The 2021 Kia Rio has 31 automatic transmission parts with verified fitment on this page — 9 part types and 12 brands, covering the 1.6L L4 engine. Each part includes a manufacturer part number and application notes.
The automatic transmission on the 2021 Kia Rio covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. The largest groups are Transmission Fluid (15 parts), Transmission Fluid Additive (7 parts) and Filter (2 parts). The other 6 part types cover the remaining 7 parts.
The 2021 Kia Rio came with a single engine, the 1.6L L4, and every part is verified against it.
12 brands supply automatic transmission parts for the 2021 Kia Rio, led by LUBEGARD (9 parts), VALVOLINE (6 parts) and DURA-BOND (4 parts), plus 9 more brands. Quality grades include CVT, Multi-Vehicle and Dual Clutch.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Kia Rio. 5 parts have it, including VALVOLINE 804751 (Transmission Fluid) and LUBEGARD 19610 (Transmission Fluid Additive). Each part number opens a page with every vehicle that part fits.
Bushing Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DURA-BOND | TK30 | 🇲🇽 MX | Automatic trans. | View on Amazon |
This table covers the Bushing kits.
One part is listed for the 2021 Kia Rio — DURA-BOND TK30.
Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR | PT99493 | 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RAYBESTOS POWERTRAIN | 515332 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans. | 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.
2 Filter parts are listed for the 2021 Kia Rio, from VARIOUS MFR and RAYBESTOS POWERTRAIN.
In the Economy grade, VARIOUS MFR supplies 1 part: the catalog's value-priced group. A representative part number is VARIOUS MFR PT99493.
The Standard Replacement section lists 1 option from RAYBESTOS POWERTRAIN — built to original-equipment specification. RAYBESTOS POWERTRAIN 515332 is listed in this group.
Listed part numbers: VARIOUS MFR PT99493 and RAYBESTOS POWERTRAIN 515332.
Fluid Pan
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SPECTRA PREMIUM | TP0105 | 🇺🇸 US 🇨🇦 CA | Automatic CVT trans. | View on Amazon |
This table covers the pans that hold automatic-transmission fluid.
This group shows a single part: SPECTRA PREMIUM TP0105.
Fluid Pump Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DURA-BOND | MIT21T | 🇲🇽 MX | Coated | View on Amazon |
This table covers the Fluid Pump bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
One part is listed for the 2021 Kia Rio — DURA-BOND MIT21T.
Shift Improvement Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TRANSGO | SKA6MF | 🇲🇽 MX | Shift KitFor A6MF 1-2, A6GF-1, A6LF-1-2-3, Dodge Dart 6F24 Transmissions | View on Amazon |
This table covers the Shift Improvement kits.
One part is listed for the 2021 Kia Rio — TRANSGO SKA6MF.
Sun Gear Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DURA-BOND | MIT24BR | 🇲🇽 MX | Bronze | View on Amazon |
| DURA-BOND | MIT25 | 🇲🇽 MX | Output Sun Gear (A6GF) | View on Amazon |
This table covers the Sun Gear bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
2 Sun Gear Bushing parts for the 2021 Kia Rio come from DURA-BOND.
Listed part numbers: DURA-BOND MIT24BR and DURA-BOND MIT25.
