18 Drivetrain parts are listed for the 2020 Acura RLX, in 6 part types, covering both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS. Each one has a brand, a manufacturer part number and notes that say where it fits.
The drivetrain system on the 2020 Acura RLX moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are Gear Oil (7 parts), CV Intermediate Shaft (4 parts) and CV Axle (3 parts). The other 3 part types cover the remaining 4 parts.
The 2020 Acura RLX was sold with both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS. 3 parts fit every engine; the other 15 are engine-specific. Each part shows which engine(s) it fits.
9 brands supply drivetrain parts for the 2020 Acura RLX, led by TRAKMOTIVE (5 parts), VALVOLINE (4 parts) and SKF (2 parts), plus 6 more brands.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2020 Acura RLX. 2 parts have it, including ACDELCO 109243 (Gear Oil) and VALVOLINE VV3246 (Gear Oil). Each part number opens a page with every vehicle that part fits.
Axle Shaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF Fits: all 2020 RLX engines | SC0889 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
This table covers the Axle Shaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
This group shows a single part: SKF SC0889.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF Fits: all 2020 RLX engines | 16541A | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2020 RLX engines | WS16541A | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
This table covers the seals where an axle shaft exits the housing. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
2 Axle Shaft Seal parts are listed for the 2020 Acura RLX, from SKF and WJB / INMOTION PARTS. All of them fit every engine offered in the 2020 RLX.
This group includes SKF 16541A and WJB / INMOTION PARTS WS16541A.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TRAKMOTIVE Fits: 3.5L V6 ELECTRIC/GAS | HO8800 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 3.5L V6 ELECTRIC/GAS | HO8699 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 3.5L V6 ELECTRIC/GAS | HO8695 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
This table covers the complete CV axle shafts from differential (or hub) to wheel. Typical signs include a click in tight turns, grease flung around the wheel well, or a vibration that builds with speed. A torn boot caught early is a boot kit; caught late it is the whole axle. Torque the axle nut to the method in the notes.
TRAKMOTIVE supplies the 3 CV Axle parts for the 2020 Acura RLX.
Part numbers include TRAKMOTIVE HO8800, TRAKMOTIVE HO8699 and TRAKMOTIVE HO8695.
CV Intermediate Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GSP Fits: 3.5L V6 | NEX21004 | 🇺🇸 US | Front Right | View on Amazon |
| TOP NOTCH Fits: 3.5L V6 | TN50099IS | 🇺🇸 US | Front Right | View on Amazon |
| TRAKMOTIVE Fits: 3.5L V6 | HO3515 | 🇺🇸 US | Front Right | View on Amazon |
| TRAKMOTIVE Fits: 3.5L V6 ELECTRIC/GAS | HO3530 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
This table covers the CV Intermediate shafts.
4 CV Intermediate Shaft parts for the 2020 Acura RLX come from 3 brands — TRAKMOTIVE, GSP and TOP NOTCH.
Part numbers include GSP NEX21004, TOP NOTCH TN50099IS and TRAKMOTIVE HO3515, among others listed above.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: 3.5L V6 | 1032804 | 🇺🇸 US | Front Outer | View on Amazon |
This table covers the boots that keep grease in a CV joint. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn.
One part is listed for the 2020 Acura RLX — BECK/ARNLEY 1032804.
Gear Oil
Dexron
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 3.5L V6 ELECTRIC/GAS | 109243 | 🇺🇸 US | Container Type: Plastic Container | View on Amazon |
Multi-Vehicle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 3.5L V6 ELECTRIC/GAS | VV3246 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Quart | View on Amazon |
| LUCAS OIL Fits: 3.5L V6 ELECTRIC/GAS | 11255 | 🇺🇸 US 🇨🇦 CA | LOW VISCOSITY SYNTHETIC MULTI-VEHICLE AUTOMATIC TRANSMISSION FLUID1 qt | View on Amazon |
| LUCAS OIL Fits: 3.5L V6 ELECTRIC/GAS | 18037 | 🇺🇸 US 🇨🇦 CA | Low Viscosity Synthetic Multi-Vehicle Automatic Transmission Fluid6 Gallon | View on Amazon |
| VALVOLINE Fits: 3.5L V6 ELECTRIC/GAS | 773775 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Gallon | View on Amazon |
| VALVOLINE Fits: 3.5L V6 ELECTRIC/GAS | 881051 | 🇺🇸 US 🇨🇦 CA | Maxlife Multi-Vehicle Full Synthetic ATF5 Gallon Bay Box | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 3.5L V6 ELECTRIC/GAS | 899179 | 🇺🇸 US 🇨🇦 CA | Extended Protection Full Synthetic ATF1 Quart | View on Amazon |
This table covers the gear oils specified for the axle or transfer case. Typical signs include a low-oil lamp, knocking, or oil that has gone thin before the next interval. Match the viscosity and spec in the notes, not just the weight on the bottle.
7 Gear Oil parts are listed for the 2020 Acura RLX, from VALVOLINE, LUCAS OIL and ACDELCO. ACDELCO 109243 carries the "Popular" badge.
In the Dexron grade, ACDELCO supplies 1 part: grouped under the catalog's "Dexron" designation — the notes column spells out what sets them apart. A representative part number is ACDELCO 109243.
In the Multi-Vehicle grade, VALVOLINE and LUCAS OIL supply 5 parts: grouped under the catalog's "Multi-Vehicle" designation — the notes column spells out what sets them apart. A representative part number is VALVOLINE VV3246.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Part numbers include ACDELCO 109243, VALVOLINE VV3246 and LUCAS OIL 11255, among others listed above.
Buying Drivetrain Parts for a 2020 Acura RLX
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Match the engine first. Some drivetrain parts fit every engine; others are 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 differential or transfer-case fluid with any axle or seal job while everything is already open.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Gear Oil and CV Intermediate Shaft .
Frequently Asked Questions
How many drivetrain parts fit the 2020 Acura RLX?
Our catalog currently lists 18 drivetrain parts for the 2020 Acura RLX across 6 subcategories and 9 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 drivetrain parts differ between 2020 Acura RLX engines?
Some do. 3 parts fit every engine; the other 15 are engine-specific. Each row (and the filter at the top) shows which. 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 drivetrain problems on a 2020 Acura RLX?
Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. 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 differential or transfer-case fluid with any axle or seal job while everything is already open.
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 2020 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 2020 Acura RLX?
First match the engine — each row shows which engine(s) the part fits. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2020 Acura RLX
Drivetrain Parts for Other Acura RLX Years
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