The 2021 Kia Seltos has 26 drivetrain parts with verified fitment on this page — 7 part types and 7 brands, covering all 4 engine options (1.4L L4 Turbocharged, 1.6L L4, 1.6L L4 Turbocharged and 2.0L L4). Each part includes a manufacturer part number and application notes.
On the 2021 Kia Seltos, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. 21 parts of the 26 listed are CV Axle (15 parts), Gear Oil (3 parts) and Transfer Case Fluid (3 parts). The other 4 part types cover the remaining 5 parts.
The 2021 Kia Seltos was sold with 4 engines. 3 parts fit every engine; the other 23 are engine-specific. Each part shows which engine(s) it fits.
7 brands supply drivetrain parts for the 2021 Kia Seltos, led by TRAKMOTIVE (8 parts), GSP (5 parts) and TOP NOTCH (4 parts), plus 4 more brands.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Kia Seltos. 4 parts have it, including GSP NCV75140 (CV Axle) and TOP NOTCH TN60372 (CV Axle). Each part number opens a page with every vehicle that part fits.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Fits: all 2021 Seltos engines | SL260463 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
This table covers the seals where an axle shaft exits the housing. 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.
One part is listed for the 2021 Kia Seltos — TIMKEN SL260463.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GSP Popular Fits: all 2021 Seltos engines | NCV75140 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Extended Length: 23.59 In | View on Amazon |
| TOP NOTCH Popular Fits: 1.6L L4, 1.6L L4 Turbocharged | TN60372 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| TOP NOTCH Popular Fits: 2.0L L4 | TN60301 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| TRAKMOTIVE Popular Fits: 2.0L L4 | KA86046 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| GSP Fits: 1.6L L4, 1.6L L4 Turbocharged | NCV75155 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Extended Length: 25.71 In | View on Amazon |
| GSP Fits: 1.6L L4, 1.6L L4 Turbocharged | NCV75154 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| GSP Fits: 2.0L L4 | NCV75139 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| GSP Fits: 2.0L L4 | NCV75159 | 🇺🇸 US 🇨🇦 CA | Front RightAWD | View on Amazon |
| TOP NOTCH Fits: all 2021 Seltos engines | TN60302 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| TOP NOTCH Fits: 1.6L L4, 1.6L L4 Turbocharged | TN60371 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| TRAKMOTIVE Fits: 1.6L L4 Turbocharged | KA86045 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 1.6L L4 Turbocharged | KA86037 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 2.0L L4 | KA86055 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 2.0L L4 | KA86062 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 2.0L L4 | KA86036 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
This table covers the complete CV axle shafts from differential (or hub) to wheel. Typical signs include a click in tight turns, grease flung around the wheel well, or a vibration that builds with speed. A torn boot caught early is a boot kit; caught late it is the whole axle. Torque the axle nut to the method in the notes.
15 CV Axle parts are listed for the 2021 Kia Seltos, from TRAKMOTIVE, GSP and TOP NOTCH. GSP NCV75140 carries the "Popular" badge. 2 parts fit every engine; the other 13 are engine-specific.
CV Intermediate Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TRAKMOTIVE Fits: 1.6L L4 Turbocharged | KA3522 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| TRAKMOTIVE Fits: 2.0L L4 | KA3519 | 🇺🇸 US 🇨🇦 CA | FrontAutomatic CVT trans. | View on Amazon |
This table covers the CV Intermediate shafts.
2 CV Intermediate Shaft parts for the 2021 Kia Seltos come from TRAKMOTIVE.
Listed part numbers: TRAKMOTIVE KA3522 and TRAKMOTIVE KA3519.
Differential Lock Actuator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAE Fits: 1.6L L4, 1.6L L4 Turbocharged, 2.0L L4 | DLA0100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Differential Lock actuators. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same.
One part is listed for the 2021 Kia Seltos — AAE DLA0100.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Fits: 1.6L L4, 1.6L L4 Turbocharged, 2.0L L4 | SL260471 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearEX Model | View on Amazon |
This table covers the seals at the differential pinion yoke. 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.
One part is listed for the 2021 Kia Seltos — TIMKEN SL260471.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| IDEMITSU Fits: 2.0L L4 | 30305024750 | 🇺🇸 US | 75W90 Racing Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 1.6L L4 Turbocharged, 2.0L L4 | 915052 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-85 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 1.6L L4 Turbocharged, 2.0L L4 | 915053 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-85 Gear Oil1 Quart Flex Fill | View on Amazon |
This table covers the gear oils specified for the axle or transfer case. Typical signs include a low-oil lamp, knocking, or oil that has gone thin before the next interval. Match the viscosity and spec in the notes, not just the weight on the bottle.
3 Gear Oil parts are listed for the 2021 Kia Seltos, from VALVOLINE and IDEMITSU.
This group includes IDEMITSU 30305024750, VALVOLINE 915052 and VALVOLINE 915053.
Transfer Case Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| IDEMITSU Fits: 2.0L L4 | 30305024750 | 🇺🇸 US | 75W90 Racing Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 1.6L L4 Turbocharged, 2.0L L4 | 915052 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-85 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 1.6L L4 Turbocharged, 2.0L L4 | 915053 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-85 Gear Oil1 Quart Flex Fill | View on Amazon |
This table covers the fluids specified for the transfer case. Typical signs include discolored fluid, a burnt smell, or a level that keeps dropping. Use only the specification in the notes — the tables group grades because they are not interchangeable.
3 Transfer Case Fluid parts are listed for the 2021 Kia Seltos, from VALVOLINE and IDEMITSU.
This group includes IDEMITSU 30305024750, VALVOLINE 915052 and VALVOLINE 915053.
Buying Drivetrain Parts for a 2021 Kia Seltos
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Match the engine first. Some drivetrain 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 differential or transfer-case fluid with any axle or seal job while everything is already open.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: CV Axle and Gear Oil .
Frequently Asked Questions
How many drivetrain parts fit the 2021 Kia Seltos?
Our catalog currently lists 26 drivetrain parts for the 2021 Kia Seltos across 7 subcategories and 7 brands, covering all 4 engine options (1.4L L4 Turbocharged, 1.6L L4, 1.6L L4 Turbocharged and 2.0L L4). Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2021 Kia Seltos engines?
Some do. 3 parts fit every engine; the other 23 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 drivetrain problems on a 2021 Kia Seltos?
Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. 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 differential or transfer-case fluid with any axle or seal job while everything is already open.
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 Seltos 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 Seltos?
First match the engine — each row shows which engine(s) the part fits. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Kia Seltos
Drivetrain Parts for Other Kia Seltos 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.