Transmission Fluid
CVT
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular | 804751 | 🇺🇸 US 🇨🇦 CA | Full Synthetic Continuously Variable Transmission Fluid1 Quart | View on Amazon |
| LUBEGARD | 68112 | 🇺🇸 US 🇨🇦 CA | Complete CVT Fluid32 oz | View on Amazon |
| LUCAS OIL | 10111 | 🇺🇸 US 🇨🇦 CA | SYNTHETIC MULTI- VEHICLE CVT FLUID1 qt | View on Amazon |
| LUCAS OIL | 10112 | 🇺🇸 US 🇨🇦 CA | Synthetic Multi- Vehicle CVT Fluid1 Gallon | View on Amazon |
| PENTOSIN | 1120107 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | CVT11 Liter | View on Amazon |
| VALVOLINE | 876133 | 🇺🇸 US 🇨🇦 CA | Full Synthetic Continuously Variable Transmission Fluid1 Gallon | View on Amazon |
| VALVOLINE | 881056 | 🇺🇸 US 🇨🇦 CA | Full Synthetic Continuously Variable Transmission Fluid5 Gallon Bay Box | View on Amazon |
Dual Clutch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PENTOSIN | 1052208 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | FFL320 Liters | View on Amazon |
Multi-Vehicle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular | VV3246 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Quart | View on Amazon |
| VALVOLINE Popular | 773775 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Gallon | View on Amazon |
| LIQUI MOLY | 20036 | 🇺🇸 US 🇨🇦 CA | Top Tec ATF 14001 Liter | View on Amazon |
| LIQUI MOLY | 20121 | 🇺🇸 US 🇨🇦 CA | Top Tec ATF 140020 Liter | View on Amazon |
| LUBEGARD | 69032 | 🇲🇽 MX | 1 QuartComplete Full Synthetic ATF Fluid | View on Amazon |
| VALVOLINE | 881051 | 🇺🇸 US 🇨🇦 CA | Maxlife Multi-Vehicle Full Synthetic ATF5 Gallon Bay Box | View on Amazon |
SP-IV (SP 4)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| IDEMITSU | 30040100750 | 🇺🇸 US | ATF Type HK41 Quart | View on Amazon |
This table covers the automatic-transmission fluids specified for this gearbox. Typical signs include harsh or delayed shifts, fluid that smells burnt, or a shudder at light throttle. Use exactly the specification in the notes. Automatic transmissions are unforgiving of the wrong fluid.
15 Transmission Fluid parts are listed for the 2021 Kia Rio, from VALVOLINE, LUBEGARD, LUCAS OIL and 3 other brands. VALVOLINE 804751 carries the "Popular" badge.
The CVT section lists 7 options from VALVOLINE, LUCAS OIL, LUBEGARD and 1 other brand — grouped under the catalog's "CVT" designation — the notes column spells out what sets them apart. VALVOLINE 804751 is listed in this group.
The Dual Clutch section lists 1 option from PENTOSIN — grouped under the catalog's "Dual Clutch" designation — the notes column spells out what sets them apart. PENTOSIN 1052208 is listed in this group.
In the Multi-Vehicle grade, VALVOLINE, LIQUI MOLY and LUBEGARD supply 6 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.
The SP-IV (SP 4) section lists 1 option from IDEMITSU — grouped under the catalog's "SP-IV (SP 4)" designation — the notes column spells out what sets them apart. IDEMITSU 30040100750 is listed in this group.
Transmission Fluid Additive
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LUBEGARD Popular | 19610 | 🇲🇽 MX | Instant Shudder Fixx2 oz | View on Amazon |
| LUBEGARD Popular | 60902 | 🇲🇽 MX | Automatic Transmission Fluid Protectant10 oz | View on Amazon |
| LUBEGARD | 61910 | 🇲🇽 MX | 10 ozHighly Friction Modified ATF Supplement | View on Amazon |
| LUBEGARD | 63010 | 🇲🇽 MX | Platinum Universal ATF Protectant10 oz | View on Amazon |
| LUBEGARD | 63016 | 🇲🇽 MX | Platinum Universal ATF Protectant15 oz | View on Amazon |
| LUBEGARD | 67010 | 🇺🇸 US 🇨🇦 CA | Continuously Variable Transmission Recharge & Protect10 oz | View on Amazon |
| LUBEGARD | 63032 | 🇲🇽 MX | Platinum Universal ATF Protectant32 oz | View on Amazon |
This table covers the conditioners and additives used with this transmission fluid.
LUBEGARD supplies the 7 Transmission Fluid Additive parts for the 2021 Kia Rio. LUBEGARD 19610 carries the "Popular" badge.
Listed part numbers: LUBEGARD 19610, LUBEGARD 60902 and LUBEGARD 61910, plus the other parts above.
Transmission Mount
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ANCHOR | 10034 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LeftAutomatic CVT trans. or Automatic trans. | 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.
This group shows a single part: ANCHOR 10034.
Buying Automatic Transmission Parts for a 2021 Kia Rio
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 1.6L 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: Transmission Fluid and Transmission Fluid Additive .
Frequently Asked Questions
How many automatic transmission parts fit the 2021 Kia Rio?
Our catalog currently lists 31 automatic transmission parts for the 2021 Kia Rio across 9 subcategories and 12 brands, covering the 1.6L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of automatic transmission problems on a 2021 Kia Rio?
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 Kia Rio 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 Kia Rio?
Every part on this page is matched to the 1.6L 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 Kia Rio
Automatic Transmission Parts for Other Kia Rio Years
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