Audi A4 Parts & Spares

Fitment guides, buying advice and live UK eBay prices for the Audi A4 — always confirm against your reg or VIN.

The Audi A4 is a familiar sight on UK roads, which is good news when something needs replacing: parts are plentiful and prices stay competitive. Owners search most often for brake pads, wheel bearing and headlight — but the model spans different engines, trims and, on most generations, a mid-life facelift, so the same-looking part isn't always the right one.

Use the guides below to match a part to your exact Audi, then check live prices from trusted UK eBay sellers. Every part page lists what to confirm before you buy, so you avoid the classic wrong-part return.

Most-searched Audi A4 parts

Brake PadsView prices ›

Front and rear are different sizes; some trims (GTI/R/sport) run bigger brakes with their own pad. Match your caliper, not just the model.

Wheel BearingView prices ›

Front and rear differ; some have integrated ABS sensors in the hub — match the right type.

HeadlightView prices ›

Check halogen vs xenon AND left/right (driver/passenger). Pre-facelift and facelift lenses differ — match your reg.

Timing BeltView prices ›

Belt routing varies by engine code (1.6 TDI vs 2.0 TDI vs 1.4 TSI). Match your engine code, not just the model.

AlternatorView prices ›

Match the amp rating and pulley type (clutch vs solid). Stop/start cars often need a specific unit.

Drive ShaftView prices ›

Left/right and length differ; manual vs DSG and engine torque rating matter. Match the side and gearbox.

How to check a part fits your Audi A4

The same Audi can be sold with several engines and trims, and most generations get a mid-life facelift that changes lights, bumpers and trim. Before you buy:

Enter your registration to filter out the obvious mismatches.
Match your engine code for anything attached to the engine.
Check your trim — sportier versions often use bigger brakes and specific parts.
Confirm pre-facelift vs facelift if your car sits near the changeover year.
Best of all, match the part number on the unit you’re replacing.

Full walkthrough: how to check a part fits your exact car.

Buying Audi A4 parts: genuine, aftermarket or used

Genuine and OEM parts are the safe pick for safety-critical or hard-to-reach components and cars you’re keeping long term. For routine wear items, a reputable aftermarket brand is usually as good for far less. And for pricey assemblies on an older Audi A4 — alternators, starters, lights, panels — a well-rated used or reconditioned part can be the sensible choice. See OEM vs aftermarket vs used for the full rundown.

All Audi A4 parts

Brake PadsAudi A4 Wheel BearingAudi A4 HeadlightAudi A4 Timing BeltAudi A4 AlternatorAudi A4 Drive ShaftAudi A4 TurboAudi A4 DPF FilterAudi A4 EGR ValveAudi A4 ExhaustAudi A4 CV JointAudi A4 Brake DiscsAudi A4 Brake CaliperAudi A4 Glow PlugsAudi A4 Water PumpAudi A4 Clutch KitAudi A4 Suspension ArmAudi A4 GearboxAudi A4 Wing MirrorAudi A4 Engine MountAudi A4 Starter MotorAudi A4 Control ArmAudi A4 Fuel PumpAudi A4 ThermostatAudi A4 Spark PlugsAudi A4 Window RegulatorAudi A4 Mass Air Flow SensorAudi A4 Shock AbsorberAudi A4 ABS SensorAudi A4 RadiatorAudi A4 Oxygen SensorAudi A4 Crankshaft SensorAudi A4 Power Steering PumpAudi A4 Timing ChainAudi A4 Coil PackAudi A4 Catalytic ConverterAudi A4 Intake ManifoldAudi A4 Throttle BodyAudi A4 Oil PumpAudi A4 Dual Mass FlywheelAudi A4 WishboneAudi A4 Fuel InjectorAudi A4 IntercoolerAudi A4 Tail LightAudi A4 Wiper MotorAudi A4 Heater BlowerAudi A4

Audi A4 parts — common questions

How do I know a part fits my Audi A4?

Start with your registration to filter obvious mismatches, then confirm the details that matter: your engine code (for anything attached to the engine), your trim level, and whether your car is pre-facelift or facelift. The surest check is to match the part number stamped on the unit you're replacing.

Where's the best place to buy Audi A4 parts?

For most owners, eBay's UK sellers offer the widest choice and the keenest prices, covering genuine, aftermarket and used parts. Buy through eBay's checkout so you're covered by the Money Back Guarantee, and favour sellers with strong feedback and a clear returns policy.

Should I buy genuine Audi parts or aftermarket?

It depends on the part. Genuine or OEM makes sense for safety-critical or hard-to-reach components and cars you're keeping long term. For routine wear items — brakes, filters, suspension arms — a reputable aftermarket brand is usually as good for far less.

Are used Audi A4 parts safe to buy?

They can be a smart choice for expensive assemblies like alternators, starters, lights and body panels, especially on an older Audi A4. Check the seller's feedback, confirm the part number matches, and prefer sellers who state condition and offer a returns window.