The 2018 Audi A8 has 32 suspension parts with verified fitment on this page — 7 part types and 10 brands, covering all 3 engine options (3.0L V6 Supercharged, 4.0L V8 Turbocharged and 6.3L W12). Each part includes a manufacturer part number and application notes.
On the 2018 Audi A8, the suspension system controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links. 25 parts of the 32 listed are Ride Height Sensor (12 parts), Shock / Strut (7 parts) and Air Suspension Solenoid / Valve (6 parts). The other 4 part types cover the remaining 7 parts.
The 2018 Audi A8 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
10 brands supply suspension parts for the 2018 Audi A8, led by ARNOTT (13 parts), FCS (6 parts) and ÜRO PARTS (3 parts), plus 7 more brands. Quality grades include Original Ride Quality, Economy and Daily Driver.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2018 Audi A8. 7 parts have it, including DORMAN 949811 (Air Suspension Solenoid / Valve) and ARNOTT RH3590 (Ride Height Sensor). Each part number opens a page with every vehicle that part fits.
Air Compressor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARNOTT Fits: 6.3L W12 | P3301 | 🇲🇽 MX | ArnottAir Suspension Compressor | View on Amazon |
| ARNOTT Fits: 6.3L W12 | P2986 | 🇲🇽 MX | ArnottAir Suspension Compressor | View on Amazon |
| WESTAR Fits: 6.3L W12 | CD7748 | 🇲🇽 MX | View on Amazon |
This table covers the Air compressors. Typical signs include no cold air, rapid clutch cycling, or a growl when the clutch engages. Replace the drier and evacuate the system whenever the circuit is opened.
3 Air Compressor parts are listed for the 2018 Audi A8, from ARNOTT and WESTAR.
Listed part numbers: ARNOTT P3301, ARNOTT P2986 and WESTAR CD7748.
Air Suspension Line Connector / Fitting
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARNOTT Fits: 6.3L W12 | K4362 | 🇲🇽 MX | Fits FrontAt Strut | View on Amazon |
This table covers the Air Suspension Line Connector fittings.
This group shows a single part: ARNOTT K4362.
Air Suspension Solenoid / Valve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 6.3L W12 | 949811 | 🇲🇽 MX | View on Amazon | |
| ÜRO PARTS Popular Fits: 6.3L W12 | 4H0616013A | 🇲🇽 MX | View on Amazon | |
| ARNOTT Fits: 6.3L W12 | VB3491 | 🇲🇽 MX | View on Amazon | |
| ARNOTT Fits: 6.3L W12 | VB3832 | 🇲🇽 MX | View on Amazon | |
| CARDONE Fits: 6.3L W12 | 4J4008V | 🇲🇽 MX | View on Amazon | |
| FCS Fits: 6.3L W12 | MV002 | 🇲🇽 MX | View on Amazon |
This table covers the Air Suspension Solenoid valves. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one.
6 Air Suspension Solenoid / Valve parts are listed for the 2018 Audi A8, from ARNOTT, DORMAN, ÜRO PARTS and 2 other brands. DORMAN 949811 carries the "Popular" badge.
Listed part numbers: DORMAN 949811, ÜRO PARTS 4H0616013A and ARNOTT VB3491, plus the other parts above.
Ball Joint
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.3L W12 | 538237 | 🇲🇽 MX | Front Lower | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: 6.3L W12 | BJ12205 | 🇲🇽 MX | Front Lower | View on Amazon |
This table covers the ball joints that articulate each control arm at the knuckle.
2 Ball Joint parts are listed for the 2018 Audi A8, from DORMAN and FVP.
The Daily Driver section lists 1 option from DORMAN — grouped for everyday commuting duty. DORMAN 538237 is listed in this group.
In the Economy grade, FVP supplies 1 part: the catalog's value-priced group. A representative part number is FVP BJ12205.
This group includes DORMAN 538237 and FVP BJ12205.
Control Arm Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: 6.3L W12 | 1018155 | 🇲🇽 MX | Front Upper | View on Amazon |
This table covers the bushings pressed into each control arm. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
One part is listed for the 2018 Audi A8 — BECK/ARNLEY 1018155.
