Mercedes A-Class W168 1998-04 ABS ESP Pump A0034314512 Bosch 0265202412
£23.29
Skip to product information
Mercedes A-Class W168 1998-04 ABS ESP Pump A0034314512 Bosch 0265202412
THEPARTPILOT
THEPARTPILOT
THEPARTPILOT
W168 5-DOOR REFERENCE
ABS, ESP, BAS or traction-control warnings remain illuminated.
Pump motor, internal valve, pressure-sensor or hydraulic-unit communication codes.
ABS or stability intervention may be disabled even though basic braking remains.
Warnings may appear after start-up, during low voltage, or after the vehicle moves.
Leaks, air ingress or poor pedal feel require immediate inspection; do not continue driving an unsafe vehicle.
A sensor or wiring fault can mimic pump failure, so scan data and circuit tests are essential.
FITTING SUBJECT TO AVAILABILITY
25,000+ PARTS ON THE SHELF
Used electronic and hydraulic parts are packed to protect connectors, ports and mounting points.
Available where eBay shows the Global Shipping Programme or eBay International Shipping at checkout. Country eligibility and charges are controlled by eBay.
Confirm the delivery address before payment. Sellers cannot redirect an order to a different address after checkout.
Mercedes A-Class W168 1998-04 ABS ESP Pump A0034314512 Bosch 0265202412
£23.29
TPP
THEPARTPILOT
Precision Parts. Clear Fitment. Fewer Returns.
Mercedes A-Class W168 ABS / ESP Hydraulic Pump and Control Module
Mercedes number A0034314512 | Bosch hydraulic unit 0265202412 | Bosch motor 0130108096
Used manufacturer-marked part
Actual item photographs
VIN verification recommended
Fitting service subject to availability
Before You Buy: Exact-Match Rule
This is a safety-critical braking component. Do not order by registration, model year, engine size or visual similarity alone.
The Mercedes number A0034314512 and Bosch number 0265202412 should match the original unit. Send the full 17-character VIN and a clear photograph of the existing pump markings through eBay Messages for a fitment check before purchase. The donor VIN is not visible in the original listing, so no universal fitment claim has been guessed.
The Mercedes number A0034314512 and Bosch number 0265202412 should match the original unit. Send the full 17-character VIN and a clear photograph of the existing pump markings through eBay Messages for a fitment check before purchase. The donor VIN is not visible in the original listing, so no universal fitment claim has been guessed.
THEPARTPILOT
Actual item photograph - overall unit, hydraulic block, motor and control-module assembly.
THEPARTPILOT
Actual item photograph - use the markings, plug layout and hydraulic ports to compare with your original unit.
THEPARTPILOT
Actual item photograph - connector and mounting detail. Small differences can mean the part is incompatible.
W168 5-DOOR REFERENCE
Vehicle reference only: Mercedes-Benz A-Class W168 five-door hatchback. The photograph does not prove fitment to a particular vehicle.
Vehicle reference image is a CC0 image from Wikimedia Commons. Item photographs are hosted by eBay and show the actual part.
Part Identification and Technical Detail
Part type
ABS / ESP hydraulic modulator, electric pump and electronic control-module assembly
Mercedes number
A 003 431 45 12 / A0034314512
Bosch hydraulic unit
0 265 202 412 / 0265202412
Bosch motor
0 130 108 096 / 0130108096
Vehicle family
Mercedes-Benz A-Class W168, five-door hatchback; exact variant requires VIN and number verification
Construction
Machined aluminium hydraulic block, electric pump motor, internal solenoid valves, pressure sensor, multi-pin electronic module and steel mounting hardware
Condition
Used. Cosmetic marks, oxidation and storage wear are normal. Review every actual-item photograph before ordering.
Included
The complete unit shown in the listing photographs. Brackets, pipes, bolts, fluid, coding and fitting are not included unless visibly attached or stated elsewhere in the listing.
Where It Is Fitted and What It Controls
The assembly is mounted in the engine bay within the hydraulic brake circuit, close to the brake-line routing and master-cylinder system. The exact side and access route can vary with right-hand-drive or left-hand-drive layout. During emergency braking and stability intervention, the unit rapidly modulates individual wheel-brake pressure for ABS, traction-control and ESP functions.
A failed warning light or fault code does not automatically prove that the pump is defective. Wheel-speed sensors, wiring, low system voltage, brake-light switches, steering-angle calibration and other faults can produce similar symptoms. Professional diagnosis is strongly recommended before replacing this unit.
