27 Automatic transmission parts are listed for the 2025 Kia K4, in 3 part types, covering both the 1.6L L4 Turbocharged and the 2.0L L4. Each one has a brand, a manufacturer part number and notes that say where it fits.
The automatic transmission on the 2025 Kia K4 covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. All 27 listed parts are Transmission Fluid (17 parts), Transmission Fluid Additive (9 parts) and Filter (1 part).
The 2025 Kia K4 was sold with both the 1.6L L4 Turbocharged and the 2.0L L4. 13 parts fit every engine; the other 14 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2025 Kia K4 automatic transmission parts are LUBEGARD (10 parts), VALVOLINE (7 parts) and LIQUI MOLY (5 parts), plus 3 more brands. Quality grades include Multi-Vehicle, CVT and SP-IV.
5 parts on this 2025 Kia K4 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including LIQUI MOLY 20032 (Transmission Fluid) and LUBEGARD 19610 (Transmission Fluid Additive). Click any part number to see every vehicle that part fits.
Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR Fits: 1.6L L4 Turbocharged | PT99551 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Trans. code A8MF1 | 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.
This group shows a single part: VARIOUS MFR PT99551.
Transmission Fluid
ATF 64
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PENTOSIN Fits: 1.6L L4 Turbocharged | 1058113 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 1 LiterATF64 or ATF44 | View on Amazon |
| PENTOSIN Fits: 1.6L L4 Turbocharged | 1058215 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 5 LitersATF64 or ATF44 | View on Amazon |
CVT
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LUBEGARD Fits: all 2025 K4 engines | 68112 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Complete CVT Fluid32 oz | View on Amazon |
| PENTOSIN Fits: 2.0L L4 | 1120107 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | CVT11 Liter | View on Amazon |
| VALVOLINE Fits: 2.0L L4 | 804751 | 🇺🇸 US 🇨🇦 CA | Full Synthetic Continuously Variable Transmission Fluid1 Quart | View on Amazon |
| VALVOLINE Fits: 2.0L L4 | 876133 | 🇺🇸 US 🇨🇦 CA | Full Synthetic Continuously Variable Transmission Fluid1 Gallon | View on Amazon |
| VALVOLINE Fits: 2.0L L4 | 881056 | 🇺🇸 US 🇨🇦 CA | Full Synthetic Continuously Variable Transmission Fluid5 Gallon Bay Box | View on Amazon |
Multi-Vehicle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LIQUI MOLY Popular Fits: 1.6L L4 Turbocharged | 20032 | 🇺🇸 US 🇨🇦 CA | Top Tec ATF 18001 Liter | View on Amazon |
| VALVOLINE Popular Fits: all 2025 K4 engines | VV3246 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Quart | View on Amazon |
| VALVOLINE Popular Fits: all 2025 K4 engines | 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 | 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 |
| LIQUI MOLY Fits: 2.0L L4 | 20036 | 🇺🇸 US 🇨🇦 CA | Top Tec ATF 14001 Liter | View on Amazon |
| LIQUI MOLY Fits: 2.0L L4 | 20121 | 🇺🇸 US 🇨🇦 CA | Top Tec ATF 140020 Liter | View on Amazon |
| VALVOLINE Fits: all 2025 K4 engines | 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 |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| 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.
17 Transmission Fluid parts for the 2025 Kia K4 come from 5 brands — VALVOLINE, LIQUI MOLY, PENTOSIN and 2 other brands. The "Popular" part is LIQUI MOLY 20032. 4 parts fit every engine; the other 13 are engine-specific.
In the ATF 64 grade, PENTOSIN supplies 2 parts: grouped under the catalog's "ATF 64" designation — the notes column spells out what sets them apart. A representative part number is PENTOSIN 1058113.
In the CVT grade, VALVOLINE, LUBEGARD and PENTOSIN supply 5 parts: grouped under the catalog's "CVT" designation — the notes column spells out what sets them apart. A representative part number is LUBEGARD 68112.
The Multi-Vehicle section lists 8 options from LIQUI MOLY and VALVOLINE — grouped under the catalog's "Multi-Vehicle" designation — the notes column spells out what sets them apart. LIQUI MOLY 20032 is listed in this group.
In the SP-IV (SP 4) grade, IDEMITSU supplies 1 part: grouped under the catalog's "SP-IV (SP 4)" designation — the notes column spells out what sets them apart. A representative part number is IDEMITSU 30040100750.
1 further part sits outside the graded sections, with the same engine-level match.
Transmission Fluid Additive
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LUBEGARD Popular Fits: all 2025 K4 engines | 19610 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Instant Shudder Fixx2 oz | View on Amazon |
| LUBEGARD Popular Fits: all 2025 K4 engines | 60902 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Automatic Transmission Fluid Protectant10 oz | View on Amazon |
| LUBEGARD Fits: all 2025 K4 engines | 19689 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Instant Shudder Fixx2 oz | View on Amazon |
| LUBEGARD Fits: all 2025 K4 engines | 67010 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Continuously Variable Transmission Recharge & Protect10 oz | View on Amazon |
| LUBEGARD Fits: all 2025 K4 engines | 19680 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Instant Shudder Fixx2 oz, clam shell | View on Amazon |
| LUBEGARD Fits: all 2025 K4 engines | 19688 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Instant Shudder Fixx2 oz, Spanish | View on Amazon |
| LUBEGARD Fits: all 2025 K4 engines | 50902 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Automatic Transmission Fluid Protectant32 oz | View on Amazon |
| LUBEGARD Fits: all 2025 K4 engines | 50904 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Automatic Transmission Fluid Protectant5 Gallon | View on Amazon |
| LUBEGARD Fits: all 2025 K4 engines | 50905 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Automatic Transmission Fluid Protectant55 Gallon | View on Amazon |
This table covers the conditioners and additives used with this transmission fluid.
9 Transmission Fluid Additive parts for the 2025 Kia K4 come from LUBEGARD. The "Popular" part is LUBEGARD 19610. Every part fits both the 1.6L L4 Turbocharged and the 2.0L L4.
This group includes LUBEGARD 19610, LUBEGARD 60902 and LUBEGARD 19689 and the remaining parts above.
Buying Automatic Transmission Parts for a 2025 Kia K4
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 2025 Kia K4?
Our catalog currently lists 27 automatic transmission parts for the 2025 Kia K4 across 3 subcategories and 6 brands, covering both the 1.6L L4 Turbocharged and the 2.0L L4. Each part is matched to the engine(s) it fits.
Do automatic transmission parts differ between 2025 Kia K4 engines?
Some do. 13 parts fit every engine; the other 14 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 2025 Kia K4?
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 2025 Kia K4 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 2025 Kia K4?
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 2025 Kia K4
Automatic Transmission Parts for Other Kia K4 Years
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