Ride Height Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARNOTT Popular Fits: 6.3L W12 | RH3590 | 🇲🇽 MX | Rear Left | View on Amazon |
| FCS Popular Fits: 6.3L W12 | HS011 | 🇲🇽 MX | Rear Left | View on Amazon |
| FCS Popular Fits: 6.3L W12 | HS009 | 🇲🇽 MX | Front Left | View on Amazon |
| ARNOTT Fits: 6.3L W12 | RH3589 | 🇲🇽 MX | Rear Right | View on Amazon |
| ARNOTT Fits: 6.3L W12 | RH3587 | 🇲🇽 MX | Front Right | View on Amazon |
| ARNOTT Fits: 6.3L W12 | RH3588 | 🇲🇽 MX | Front Left | View on Amazon |
| FCS Fits: 6.3L W12 | HS012 | 🇲🇽 MX | Rear Right | View on Amazon |
| FCS Fits: 6.3L W12 | HS010 | 🇲🇽 MX | Front Right | View on Amazon |
| SKP Fits: 6.3L W12 | SKRHS047 | 🇲🇽 MX | Front Right | View on Amazon |
| SKP Fits: 6.3L W12 | SKRHS048 | 🇲🇽 MX | Rear Right | View on Amazon |
| ÜRO PARTS Fits: 6.3L W12 | 4H0941310C | 🇲🇽 MX | Rear Right | View on Amazon |
| ÜRO PARTS Fits: 6.3L W12 | 4H0941285G | 🇲🇽 MX | Front LeftHeadlamp Level | View on Amazon |
This table covers the Ride Height sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
12 Ride Height Sensor parts are listed for the 2018 Audi A8, from ARNOTT, FCS, SKP and 1 other brand. ARNOTT RH3590 carries the "Popular" badge.
Shock / Strut
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARNOTT Fits: 6.3L W12 | AS2864 | 🇲🇽 MX | RemanufacturedAir Strut | View on Amazon |
Original Ride Quality
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FCS Popular Fits: 6.3L W12 | 99010 | 🇲🇽 MX | Air Strut | View on Amazon |
| MONROE Popular Fits: 6.3L W12 | 40460 | 🇲🇽 MX | OESpectrumAir Strut | View on Amazon |
| ARNOTT Fits: 6.3L W12 | AS3123 | 🇲🇽 MX | Air Strut | View on Amazon |
| ARNOTT Fits: 6.3L W12 | ASE3819 | 🇲🇽 MX | eRide Adaptive Ride ControlAir Strut | View on Amazon |
| ARNOTT Fits: 6.3L W12 | AS3121 | 🇲🇽 MX | Air Strut | View on Amazon |
| MONROE Fits: 6.3L W12 | 40462 | 🇲🇽 MX | OESpectrumAir Strut | View on Amazon |
This table covers the shocks and struts that damp wheel motion. Typical signs include a nose that keeps bouncing, cupped tires, or fluid weeping down the body. Replace shocks or struts in axle pairs and renew the mounts if they are torn or collapsed.
7 Shock / Strut parts are listed for the 2018 Audi A8, from ARNOTT, MONROE and FCS. FCS 99010 carries the "Popular" badge.
Economy: 1 part, from ARNOTT. A representative part number is ARNOTT AS2864.
In the Original Ride Quality grade, ARNOTT, MONROE and FCS supply 6 parts: grouped under the catalog's "Original Ride Quality" designation — the notes column spells out what sets them apart. A representative part number is FCS 99010.
Listed part numbers: FCS 99010, ARNOTT AS2864 and MONROE 40460, plus the other parts above.
Buying Suspension Parts for a 2018 Audi A8
On this vehicle, the suspension system controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links.
- Match the engine first. Every suspension part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace shocks and struts in axle pairs, renew the sway-bar links with the struts, and get an alignment after any control-arm or tie-rod work.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Ride Height Sensor and Shock / Strut .
Frequently Asked Questions
How many suspension parts fit the 2018 Audi A8?
Our catalog currently lists 32 suspension parts for the 2018 Audi A8 across 7 subcategories and 10 brands, covering all 3 engine options (3.0L V6 Supercharged, 4.0L V8 Turbocharged and 6.3L W12). Each part is matched to the engine(s) it fits.
Do suspension parts differ between 2018 Audi A8 engines?
Yes. Every suspension part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of suspension problems on a 2018 Audi A8?
Common symptoms include clunks over speed bumps, wandering steering, cupped tire wear, or a nose that keeps bouncing after a dip. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace shocks and struts in axle pairs, renew the sway-bar links with the struts, and get an alignment after any control-arm or tie-rod work.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2018 Audi A8 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2018 Audi A8?
First match the engine — each row shows which engine(s) the part fits. Then worn bushings often mimic bad shocks — inspect before buying, and remember loaded vs unloaded strut assemblies differ in labor by hours. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 Audi A8
Suspension Parts for Other Audi A8 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.