This page lists 45 drivetrain parts for the 2007 Kia Optima, across 5 part types, covering both the 2.4L L4 and the 2.7L V6. Every part shows its brand, manufacturer part number and fitment notes.
On the 2007 Kia Optima, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. Most of the listed parts are CV Axle (24 parts), Differential Carrier Bearing / Race (13 parts) and CV Joint Boot (6 parts). The other 2 part types cover the remaining 2 parts.
The 2007 Kia Optima was sold with both the 2.4L L4 and the 2.7L V6. 20 parts fit every engine; the other 25 are engine-specific. Each part shows which engine(s) it fits.
17 brands supply drivetrain parts for the 2007 Kia Optima, led by CARDONE (9 parts), TRAKMOTIVE (5 parts) and BECK/ARNLEY (4 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 2007 Kia Optima. 9 parts have it, including CARDONE 603585 (CV Axle) and WJB / INMOTION PARTS WTA35 (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 |
|---|---|---|---|---|
| CARDONE Popular Fits: 2.4L L4 | 603585 | 🇺🇸 US | Remanufactured | View on Amazon |
| CARDONE Popular Fits: 2.4L L4 | 603586 | 🇺🇸 US | Remanufactured | View on Amazon |
| HERI Popular Fits: 2.4L L4 | 87380 | 🇺🇸 US | Front LeftAutomatic trans. | View on Amazon |
| CARDONE Fits: 2.4L L4 | 603584 | 🇺🇸 US | Remanufactured | View on Amazon |
| CARDONE Fits: 2.4L L4 | 603589 | 🇺🇸 US | Remanufactured | View on Amazon |
| CARDONE Fits: 2.7L V6 | 603593 | 🇺🇸 US | RemanufacturedPackage Contents: Complete Axle | View on Amazon |
| CARDONE Fits: 2.7L V6 | 603592 | 🇺🇸 US | Remanufactured | View on Amazon |
| FAMOUS BRAND Fits: all 2007 Optima engines | NCV75521 | 🇺🇸 US 🇨🇦 CA | LeftFront | View on Amazon |
| FAMOUS BRAND Fits: all 2007 Optima engines | NCV547946 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APWI Popular Fits: all 2007 Optima engines | KA8017A | 🇺🇸 US | Front LeftAutomatic trans. | View on Amazon |
| APWI Popular Fits: 2.7L V6 | KA8024A | 🇺🇸 US | Front Right | View on Amazon |
| TRAKMOTIVE Popular Fits: 2.7L V6 | HY8027 | 🇺🇸 US | Front Right | View on Amazon |
| CARDONE Fits: all 2007 Optima engines | 663593 | 🇺🇸 US | Front LeftAutomatic trans. | View on Amazon |
| CARDONE Fits: 2.4L L4 | 663587 | 🇺🇸 US | Front Right | View on Amazon |
| CARDONE Fits: 2.7L V6 | 663532 | 🇺🇸 US | Front Right | View on Amazon |
| GSP Fits: all 2007 Optima engines | NCV75032 | 🇺🇸 US | Front Left | View on Amazon |
| GSP Fits: 2.4L L4 | NCV75034 | 🇺🇸 US | Front Right | View on Amazon |
| GSP Fits: 2.7L V6 | NCV75033 | 🇺🇸 US | Front Right | View on Amazon |
| TOP NOTCH Fits: all 2007 Optima engines | TN60235 | 🇺🇸 US | Front Left | View on Amazon |
| TOP NOTCH Fits: 2.4L L4 | TN60237 | 🇺🇸 US | Front Right | View on Amazon |
| TOP NOTCH Fits: 2.7L V6 | TN60236 | 🇺🇸 US | Front Right | View on Amazon |
| TRAKMOTIVE Fits: 2.4L L4 | HY8263 | 🇺🇸 US | Front LeftAutomatic trans. | View on Amazon |
| TRAKMOTIVE Fits: 2.4L L4 | HY8300 | 🇺🇸 US | Front RightManual trans. | View on Amazon |
| TRAKMOTIVE Fits: 2.7L 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.
24 CV Axle parts are listed for the 2007 Kia Optima, from CARDONE, TRAKMOTIVE, GSP and 4 other brands. CARDONE 603585 carries the "Popular" badge. 6 parts fit every engine; the other 18 are engine-specific.
In the Economy grade, CARDONE, FAMOUS BRAND and HERI supply 9 parts: the catalog's value-priced group. A representative part number is CARDONE 603585.
