28 Automatic transmission parts are listed for the 2021 Kia K5, in 7 part types, covering both the 1.6L L4 Turbocharged and the 2.5L L4 Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
The automatic transmission on the 2021 Kia K5 covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. The largest groups are Transmission Fluid (14 parts), Transmission Fluid Additive (7 parts) and Output Shaft Seal (2 parts). The other 4 part types cover the remaining 5 parts.
The 2021 Kia K5 was sold with both the 1.6L L4 Turbocharged and the 2.5L L4 Turbocharged. 3 parts fit every engine; the other 25 are engine-specific. Each part shows which engine(s) it fits.
13 brands supply automatic transmission parts for the 2021 Kia K5, led by LUBEGARD (8 parts), VALVOLINE (4 parts) and LIQUI MOLY (3 parts), plus 10 more brands. Quality grades include Multi-Vehicle, SP-IV and ZF Fluid.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Kia K5. 5 parts have it, including MOBIL 126505 (Transmission Fluid) and LUBEGARD 19610 (Transmission Fluid Additive). Each part number opens a page with every vehicle that part fits.
Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RAYBESTOS POWERTRAIN Fits: 1.6L L4 Turbocharged | 515330 | 🇺🇸 US 🇨🇦 CA | .965" Inlet | 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.
One part is listed for the 2021 Kia K5 — RAYBESTOS POWERTRAIN 515330.
Fluid Cooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 1.6L L4 Turbocharged | 918572 | 🇺🇸 US 🇨🇦 CA | At Transmission | View on Amazon |
This table covers the heat exchangers that cool transmission fluid. Typical signs include fluid that overheats, a leak at the cooler fittings, or milky fluid that says coolant and ATF have mixed. Flush the lines when you replace a cooler. Cross-contamination is how a small leak becomes a transmission job.
One part is listed for the 2021 Kia K5 — DORMAN 918572.
Output Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HYUNDAI Fits: 1.6L L4 Turbocharged | 452453B810 | 🇺🇸 US 🇨🇦 CA | Right | View on Amazon |
| HYUNDAI Fits: 1.6L L4 Turbocharged | 452453B411 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
This table covers the seals at the Output Shaft. 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.
HYUNDAI supplies both parts for the 2021 Kia K5.
Part numbers include HYUNDAI 452453B810 and HYUNDAI 452453B411.
Shift Solenoid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACKOJA Fits: 1.6L L4 Turbocharged | A52770022 | 🇺🇸 US 🇨🇦 CA | Fits From 01/04/2020 | View on Amazon |
This table covers the Shift solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid.
This group shows a single part: ACKOJA A52770022.
Transmission Fluid
ATF 64
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PENTOSIN Fits: 1.6L L4 Turbocharged | 1058113 | 🇺🇸 US 🇨🇦 CA | 1 LiterATF64 or ATF44 | View on Amazon |
| PENTOSIN Fits: 1.6L L4 Turbocharged | 1058215 | 🇺🇸 US 🇨🇦 CA | 5 LitersATF64 or ATF44 | View on Amazon |
Multi-Vehicle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL Popular Fits: 1.6L L4 Turbocharged | 126505 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle ATF | View on Amazon |
| VALVOLINE Popular Fits: 1.6L L4 Turbocharged | VV3246 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Quart | View on Amazon |
| VALVOLINE Popular Fits: 1.6L L4 Turbocharged | 773775 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Gallon | View on Amazon |
| LIQUI MOLY Fits: 1.6L L4 Turbocharged | 20032 | 🇺🇸 US 🇨🇦 CA | Top Tec ATF 18001 Liter | View on Amazon |
| LIQUI MOLY Fits: 1.6L L4 Turbocharged | 22036 | 🇺🇸 US 🇨🇦 CA | Top Tec ATF 18005 Liter | View on Amazon |
| LIQUI MOLY Fits: 1.6L L4 Turbocharged | 20034 | 🇺🇸 US 🇨🇦 CA | Top TEC ATF 180020 Liter | View on Amazon |
| LUBEGARD Fits: 1.6L L4 Turbocharged | 69032 | 🇺🇸 US 🇨🇦 CA | 1 QuartComplete Full Synthetic ATF Fluid | View on Amazon |
| VALVOLINE Fits: 1.6L L4 Turbocharged | 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 Fits: 1.6L L4 Turbocharged | 30040100750 | 🇺🇸 US | ATF Type HK41 Quart | View on Amazon |
ZF Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ZF Fits: 1.6L L4 Turbocharged | 5961308625 | 🇺🇸 US | Includes: 1 L Bottle | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| IDEMITSU Fits: 2.5L L4 Turbocharged | 30040100750 | 🇺🇸 US | ATF Type HK41 Quart | View on Amazon |
| VALVOLINE Fits: 1.6L L4 Turbocharged | 899179 | 🇺🇸 US 🇨🇦 CA | Extended Protection Full Synthetic ATF1 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.
