Audi A6 C5 4B 2002-2003 Lateral Impact Airbag Crash Sensor 4B0959643C
Audi A6 C5 4B 2002-2003 Lateral Impact Airbag Crash Sensor 4B0959643C
THEPARTPILOT
Carefully selected vehicle components, clear part-number matching and buyer-first fitment information from a specialist UK automotive business.
Audi A6 C5 / 4B Side Impact Safety Sensor
Catalogue-backed advertised fitment: selected 2002–2003 Audi A6 C5 / 4B applications.
Item Details & Identification
Actual Item — High Resolution Reference
Match the housing, electrical connection, fixing points, directional arrow and stamped number to your original component.
70% Potential Saving vs Brand-New Equivalent
Factory-engineered fit without the brand-new price
A correctly matched original factory component preserves the connector keying, mounting geometry, sensor orientation and system integration engineered for the vehicle.
Poorly specified low-cost copies may introduce avoidable risks such as incorrect fit, unsuitable mounting geometry, inconsistent connector design or incompatible electrical characteristics.
Choosing a carefully matched premium pre-owned factory component can deliver substantial value while retaining the physical specification originally designed around the vehicle.
*Potential saving compared with an equivalent brand-new factory component. Actual saving varies by application, availability and current new-part pricing.
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A large inventory gives our team access to a wide range of mechanical, electrical, interior and body components for everyday vehicle repairs.
Compatibility Guide
| Year | Vehicle / Body | Engine / Drivetrain | Fitment Note |
|---|---|---|---|
| 2002 | A6 C5/4B Saloon | 3.0L V6 | Catalogue-backed selected application |
| 2002 | A6 C5/4B Quattro Saloon | 2.7L V6 Turbo | Catalogue-backed selected application |
| 2002 | A6 C5/4B Quattro Saloon | 3.0L V6 | Catalogue-backed selected application |
| 2002 | A6 C5/4B Quattro Saloon | 4.2L V8 | Catalogue-backed selected application |
| 2002 | A6 C5/4B Quattro Avant | 3.0L V6 | Catalogue-backed selected application |
| 2003 | A6 C5/4B Saloon | 3.0L V6 | VIN last six digits below 108194 |
| 2003 | A6 C5/4B Quattro Saloon | 2.7L V6 Turbo | VIN last six digits below 108194 |
| 2003 | A6 C5/4B Quattro Saloon | 3.0L V6 | VIN last six digits below 108194 |
| 2003 | A6 C5/4B Quattro Saloon | 4.2L V8 | VIN last six digits below 108194 |
| 2003 | A6 C5/4B Quattro Avant | 3.0L V6 | VIN last six digits below 108194 |
⚠ Critical Fitment Check
Do not purchase on model name alone. Compare your original sensor against the high-resolution photographs and confirm the exact stamped reference 4B0 959 643 C / 4B0959643C. VIN-based catalogue confirmation is strongly recommended, particularly on 2003 vehicles.Will Not Fit / Not Covered By This Advertised Fitment
- Audi A6 C6 / 4F and later-generation applications are not included in this advertised fitment.
- Vehicles carrying a different stamped sensor number, connector design or mounting/orientation arrangement are not covered unless an authoritative VIN catalogue confirms a replacement relationship.
- The cited 2003 applications at or above the catalogue VIN threshold of last-six 108194 are not advertised here.
- Earlier 1997/1998–2001 C5 applications are not being promised by this listing because available marketplace references conflict. Match the VIN and exact original part number first.
- Diesel or other engine applications not shown in the verified compatibility table are not automatically included.
Technical Fitment Reference
LEFT / RIGHT SIDE-IMPACT SENSOR POSITION
Exact chassis mounting position can vary with vehicle body, equipment level and application. Use your removed component as the primary mounting reference. Match the electrical connector, mounting face, fixing points and directional arrow exactly before installation.
Replace this reference panel with a seller-owned chassis-location photograph if you have one for the exact donor/application.
What This Sensor Does
Impact Detection
Monitors the rapid acceleration/deceleration characteristics associated with a side or lateral collision event.
SRS Communication
Sends collision-related information into the vehicle's supplemental restraint control system for deployment evaluation.
Safety-Critical Mounting
Correct fixing, clean mounting surfaces and the original directional orientation are important to correct system operation.
