This page lists 7 interior parts for the 2018 Acura RLX, across 4 part types, covering both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS. Every part shows its brand, manufacturer part number and fitment notes.
The interior on the 2018 Acura RLX covers cabin hardware — seat components, handles, switch bezels, carpet, pedals and the pieces that take daily wear. The largest groups are Floor Mat (4 parts), Accelerator Pedal Position Sensor (1 part) and Heel Pad (1 part). The other 1 part type covers the remaining 1 part.
The 2018 Acura RLX was sold with both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2018 Acura RLX interior parts are DASH DESIGNS (4 parts), WELLS (1 part) and DORMAN (1 part), plus 1 more brand. Quality grades include All Weather and Carpet.
Each part number listed for the 2018 Acura RLX opens a page with every vehicle that part fits.
Accelerator Pedal Position Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 3.5L V6 ELECTRIC/GAS | 5S15871 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Accelerator Pedal position sensors. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
One part is listed for the 2018 Acura RLX — WELLS 5S15871.
Floor Mat
All Weather
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DASH DESIGNS Fits: 3.5L V6 ELECTRIC/GAS | A250403CL | 🇺🇸 US 🇨🇦 CA | Endura ClearVinyl | View on Amazon |
| DASH DESIGNS Fits: 3.5L V6 ELECTRIC/GAS | B250403CL | 🇺🇸 US 🇨🇦 CA | Endura ClearVinyl | View on Amazon |
Carpet
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DASH DESIGNS Fits: 3.5L V6 ELECTRIC/GAS | A25040E | 🇺🇸 US 🇨🇦 CA | Endura Custom | View on Amazon |
| DASH DESIGNS Fits: 3.5L V6 ELECTRIC/GAS | B25040E | 🇺🇸 US 🇨🇦 CA | Endura Custom | View on Amazon |
This table covers the floor mats cut for this cabin.
DASH DESIGNS supplies the 4 Floor Mat parts for the 2018 Acura RLX.
The All Weather section lists 2 options from DASH DESIGNS — grouped under the catalog's "All Weather" designation — the notes column spells out what sets them apart. DASH DESIGNS A250403CL is listed in this group.
The Carpet section lists 2 options from DASH DESIGNS — grouped under the catalog's "Carpet" designation — the notes column spells out what sets them apart. DASH DESIGNS A25040E is listed in this group.
This group includes DASH DESIGNS A250403CL, DASH DESIGNS B250403CL and DASH DESIGNS A25040E and the remaining parts above.
Heel Pad
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.5L V6 ELECTRIC/GAS | 74015 | 🇺🇸 US 🇨🇦 CA | Brake Stop PadAccelerator Stop Pad | View on Amazon |
This table covers the Heel pads. Typical signs include squeal, grind, or a wear-indicator scrape. Replace pads as an axle set and inspect the rotor or drum they ride on.
This group shows a single part: DORMAN 74015.
Rain Sensor Pad
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRECISION Fits: 3.5L V6 ELECTRIC/GAS | RSK2685 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Rain Sensor pads. Typical signs include squeal, grind, or a wear-indicator scrape. Replace pads as an axle set and inspect the rotor or drum they ride on.
This group shows a single part: PRECISION RSK2685.
Buying Interior Parts for a 2018 Acura RLX
On this vehicle, the interior covers cabin hardware — seat components, handles, switch bezels, carpet, pedals and the pieces that take daily wear.
- Match the engine first. Every interior 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 the retainer clips with any panel removal — they are cheap insurance against squeaks.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Floor Mat and Accelerator Pedal Position Sensor .
Frequently Asked Questions
How many interior parts fit the 2018 Acura RLX?
Our catalog currently lists 7 interior parts for the 2018 Acura RLX across 4 subcategories and 4 brands, covering both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS. Each part is matched to the engine(s) it fits.
Do interior parts differ between 2018 Acura RLX engines?
Yes. Every interior 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 interior problems on a 2018 Acura RLX?
Common symptoms include a door handle that works only from outside, sagging headliner, a window switch that needs two presses, or seat adjusters that stick. 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 retainer clips with any panel removal — they are cheap insurance against squeaks.
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 Acura RLX 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 Acura RLX?
First match the engine — each row shows which engine(s) the part fits. Then interior plastics are often color- and trim-specific — check the notes column against your trim level before ordering. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 Acura RLX
Interior Parts for Other Acura RLX Years
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