The 2021 Acura Ilx has 12 automatic transmission parts with verified fitment on this page — 4 part types and 5 brands, covering the 2.4L L4 engine. Each part includes a manufacturer part number and application notes.
On the 2021 Acura Ilx, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. 11 parts of the 12 listed are Filter (5 parts), Transmission Fluid Additive (5 parts) and Drain Plug Gasket (1 part). The other 1 part type covers the remaining 1 part.
The 2021 Acura Ilx came with a single engine, the 2.4L L4, and every part is verified against it.
5 brands supply automatic transmission parts for the 2021 Acura Ilx, led by LUBEGARD (5 parts), BECK/ARNLEY (3 parts) and VARIOUS MFR (2 parts), plus 2 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Acura Ilx. 2 parts have it, including BECK/ARNLEY 0440424 (Filter) and LUBEGARD 63010 (Transmission Fluid Additive). Each part number opens a page with every vehicle that part fits.
Drain Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 652530CD | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: DORMAN 652530CD.
Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR | PT99563 | 🇺🇸 US 🇨🇦 CA | Cartridge Filter | View on Amazon |
| VARIOUS MFR | PT99803 | 🇺🇸 US 🇨🇦 CA | Internal | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Popular | 0440424 | 🇺🇸 US 🇨🇦 CA | Cartridge | View on Amazon |
| BECK/ARNLEY | 0440420 | 🇺🇸 US 🇨🇦 CA | Internal Filter | View on Amazon |
| VAICO | V269617 | 🇺🇸 US 🇨🇦 CA | 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.
5 Filter parts are listed for the 2021 Acura Ilx, from VARIOUS MFR, BECK/ARNLEY and VAICO. BECK/ARNLEY 0440424 carries the "Popular" badge.
In the Economy grade, VARIOUS MFR supplies 2 parts: the catalog's value-priced group. A representative part number is VARIOUS MFR PT99563.
The Standard Replacement section lists 3 options from BECK/ARNLEY and VAICO — built to original-equipment specification. BECK/ARNLEY 0440424 is listed in this group.
Listed part numbers: BECK/ARNLEY 0440424, VARIOUS MFR PT99563 and VARIOUS MFR PT99803, plus the other parts above.
Fluid Temperature Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 1581807 | 🇺🇸 US 🇨🇦 CA | OIL TEMPERATURE | View on Amazon |
This table covers the Fluid temperature sensors. Typical signs include hard cold starts, a fan that never comes on, or a gauge that disagrees with the scan tool. A sensor that reads open or shorted is usually the part; an implausible-but-smooth reading can be wiring.
One part is listed for the 2021 Acura Ilx — BECK/ARNLEY 1581807.
Transmission Fluid Additive
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LUBEGARD Popular | 63010 | 🇺🇸 US 🇨🇦 CA | Platinum Universal ATF Protectant10 oz | View on Amazon |
| LUBEGARD | 63016 | 🇺🇸 US 🇨🇦 CA | Platinum Universal ATF Protectant15 oz | View on Amazon |
| LUBEGARD | 63032 | 🇺🇸 US 🇨🇦 CA | Platinum Universal ATF Protectant32 oz | View on Amazon |
| LUBEGARD | 63015 | 🇺🇸 US 🇨🇦 CA | Platinum Universal ATF Protectant5 Gallon | View on Amazon |
| LUBEGARD | 63055 | 🇺🇸 US 🇨🇦 CA | Platinum Universal ATF Protectant55 Gallon | View on Amazon |
This table covers the conditioners and additives used with this transmission fluid.
LUBEGARD supplies the 5 Transmission Fluid Additive parts for the 2021 Acura Ilx. LUBEGARD 63010 carries the "Popular" badge.
Listed part numbers: LUBEGARD 63010, LUBEGARD 63016 and LUBEGARD 63032, plus the other parts above.
Buying Automatic Transmission Parts for a 2021 Acura Ilx
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 2.4L L4 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: Filter and Transmission Fluid Additive .
Frequently Asked Questions
How many automatic transmission parts fit the 2021 Acura Ilx?
Our catalog currently lists 12 automatic transmission parts for the 2021 Acura Ilx across 4 subcategories and 5 brands, covering the 2.4L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of automatic transmission problems on a 2021 Acura Ilx?
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 Ilx 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 Ilx?
Every part on this page is matched to the 2.4L L4 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 Ilx
Automatic Transmission Parts for Other Acura Ilx 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.