Common Reasons For Replacement
Replacement may be considered following an appropriate diagnostic procedure where there is a stored impact-sensor fault, internal sensor fault, damaged connector or wiring interface, corrosion, physical collision damage, or a sensor specifically identified as faulty by the vehicle's SRS diagnostic system.Professional Fitting Guide
Safety-system work should be carried out by a competent automotive technician using the correct vehicle repair information.
- Read and record the SRS diagnostic trouble codes and establish that this sensor is the component requiring attention.
- Switch the ignition off, remove the key and isolate the battery in accordance with the manufacturer's SRS repair procedure. Observe the specified system-discharge waiting period.
- Remove the necessary interior trim, seat or access components required to reach the original side-impact sensor on your exact vehicle.
- Release the electrical connector carefully. Never pull the connector out by its wiring.
- Record the original sensor position and the direction of the orientation arrow before disturbing the fixing.
- Remove the retaining fastener(s), then ensure the mounting surface is clean, flat, dry and free from corrosion or distortion.
- Install the matching replacement in precisely the same orientation. Tighten the mounting hardware only to the vehicle manufacturer's specified torque figure.
- Reconnect the electrical connector and refit all removed trim/components correctly.
- Restore battery power according to the manufacturer's procedure, scan the SRS system, clear appropriate stored codes and confirm that the airbag/SRS self-test completes without an active warning.
Safety Notice
Never guess torque settings or bypass manufacturer SRS precautions. Do not use impact tools on the sensor and do not probe restraint-system circuits with inappropriate test equipment. The vehicle should not be returned to normal road use until the SRS system has passed its diagnostic check.Fitting Service & Labour Planning
Static Garage Labour Cost Matrix
| Estimated Time | £40/hr | £60/hr | £80/hr | £100/hr |
|---|---|---|---|---|
| 0.5 hour | £20 | £30 | £40 | £50 |
| 1.0 hour | £40 | £60 | £80 | £100 |
| Planning Range | £20–£40 | £30–£60 | £40–£80 | £50–£100 |
Labour illustration only. Excludes part cost, separate diagnostic charges, additional repairs and any taxes/charges applicable to the repairer's service.
Buy The Correct Part First Time
1 — Read Your Number
Check the number physically stamped or printed on your original sensor.
2 — Compare The Photos
Match connector shape, casing, mounting points and orientation arrow.
3 — Confirm VIN
Use VIN-based catalogue checking where available, particularly for 2003 vehicles.
Automated vehicle-specific dropdowns and compatibility tools are useful, but buyers are strongly urged to verify fitment against the high-resolution item photographs and exact stamped part number. The physical number on the removed component and a VIN-based catalogue check should take priority where any information conflicts.
Delivery & International Shipping
UK Delivery
Buyers pay the calculated delivery charge displayed by eBay at checkout. No free-postage promise is made in this description.
International Delivery
International shipping is available through the eBay Global Shipping Programme where eBay offers it for the buyer's destination. Supported destinations may include locations across Europe, the USA, Canada, Australia and other eligible regions. Final availability and charges are displayed at checkout.
Important Delivery Address Notice
Important: Customers must ensure their checkout address is correct prior to paying. Due to strict eBay Seller Protection regulations, we are entirely unable to alter or change your delivery address after purchase.Prepared For Secure Dispatch
Components are prepared for shipment with protective packaging appropriate to the item's shape, weight and electrical/mechanical sensitivity.
VAT Margin Scheme Information
Returns & Condition Protection
Returned Item Condition
Where eBay makes the deduction facility available, an eligible return that comes back installed, used beyond reasonable inspection, altered, incomplete or damaged may be subject to a deduction only to reflect the actual resulting loss in value and in accordance with eBay's applicable seller-protection rules. No automatic 50% restocking deduction applies merely because the buyer ordered the wrong variant or changed their mind.How to Find Us / Customer Support
Need help before ordering?
Please message our team directly through eBay Messages. Our complete legally required business contact details and physical address are displayed by eBay in the Business Seller Information / Business Details section.
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Scan the QR code to contact ThePartPilot on WhatsApp for fitment checks, appointments or fitting service availability.For faster fitment help, send your vehicle registration, VIN if available, and clear photos of your existing part, connector and part number.