The 2012 Kia Optima has 9 drivetrain parts with verified fitment on this page — 2 part types and 6 brands, covering all 3 engine options (2.0L L4 Turbocharged, 2.4L L4 and 2.4L L4 ELECTRIC/GAS). Each part includes a manufacturer part number and application notes.
On the 2012 Kia Optima, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. All 9 listed parts are CV Axle (8 parts) and CV Joint Boot (1 part).
The 2012 Kia Optima was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
6 brands supply drivetrain parts for the 2012 Kia Optima, led by TOP NOTCH (2 parts), GSP (2 parts) and TRAKMOTIVE (2 parts), plus 3 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2012 Kia Optima. 2 parts have it, including TOP NOTCH TN60038 (CV Axle) and TOP NOTCH TN60039 (CV Axle). Each part number opens a page with every vehicle that part fits.
CV Axle
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTO EXTRA Fits: 2.4L L4 ELECTRIC/GAS | HY88707A | 🇺🇸 US 🇨🇦 CA | Front RightOE# 495014R250 | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TOP NOTCH Popular Fits: 2.4L L4 ELECTRIC/GAS | TN60038 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| TOP NOTCH Popular Fits: 2.4L L4 ELECTRIC/GAS | TN60039 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| CARDONE Fits: 2.4L L4 ELECTRIC/GAS | 663827 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| GSP Fits: 2.4L L4 ELECTRIC/GAS | NCV37069 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| GSP Fits: 2.4L L4 ELECTRIC/GAS | NCV37070 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| TRAKMOTIVE Fits: 2.4L L4 ELECTRIC/GAS | HY8226 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| TRAKMOTIVE Fits: 2.4L L4 ELECTRIC/GAS | HY8233 | 🇺🇸 US 🇨🇦 CA | Front Right | 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.
8 CV Axle parts are listed for the 2012 Kia Optima, from TOP NOTCH, GSP, TRAKMOTIVE and 2 other brands. TOP NOTCH TN60038 carries the "Popular" badge.
In the Economy grade, AUTO EXTRA supplies 1 part: the catalog's value-priced group. A representative part number is AUTO EXTRA HY88707A.
The Standard Replacement section lists 7 options from TOP NOTCH, GSP, TRAKMOTIVE and 1 other brand — built to original-equipment specification. TOP NOTCH TN60038 is listed in this group.
Part numbers include TOP NOTCH TN60038, AUTO EXTRA HY88707A and TOP NOTCH TN60039, among others listed above.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: 2.4L L4 ELECTRIC/GAS | 1032751 | 🇺🇸 US 🇨🇦 CA | 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.
One part is listed for the 2012 Kia Optima — BECK/ARNLEY 1032751.
Buying Drivetrain Parts for a 2012 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 CV Joint Boot .
Frequently Asked Questions
How many drivetrain parts fit the 2012 Kia Optima?
Our catalog currently lists 9 drivetrain parts for the 2012 Kia Optima across 2 subcategories and 6 brands, covering all 3 engine options (2.0L L4 Turbocharged, 2.4L L4 and 2.4L L4 ELECTRIC/GAS). Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2012 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 2012 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 2012 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 2012 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 2012 Kia Optima
Drivetrain Parts for Other Kia Optima Years
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