caused by electrical faults, corrosion, water ingress, or internal pump/valve wear.

Installation Notes

Replacement should be performed by a qualified mechanic. Typical steps: disconnect the battery, access and unbolt the ABS unit, disconnect electrical connectors and brake lines (prepare fluid capture), fit the replacement unit, refill and bleed the brake system, then use a diagnostic tool to clear faults and perform coding or module pairing if required. Some swaps are direct if part numbers match, but diagnostic verification is recommended.

Technical Information

• Manufacturer: Bosch
• Model: Peugeot 307 (PSA Group fitment – verify by OEM number)
• Product Codes: 9660535780, 0265950374, 4541J3
• Other Numbers: 9649988180, 0265234152, 265950374
• Included: Short wiring harness section

Compatibility & Advice

Always cross-check the OEM numbers on your original part before purchase. After fitment, bleeding the brake system and a diagnostic check are essential to ensure full ABS/ESP function. If in doubt, consult a professional workshop.

This Bosch ABS/ESP control module is designed for Peugeot 307 models and carries multiple OEM reference numbers commonly used in parts searches. The unit combines the hydraulic pump and electronic control functions required for modern anti-lock braking and electronic stability systems, restoring proper ABS/ESP operation and improving vehicle safety on slippery surfaces. Ideal for professional workshops and experienced DIY mechanics who search by product code when sourcing replacement modules.

Features

• Integrated ABS hydraulic pump and electronic control unit (ESP) for coordinated braking and stability intervention.
• Restores ABS modulation and ESP intervention to prevent wheel lock and reduce understeer/oversteer events.
• OE Bosch design compatible with Peugeot 307 braking systems.
• Commonly referenced by multiple part numbers—often searched directly by code for fast identification.

Technical Information

• Manufacturer: Bosch
• Model: Peugeot 307
• Product Codes: 9660535780, 0265950374, 0265234152, 9649988180, 4541J3
• Additional Numbers: 265234152, 265950374

Compatibility

Fits Peugeot 307 range. Part compatibility depends on the exact vehicle equipment and OEM code—this item is intended for Peugeot 307 chassis and braking systems that use the listed part numbers.

Installation

Recommended for professional workshops or experienced DIYers. Typical replacement steps:

• Park vehicle on level ground, engage handbrake and support with axle stands if lifting is required.
• Disconnect the negative battery terminal before any work on the ABS/ESP unit to avoid electrical damage.
• Access the ABS module (often located in the engine bay near the brake master cylinder); remove protective covers and unplug electrical connectors.
• Carefully loosen and remove hydraulic brake lines—prepare to collect brake fluid and avoid introducing contamination.
• Unbolt the unit from its mounting bracket and remove. Fit the replacement unit, tightening fasteners to manufacturer torque settings.
• Reattach hydraulic lines using new sealing washers where recommended, refill the brake reservoir, and perform a complete brake bleed to remove air from the system.
• Clear ABS/ESP fault codes with a diagnostic tool and verify correct operation with a road test. If faults persist, re-check connections and hydraulic integrity.

Most Common Failure Reasons

• Corrosion and moisture ingress causing electrical PCB damage or poor connector contacts.
• Wear of the pump motor (brushes) or internal hydraulic valves leading to loss of pressure or intermittent operation.
• Contamination in the brake fluid or internal valve blockage affecting modulation performance.
• Electrical faults from short circuits, water exposure, or damaged wiring/connectors.
• Physical damage from collisions or impact to the mounting area.

Installation Recommendations

• Always disconnect the battery before starting work and follow the vehicle manufacturer’s safety instructions.
• Use clean brake fluid and recommended bleed procedures to avoid air in the system; replace seals and crush washers as needed.
• Inspect wheel speed sensors and wiring when addressing ABS/ESP faults—sensor issues often trigger pump activation and premature wear.
• After replacement, use an appropriate diagnostic tool to clear fault codes and confirm sensor inputs and actuator outputs.

Note

Unit identification by part number is common practice—searching the listed codes will help find the matching module. This description is based on the provided part references and general technical knowledge of ABS/ESP systems.