The Standard Replacement section lists 15 options from TRAKMOTIVE, CARDONE, GSP and 2 other brands — built to original-equipment specification. APWI KA8017A is listed in this group.
CV Intermediate Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TRAKMOTIVE Fits: 2.7L V6 | KA3525 | 🇺🇸 US | Front Right | View on Amazon |
This table covers the CV Intermediate shafts.
This group shows a single part: TRAKMOTIVE KA3525.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: 2.4L L4 | 1032892 | 🇺🇸 US | Front Outer | View on Amazon |
| BECK/ARNLEY Fits: 2.4L L4 | 1032971 | 🇺🇸 US | Front Inner | View on Amazon |
| BECK/ARNLEY Fits: 2.7L V6 | 1032804 | 🇺🇸 US | Front Outer | View on Amazon |
| BECK/ARNLEY Fits: 2.7L V6 | 1032969 | 🇺🇸 US | Front Inner | View on Amazon |
| MEVOTECH Fits: 2.7L V6 | DX892 | 🇺🇸 US | Front Outer | View on Amazon |
| MEVOTECH Fits: 2.7L V6 | DX789 | 🇺🇸 US | Front Inner | 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.
6 CV Joint Boot parts are listed for the 2007 Kia Optima, from BECK/ARNLEY and MEVOTECH.
Part numbers include BECK/ARNLEY 1032892, BECK/ARNLEY 1032971 and BECK/ARNLEY 1032804, among others listed above.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular Fits: all 2007 Optima engines | WTA35 | 🇺🇸 US | Bearing Shape: CylindricalBearing & Race Set | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2007 Optima engines | WTLM501310 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2007 Optima engines | WT32009X | 🇺🇸 US | Manual trans.with Hyundai M5GF2 Transmission | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: all 2007 Optima engines | A35 | 🇺🇸 US 🇨🇦 CA | GoldIncludes LM501349 & LM501310 | View on Amazon |
| SKF Popular Fits: all 2007 Optima engines | BR35 | 🇺🇸 US | Automatic trans. | View on Amazon |
| BCA Fits: all 2007 Optima engines | NBA35 | 🇺🇸 US | Bearing Shape: Cylindrical or Taper Bearing SetBearing & Race | View on Amazon |
| BCA Fits: all 2007 Optima engines | NB32009X | 🇺🇸 US | Bearing & Race Set | View on Amazon |
| NATIONAL Fits: all 2007 Optima engines | A35 | 🇺🇸 US | Taper Bearing Set Includes Cup and ConeBearing & Race Set | View on Amazon |
| NATIONAL Fits: all 2007 Optima engines | 32009X | 🇺🇸 US | Manual trans.with Hyundai M5GF2 Transmission | View on Amazon |
| SCHAEFFLER Fits: all 2007 Optima engines | KLM501349 | 🇺🇸 US | Bearing Only | View on Amazon |
| SCHAEFFLER Fits: all 2007 Optima engines | KT45 | 🇺🇸 US | Bearing and Race Set | View on Amazon |
| SKF Fits: all 2007 Optima engines | LM501310VP | 🇺🇸 US | Race | View on Amazon |
| TIMKEN Fits: all 2007 Optima engines | 32009X | 🇺🇸 US | Manual trans.M5GF2 | View on Amazon |
This table covers the bearings and races that support the differential carrier.
13 Differential Carrier Bearing / Race parts are listed for the 2007 Kia Optima, from WJB / INMOTION PARTS, SKF, BCA and 4 other brands. WJB / INMOTION PARTS WTA35 carries the "Popular" badge. All of them fit every engine offered in the 2007 Optima.
Economy: 3 parts, from WJB / INMOTION PARTS. A representative part number is WJB / INMOTION PARTS WTA35.
The Standard Replacement section: 10 options from SKF, BCA, NATIONAL and 3 other brands. ACDELCO A35 is listed in this group.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| IDEMITSU Fits: all 2007 Optima engines | 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 2007 Kia Optima — IDEMITSU 30305024750.
Buying Drivetrain Parts for a 2007 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. 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 Differential Carrier Bearing / Race .
Frequently Asked Questions
How many drivetrain parts fit the 2007 Kia Optima?
Our catalog currently lists 45 drivetrain parts for the 2007 Kia Optima across 5 subcategories and 17 brands, covering both the 2.4L L4 and the 2.7L V6. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2007 Kia Optima engines?
Some do. 20 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 drivetrain problems on a 2007 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 2007 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 2007 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 2007 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.