14 Transmission Fluid parts are listed for the 2021 Kia K5, from VALVOLINE, LIQUI MOLY, PENTOSIN and 4 other brands. MOBIL 126505 carries the "Popular" badge.
The ATF 64 section lists 2 options from PENTOSIN — grouped under the catalog's "ATF 64" designation — the notes column spells out what sets them apart. PENTOSIN 1058113 is listed in this group.
In the Multi-Vehicle grade, VALVOLINE, LIQUI MOLY, MOBIL and 1 other brand supply 8 parts: grouped under the catalog's "Multi-Vehicle" designation — the notes column spells out what sets them apart. A representative part number is MOBIL 126505.
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.
In the ZF Fluid grade, ZF supplies 1 part: grouped under the catalog's "ZF Fluid" designation — the notes column spells out what sets them apart. A representative part number is ZF 5961308625.
2 ungrouped parts are not assigned to a grade, with the same engine-level match.
Transmission Fluid Additive
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LUBEGARD Popular Fits: 1.6L L4 Turbocharged | 19610 | 🇺🇸 US 🇨🇦 CA | Instant Shudder Fixx2 oz | View on Amazon |
| LUBEGARD Popular Fits: all 2021 K5 engines | 63010 | 🇺🇸 US 🇨🇦 CA | Platinum Universal ATF Protectant10 oz | View on Amazon |
| LUBEGARD Fits: 1.6L L4 Turbocharged | 60902 | 🇺🇸 US 🇨🇦 CA | Automatic Transmission Fluid Protectant10 oz | View on Amazon |
| LUBEGARD Fits: all 2021 K5 engines | 63016 | 🇺🇸 US 🇨🇦 CA | Platinum Universal ATF Protectant15 oz | View on Amazon |
| LUBEGARD Fits: all 2021 K5 engines | 63032 | 🇺🇸 US 🇨🇦 CA | Platinum Universal ATF Protectant32 oz | View on Amazon |
| LUBEGARD Fits: 2.5L L4 Turbocharged | 63015 | 🇺🇸 US 🇨🇦 CA | Platinum Universal ATF Protectant5 Gallon | View on Amazon |
| LUBEGARD Fits: 2.5L L4 Turbocharged | 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 7 Transmission Fluid Additive parts for the 2021 Kia K5. LUBEGARD 19610 carries the "Popular" badge. 3 parts fit every engine; the other 4 are engine-specific.
This group includes LUBEGARD 19610, LUBEGARD 63010 and LUBEGARD 60902 and the remaining parts above.
Transmission Mount
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ANCHOR Fits: 1.6L L4 Turbocharged | 10262 | 🇺🇸 US | LeftFWD | View on Amazon |
| WESTAR Fits: 1.6L L4 Turbocharged | EM7642 | 🇺🇸 US 🇨🇦 CA | 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.
2 Transmission Mount parts for the 2021 Kia K5 come from 2 brands — ANCHOR and WESTAR.
This group includes ANCHOR 10262 and WESTAR EM7642.
Buying Automatic Transmission Parts for a 2021 Kia K5
On this vehicle, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts.
- Match the engine first. Some automatic transmission 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 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 K5?
Our catalog currently lists 28 automatic transmission parts for the 2021 Kia K5 across 7 subcategories and 13 brands, covering both the 1.6L L4 Turbocharged and the 2.5L L4 Turbocharged. Each part is matched to the engine(s) it fits.
Do automatic transmission parts differ between 2021 Kia K5 engines?
Some do. 3 parts fit every engine; the other 25 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 automatic transmission problems on a 2021 Kia K5?
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 K5 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 K5?
First match the engine — each row shows which engine(s) the part fits. 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 K5
Automatic Transmission Parts for Other Kia K5 Years
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