23 Drivetrain parts are listed for the 2021 Kia K5, in 5 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.
On the 2021 Kia K5, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. 20 parts of the 23 listed are CV Axle (16 parts), CV Intermediate Shaft (2 parts) and Gear Oil (2 parts). The other 2 part types cover the remaining 3 parts.
The 2021 Kia K5 was sold with both the 1.6L L4 Turbocharged and the 2.5L L4 Turbocharged. 1 part fits every engine; the other 22 are engine-specific. Each part shows which engine(s) it fits.
5 brands supply drivetrain parts for the 2021 Kia K5, led by TRAKMOTIVE (9 parts), GSP (5 parts) and TOP NOTCH (4 parts), plus 2 more brands.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Kia K5. 3 parts have it, including TOP NOTCH TN60345 (CV Axle) and TOP NOTCH TN60348 (CV Axle). Each part number opens a page with every vehicle that part fits.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TOP NOTCH Popular Fits: 1.6L L4 Turbocharged | TN60345 | 🇺🇸 US 🇨🇦 CA | Front RightAWD | View on Amazon |
| TOP NOTCH Popular Fits: 1.6L L4 Turbocharged | TN60348 | 🇺🇸 US 🇨🇦 CA | Front LeftAWD | View on Amazon |
| TOP NOTCH Popular Fits: 1.6L L4 Turbocharged | TN60338 | 🇺🇸 US 🇨🇦 CA | Fits Front RightFWD | View on Amazon |
| GSP Fits: 1.6L L4 Turbocharged | NCV75145 | 🇺🇸 US 🇨🇦 CA | Rear RightGT-Line or LXS Model | View on Amazon |
| GSP Fits: 1.6L L4 Turbocharged | NCV75146 | 🇺🇸 US 🇨🇦 CA | Front RightAWD | View on Amazon |
| GSP Fits: 1.6L L4 Turbocharged | NCV75156 | 🇺🇸 US 🇨🇦 CA | Rear LeftGT-Line or LXS Model | View on Amazon |
| GSP Fits: 1.6L L4 Turbocharged | NCV75147 | 🇺🇸 US 🇨🇦 CA | Front LeftAWD | View on Amazon |
| GSP Fits: 1.6L L4 Turbocharged | NCV71002K | 🇺🇸 US 🇨🇦 CA | Fits Front RightFWD | View on Amazon |
| TOP NOTCH Fits: 1.6L L4 Turbocharged | TN60344 | 🇺🇸 US 🇨🇦 CA | Rear RightGT-Line or LXS Model | View on Amazon |
| TRAKMOTIVE Fits: 1.6L L4 Turbocharged | KA86052 | 🇺🇸 US 🇨🇦 CA | Rear RightAWD | View on Amazon |
| TRAKMOTIVE Fits: 1.6L L4 Turbocharged | KA86023 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 1.6L L4 Turbocharged | KA86049 | 🇺🇸 US 🇨🇦 CA | Rear LeftAWD | View on Amazon |
| TRAKMOTIVE Fits: 1.6L L4 Turbocharged | KA86030 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 1.6L L4 Turbocharged | KA86025 | 🇺🇸 US | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 2.5L L4 Turbocharged | KA86032 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 2.5L L4 Turbocharged | KA86043 | 🇺🇸 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.
16 CV Axle parts are listed for the 2021 Kia K5, from TRAKMOTIVE, GSP and TOP NOTCH. TOP NOTCH TN60345 carries the "Popular" badge.
CV Intermediate Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TRAKMOTIVE Fits: 1.6L L4 Turbocharged | KA3514 | 🇺🇸 US 🇨🇦 CA | Front RightAWD | View on Amazon |
| TRAKMOTIVE Fits: all 2021 K5 engines | HY3555 | 🇺🇸 US 🇨🇦 CA | FrontFWD | View on Amazon |
This table covers the CV Intermediate shafts.
2 CV Intermediate Shaft parts for the 2021 Kia K5 come from TRAKMOTIVE. 1 part fits every engine; the other 1 is engine-specific.
This group includes TRAKMOTIVE KA3514 and TRAKMOTIVE HY3555.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Fits: 1.6L L4 Turbocharged | SL260471 | 🇺🇸 US 🇨🇦 CA | RearGT-Line or LXS 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 K5 — TIMKEN SL260471.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 1.6L L4 Turbocharged | 915052 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-85 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 1.6L L4 Turbocharged | 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.
VALVOLINE supplies both parts for the 2021 Kia K5.
Part numbers include VALVOLINE 915052 and VALVOLINE 915053.
Transfer Case Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 1.6L L4 Turbocharged | 915052 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-85 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 1.6L L4 Turbocharged | 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.
VALVOLINE supplies both parts for the 2021 Kia K5.
This group includes VALVOLINE 915052 and VALVOLINE 915053.
Buying Drivetrain Parts for a 2021 Kia K5
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 CV Intermediate Shaft .
Frequently Asked Questions
How many drivetrain parts fit the 2021 Kia K5?
Our catalog currently lists 23 drivetrain parts for the 2021 Kia K5 across 5 subcategories and 5 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 drivetrain parts differ between 2021 Kia K5 engines?
Some do. 1 part fits every engine; the other 22 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 K5?
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 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 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 K5
Drivetrain Parts for Other Kia K5 Years
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