13 Automatic transmission parts are listed for the 2021 Acura RDX, in 4 part types, covering the 2.0L L4 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 Acura RDX, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. Most of the listed parts are Transmission Fluid Additive (6 parts), Filter (3 parts) and Transmission Mount (3 parts). The other 1 part type covers the remaining 1 part.
Every part on this page is matched to the 2.0L L4 Turbocharged — the only engine offered in the 2021 Acura RDX.
The most listed brands for 2021 Acura RDX automatic transmission parts are LUBEGARD (6 parts), DORMAN (1 part) and VARIOUS MFR (1 part), plus 5 more brands. Quality grades include Standard Replacement and Economy.
2 parts on this 2021 Acura RDX page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including LUBEGARD 19610 (Transmission Fluid Additive) and LUBEGARD 60902 (Transmission Fluid Additive). Click any part number to see every vehicle that part fits.
Drain Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 652530CD | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 20 MMAluminum | View on Amazon |
This table covers the gaskets that seal the Drain Plug. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
One part is listed for the 2021 Acura RDX — DORMAN 652530CD.
Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR | PT99442 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cartridge Filter | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 0440383 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cartridge Type | View on Amazon |
| HASTINGS / BALDWIN | TF215 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cartridge Filter | View on Amazon |
This table covers the replacement filters for this application — the table heading and notes say which circuit. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for.
3 Filter parts for the 2021 Acura RDX come from 3 brands — VARIOUS MFR, BECK/ARNLEY and HASTINGS / BALDWIN.
The Economy section lists 1 option from VARIOUS MFR — the catalog's value-priced group. VARIOUS MFR PT99442 is listed in this group.
In the Standard Replacement grade, BECK/ARNLEY and HASTINGS / BALDWIN supply 2 parts: built to original-equipment specification. A representative part number is BECK/ARNLEY 0440383.
Part numbers include VARIOUS MFR PT99442, BECK/ARNLEY 0440383 and HASTINGS / BALDWIN TF215.
Transmission Fluid Additive
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LUBEGARD Popular | 19610 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Instant Shudder Fixx2 oz | View on Amazon |
| LUBEGARD Popular | 60902 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Automatic Transmission Fluid Protectant10 oz | View on Amazon |
| LUBEGARD | 63010 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum Universal ATF Protectant10 oz | View on Amazon |
| LUBEGARD | 63016 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum Universal ATF Protectant15 oz | View on Amazon |
| LUBEGARD | 63032 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum Universal ATF Protectant32 oz | View on Amazon |
| LUBEGARD | 19689 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Instant Shudder Fixx2 oz | View on Amazon |
This table covers the conditioners and additives used with this transmission fluid.
6 Transmission Fluid Additive parts for the 2021 Acura RDX come from LUBEGARD. The "Popular" part is LUBEGARD 19610.
This group includes LUBEGARD 19610, LUBEGARD 60902 and LUBEGARD 63010 and the remaining parts above.
Transmission Mount
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ANCHOR | 10280 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LeftHydraulic | View on Amazon |
| DEA / MARMON RIDE CONTROL | A65161 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Left | View on Amazon |
| WESTAR | EM7673 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the mounts that hold the transmission to the chassis. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes.
3 Transmission Mount parts are listed for the 2021 Acura RDX, from ANCHOR, DEA / MARMON RIDE CONTROL and WESTAR.
Part numbers include ANCHOR 10280, DEA / MARMON RIDE CONTROL A65161 and WESTAR EM7673.
Buying Automatic Transmission Parts for a 2021 Acura RDX
On this vehicle, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts.
- Confirm you have the 2.0L L4 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 filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Transmission Fluid Additive and Filter .
Frequently Asked Questions
How many automatic transmission parts fit the 2021 Acura RDX?
Our catalog currently lists 13 automatic transmission parts for the 2021 Acura RDX across 4 subcategories and 8 brands, covering the 2.0L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of automatic transmission problems on a 2021 Acura RDX?
Common symptoms include delayed or harsh engagement, slipping under load, fluid that smells burnt, or shuddering at light throttle around 40 mph. 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 filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
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 2021 Acura RDX 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 2021 Acura RDX?
Every part on this page is matched to the 2.0L L4 Turbocharged engine. Then use exactly the fluid specification in the notes — automatic transmissions are the least forgiving component on the vehicle about fluid choice. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Acura RDX
Automatic Transmission Parts for Other Acura RDX Years
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