The 2018 Audi RS Q3 has 8 steering parts with verified fitment on this page — 3 part types and 3 brands, covering the 2.5L L5 Turbocharged engine. Each part includes a manufacturer part number and application notes.
On the 2018 Audi RS Q3, the steering system connects driver to road through the rack, pump, tie rods, and column components. All 8 listed parts are Tie Rod End (6 parts), O-Ring (1 part) and Power Steering Pump Seal Kit (1 part).
The 2018 Audi RS Q3 came with a single engine, the 2.5L L5 Turbocharged, and every part is verified against it.
3 brands supply steering parts for the 2018 Audi RS Q3, led by DORMAN (3 parts), FVP (3 parts) and ELRING (2 parts).
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2018 Audi RS Q3. 2 parts have it, including DORMAN 544101 (Tie Rod End) and DORMAN 543401 (Tie Rod End). Each part number opens a page with every vehicle that part fits.
O-Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 939710 | 🇲🇽 MX | Inner Diameter [MM]: 28.3Material: Epdm ethylene propylene diene Monomer (M-class) rubber | View on Amazon |
This table covers the O-rings that seal this joint. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove.
This group shows a single part: ELRING 939710.
Power Steering Pump Seal Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 147480 | 🇲🇽 MX | Body code: 8UAll-wheel drive (regulated electronically) | View on Amazon |
This table covers the Power Steering Pump Seal kits.
One part is listed for the 2018 Audi RS Q3 — ELRING 147480.
Tie Rod End
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular | 544101 | 🇲🇽 MX | Front Left Outer | View on Amazon |
| DORMAN Popular | 543401 | 🇲🇽 MX | Front Inner | View on Amazon |
| DORMAN | 534918 | 🇲🇽 MX | Front Right Outer | View on Amazon |
| FVP | TO43001 | 🇲🇽 MX | Front Left Outer | View on Amazon |
| FVP | TO43002 | 🇲🇽 MX | Front Right Outer | View on Amazon |
| FVP | TI43125 | 🇲🇽 MX | Front Inner | View on Amazon |
This table covers the inner and outer tie-rod ends that steer each front knuckle. Typical signs include play on center, a feathered front tire, or a boot that has split and packed with grit. Replace inner and outer ends together on a high-mileage axle, then get an alignment.
6 Tie Rod End parts for the 2018 Audi RS Q3 come from 2 brands — DORMAN and FVP. The "Popular" part is DORMAN 544101.
Listed part numbers: DORMAN 544101, DORMAN 543401 and DORMAN 534918, plus the other parts above.
Buying Steering Parts for a 2018 Audi RS Q3
On this vehicle, the steering system connects driver to road through the rack, pump, tie rods, and column components.
- Confirm you have the 2.5L L5 Turbocharged engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the inner and outer tie-rod ends together on higher-mileage vehicles, then get an alignment.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Tie Rod End and O-Ring .
Frequently Asked Questions
How many steering parts fit the 2018 Audi RS Q3?
Our catalog currently lists 8 steering parts for the 2018 Audi RS Q3 across 3 subcategories and 3 brands, covering the 2.5L L5 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of steering problems on a 2018 Audi RS Q3?
Common symptoms include play or looseness on center, a whine when turning, fluid weeping from rack boots, or uneven tire wear on the front axle. 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 the inner and outer tie-rod ends together on higher-mileage vehicles, then get an alignment.
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 RS Q3 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 RS Q3?
Every part on this page is matched to the 2.5L L5 Turbocharged engine. Then flush old power-steering fluid when replacing a pump or rack — grit in the old fluid is the number-one cause of repeat failure. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 Audi RS Q3
Steering Parts for Other Audi RS Q3 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.