The 2001 Kia Optima has 29 drivetrain parts with verified fitment on this page — 4 part types and 17 brands, covering both the 2.4L L4 and the 2.5L V6. Each part includes a manufacturer part number and application notes.
The drivetrain system on the 2001 Kia Optima moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are CV Axle (16 parts), Differential Carrier Bearing / Race (11 parts) and CV Joint Boot (1 part). The other 1 part type covers the remaining 1 part.
The 2001 Kia Optima was sold with both the 2.4L L4 and the 2.5L V6. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
17 brands supply drivetrain parts for the 2001 Kia Optima, led by CARDONE (4 parts), AUTO EXTRA (2 parts) and FAMOUS BRAND (2 parts), plus 14 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2001 Kia Optima. 7 parts have it, including APWI IZ8360A (CV Axle) and ACDELCO A35 (Differential Carrier Bearing / Race). Each part number opens a page with every vehicle that part fits.
CV Axle
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTO EXTRA Fits: 2.5L V6 | HY88529A | 🇺🇸 US 🇨🇦 CA | Front Leftwith Auto Trans | View on Amazon |
| AUTO EXTRA Fits: 2.5L V6 | HY88564A | 🇺🇸 US 🇨🇦 CA | RightFront | View on Amazon |
| CARDONE Fits: 2.5L V6 | 603406 | 🇺🇸 US | Remanufactured | View on Amazon |
| CARDONE Fits: 2.5L V6 | 603407 | 🇺🇸 US | Remanufactured | View on Amazon |
| FAMOUS BRAND Fits: 2.5L V6 | NCV75521 | 🇺🇸 US 🇨🇦 CA | LeftFront | View on Amazon |
| FAMOUS BRAND Fits: 2.5L V6 | NCV75522 | 🇺🇸 US 🇨🇦 CA | RightFront | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APWI Popular Fits: 2.5L V6 | IZ8360A | 🇺🇸 US | Front Left | View on Amazon |
| TOP NOTCH Popular Fits: 2.5L V6 | TN60193 | 🇺🇸 US | Front Left | View on Amazon |
| TOP NOTCH Popular Fits: 2.5L V6 | TN60194 | 🇺🇸 US | Front Right | View on Amazon |
| TRAKMOTIVE Popular Fits: 2.5L V6 | HY8027 | 🇺🇸 US | Front Right | View on Amazon |
| APWI Fits: 2.5L V6 | IZ8361A | 🇺🇸 US | Front Right | View on Amazon |
| CARDONE Fits: 2.5L V6 | 663407 | 🇺🇸 US | Front Right | View on Amazon |
| CARDONE Fits: 2.5L V6 | 663406 | 🇺🇸 US | Front Left | View on Amazon |
| GSP Fits: 2.5L V6 | NCV75521 | 🇺🇸 US | Front Left | View on Amazon |
| GSP Fits: 2.5L V6 | NCV75522 | 🇺🇸 US | Front Right | View on Amazon |
| TRAKMOTIVE Fits: 2.5L V6 | HY8024 | 🇺🇸 US | Front Left | 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 2001 Kia Optima, from CARDONE, AUTO EXTRA, FAMOUS BRAND and 4 other brands. APWI IZ8360A carries the "Popular" badge.
In the Economy grade, AUTO EXTRA, CARDONE and FAMOUS BRAND supply 6 parts: the catalog's value-priced group. A representative part number is AUTO EXTRA HY88529A.
The Standard Replacement section lists 10 options from APWI, TOP NOTCH, TRAKMOTIVE and 2 other brands — built to original-equipment specification. APWI IZ8360A is listed in this group.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: 2.5L V6 | 1032818 | 🇺🇸 US | Front Outer | View on Amazon |
This table covers the boots that keep grease in a CV joint. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn.
One part is listed for the 2001 Kia Optima — BECK/ARNLEY 1032818.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 2.5L V6 | WTLM501310 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: 2.5L V6 | WT30207 | 🇺🇸 US | Bearing & Race Set | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 2.5L V6 | A35 | 🇺🇸 US 🇨🇦 CA | GoldIncludes LM501349 & LM501310 | View on Amazon |
| SKF Popular Fits: 2.5L V6 | BR35 | 🇺🇸 US | Fits Automatic trans.or Manual trans. | View on Amazon |
| TIMKEN Popular Fits: 2.5L V6 | SET45 | 🇺🇸 US | Bearing & Race Set | View on Amazon |
| BCA Fits: 2.5L V6 | NB30207 | 🇺🇸 US | Bearing & Race Set | View on Amazon |
| NATIONAL Fits: 2.5L V6 | 30207 | 🇺🇸 US | Bearing & Race Set | View on Amazon |
| NSK Fits: 2.5L V6 | TRB45 | 🇺🇸 US | Bearing & Race SetKit Contents: 1 Cup, 1 Cone | View on Amazon |
| SCHAEFFLER Fits: 2.5L V6 | KLM501349 | 🇺🇸 US | Bearing Only | View on Amazon |
| SCHAEFFLER Fits: 2.5L V6 | KT45 | 🇺🇸 US | Bearing and Race Set | View on Amazon |
| SKF Fits: 2.5L V6 | LM501310VP | 🇺🇸 US | Race | View on Amazon |
This table covers the bearings and races that support the differential carrier.
11 Differential Carrier Bearing / Race parts are listed for the 2001 Kia Optima, from WJB / INMOTION PARTS, SKF, SCHAEFFLER and 5 other brands. ACDELCO A35 carries the "Popular" badge.
Economy: 2 parts, from WJB / INMOTION PARTS. A representative part number is WJB / INMOTION PARTS WTLM501310.
The Standard Replacement section: 9 options from SKF, SCHAEFFLER, ACDELCO and 4 other brands. ACDELCO A35 is listed in this group.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| IDEMITSU Fits: 2.5L V6 | 30305024750 | 🇺🇸 US | 75W90 Racing Gear Oil1 Quart | 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.
One part is listed for the 2001 Kia Optima — IDEMITSU 30305024750.
Buying Drivetrain Parts for a 2001 Kia Optima
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. Every drivetrain part here is 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 Differential Carrier Bearing / Race .
Frequently Asked Questions
How many drivetrain parts fit the 2001 Kia Optima?
Our catalog currently lists 29 drivetrain parts for the 2001 Kia Optima across 4 subcategories and 17 brands, covering both the 2.4L L4 and the 2.5L V6. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2001 Kia Optima engines?
Yes. Every drivetrain part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 2001 Kia Optima?
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 2001 Kia Optima 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 2001 Kia Optima?
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 2001 Kia Optima
Drivetrain Parts for Other Kia Optima 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.