Photo-Verified Compatibility Chart
The table below records applications supported by matching part-number or donor evidence. It is deliberately narrower than a generic model-year lookup. Every purchase remains conditional on an exact number match and VIN check.
| Vehicle | Chassis / engine | Verified evidence | Decision |
|---|---|---|---|
| Mercedes A140 1.4 petrol, W168, 5-door | 168.031 / M166.940 | Matching 0265202412 / A0034314512 donor evidence for model year 2000 | Check exact numbers and VIN |
| Mercedes A160 1.6 petrol, W168, 5-door | 168.033 or 168.133 / M166.960 | Matching-number donor evidence for model years 2001, 2002 and 2004 | Check exact numbers and VIN |
| Mercedes A190 1.9 petrol, W168, 5-door | 168.032 or 168.132 / M166.990 | Matching-number donor evidence for model years 1999 and 2000 | Check exact numbers and VIN |
| Mercedes A170 CDI 1.7 diesel, 90 hp, W168, 5-door | 168.008 / OM668.940 | Matching 0265202412 application evidence for 1998-2001 | Check exact numbers and VIN |
Why the title shows 1998-2004: this is the broad W168 search window in which matching units appear. It does not mean every W168 built in those years uses this pump. The exact Mercedes and Bosch numbers are the controlling identifiers.
Not Confirmed / Do Not Assume Fitment
| Vehicle or unit | Reason |
|---|---|
| Mercedes A170 CDI 95 hp, chassis 168.009 / 168.109, OM668.942 | Not confirmed for this exact pump number; facelift variants can use a different hydraulic unit. |
| Mercedes A160 CDI 75 hp | Do not rely on the existing listing compatibility table. Confirm by VIN and matching pump numbers. |
| Mercedes A210 2.1 petrol | No sufficient matching-number evidence for this actual unit. |
| Mercedes A-Class W169, Vaneo W414 or any non-W168 vehicle | Different vehicle platform and commonly different hydraulic-unit numbers. |
| Pre-ESP or differently equipped W168 vehicles | Equipment specification can change the pump and control module. |
| A0034317412 / 0265202433, A0034317512 / 0265202434 or 0265202435, A0044310912 / 0265202461, or any other number | Different part number. Similar appearance is not sufficient. |
Common Symptoms of an ABS / ESP Hydraulic-Unit Fault
⚠
Warning lampsABS, ESP, BAS or traction-control warnings remain illuminated.
🔧
Stored diagnostic faultsPump motor, internal valve, pressure-sensor or hydraulic-unit communication codes.
🚗
Safety functions unavailableABS or stability intervention may be disabled even though basic braking remains.
🔄
Intermittent operationWarnings may appear after start-up, during low voltage, or after the vehicle moves.
💧
Hydraulic concernsLeaks, air ingress or poor pedal feel require immediate inspection; do not continue driving an unsafe vehicle.
✅
Diagnosis firstA sensor or wiring fault can mimic pump failure, so scan data and circuit tests are essential.
Why Choose a Manufacturer-Marked Used Unit?
Correct engineering specification
The hydraulic port layout, connector design, pressure control, materials and internal calibration were developed for the vehicle system. Matching the original Mercedes and Bosch numbers reduces the risk associated with unverified pattern units.
The hydraulic port layout, connector design, pressure control, materials and internal calibration were developed for the vehicle system. Matching the original Mercedes and Bosch numbers reduces the risk associated with unverified pattern units.
Value and sustainability
Depending on the part and current market price, a quality used component may cost as much as 70% less than a comparable new replacement. Reusing serviceable parts also reduces demand for new raw materials and manufacturing energy.
Depending on the part and current market price, a quality used component may cost as much as 70% less than a comparable new replacement. Reusing serviceable parts also reduces demand for new raw materials and manufacturing energy.
Savings vary by part, supplier and market price and are not guaranteed. Compare current new and used prices before purchasing.
Professional Fitting Guide
Brake-system work should be completed by a trained technician. Incorrect installation, contamination, trapped air, wrong coding or inadequate leak testing can cause serious injury, loss of braking assistance or loss of ABS/ESP functions. Use the manufacturer workshop information for the exact VIN.
Typical Tools and Equipment
- Mercedes-capable diagnostic scanner with ABS/ESP actuation, bleed and calibration functions
- Pressure brake bleeder and the correct brake-fluid specification for the vehicle
- Flare-nut spanners, sockets, extensions and a calibrated torque wrench
- Brake-line caps or plugs, absorbent protection, cleaning materials and suitable PPE
- Battery support or isolation equipment as required by the manufacturer procedure
High-Level Installation Sequence
- Verify the 17-character VIN, option specification, connector, hydraulic ports and all original part numbers.
- Run a full diagnostic scan; record faults, coding and calibration data before removal.
- Follow the manufacturer battery-disconnection and brake-system safety procedure.
- Clean the work area, label each brake line, disconnect the electrical connector and cap open hydraulic lines immediately.
- Remove the original unit and mounting bracket as directed by the vehicle workshop information.
- Install the exact-match replacement and tighten fasteners and hydraulic unions to the VIN-specific manufacturer values.
- Refill and pressure-bleed the brake system; run the ABS/ESP automated bleed routine where required.
- Carry out coding, steering-angle or ESP calibration if demanded by the diagnostic system.
- Check every union for leaks, confirm a firm pedal, clear faults and complete a controlled professional road test.
Estimated Labour Time and Garage-Cost Guide
Typical workshop time is approximately 2.5 to 4.0 hours, including diagnosis, replacement, hydraulic bleeding and calibration. Corroded unions, access problems, coding or additional faults can increase the time.
| Garage rate | 2.5 hours | 3.0 hours | 4.0 hours |
|---|---|---|---|
| £60 per hour | £150 | £180 | £240 |
| £80 per hour | £200 | £240 | £320 |
| £100 per hour | £250 | £300 | £400 |
| £120 per hour | £300 | £360 | £480 |
| £150 per hour | £375 | £450 | £600 |
Static calculator: estimated labour = garage hourly rate x actual labour hours. Parts, brake fluid, diagnostics, coding, recovery and VAT charged by the fitting garage are additional.
Fitting Service, Stock and Collection
FITTING SUBJECT TO AVAILABILITY
Illustrative workshop image. Ask through eBay Messages about diagnosis and fitting availability before travelling.
25,000+ PARTS ON THE SHELF
Illustrative warehouse image. ThePartPilot states that more than 25,000 parts are held in stock at any one time.
Collection: available seven days a week until 8pm by prior appointment, including bank holidays by prior arrangement. Collection details must be agreed through eBay after purchase. Do not travel without an appointment.
Workshop and warehouse photographs are licensed illustrative images and are not photographs of the seller's premises.
Delivery, Address and Returns
📦
Secure dispatchUsed electronic and hydraulic parts are packed to protect connectors, ports and mounting points.
🌎
International deliveryAvailable where eBay shows the Global Shipping Programme or eBay International Shipping at checkout. Country eligibility and charges are controlled by eBay.
🏠
Checkout addressConfirm the delivery address before payment. Sellers cannot redirect an order to a different address after checkout.
Returns: the listing provides 30-day returns. Incorrectly ordered parts should be returned complete, secure and in the same condition supplied. Any deduction is applied only where eBay rules and applicable law allow. Valid item-not-as-described rights are not restricted. Fitment checks are available through eBay Messages before purchase.
VAT margin scheme: sold under the applicable second-hand-goods margin scheme. VAT is not shown separately and cannot be reclaimed as a separate input-tax amount.
How to find us / WhatsApp
Scan the QR code to open a WhatsApp chat for collections and enquiries.
If the QR image needs refreshing, generate it again from the same WhatsApp link.
Scan the QR code to open a WhatsApp chat for collections and enquiries.
If the QR image needs refreshing, generate it again from the same WhatsApp link.
Buy the Correct Part First Time
Send These Details Through eBay Messages
- Full 17-character VIN
- Mercedes number from the original pump
- Bosch number from the hydraulic block
- Clear photographs of the connector, ports and complete original unit
- Vehicle model, engine, year and whether right-hand drive or left-hand drive
Final fitment rule
A visual match helps identify obvious differences, but it is not enough on its own. For this braking component, the VIN, option data and exact Mercedes/Bosch numbers take priority over registration lookups, generic item specifics and broad compatibility charts.
A visual match helps identify obvious differences, but it is not enough on its own. For this braking component, the VIN, option data and exact Mercedes/Bosch numbers take priority over registration lookups, generic item specifics and broad compatibility charts.