The 2023 Lexus IS300 has 15 drivetrain parts with verified fitment on this page — 6 part types and 6 brands, covering both the 2.0L L4 Turbocharged and the 3.5L V6. Each part includes a manufacturer part number and application notes.
On the 2023 Lexus IS300, 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 (5 parts), Gear Oil (3 parts) and Axle Shaft Seal (2 parts). The other 3 part types cover the remaining 5 parts.
The 2023 Lexus IS300 was sold with both the 2.0L L4 Turbocharged and the 3.5L V6. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2023 Lexus IS300 drivetrain parts are TIMKEN (4 parts), GSP (3 parts) and TOP NOTCH (2 parts), plus 3 more brands.
1 part on this 2023 Lexus IS300 page carries a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — TOP NOTCH TN18010 (CV Axle). Click any part number to see every vehicle that part fits.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Fits: 2.0L L4 Turbocharged | SL260507 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left | View on Amazon |
| TIMKEN Fits: 2.0L L4 Turbocharged | SL260508 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right | 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.
2 Axle Shaft Seal parts for the 2023 Lexus IS300 come from TIMKEN.
Listed part numbers: TIMKEN SL260507 and TIMKEN SL260508.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TOP NOTCH Popular Fits: 2.0L L4 Turbocharged | TN18010 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right | View on Amazon |
| GSP Fits: 2.0L L4 Turbocharged | NCV69045 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right | View on Amazon |
| GSP Fits: 2.0L L4 Turbocharged | NCV69250 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left | View on Amazon |
| GSP Fits: 2.0L L4 Turbocharged | NCV69096 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| TOP NOTCH Fits: 2.0L L4 Turbocharged | TN18018 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
5 CV Axle parts for the 2023 Lexus IS300 come from 2 brands — GSP and TOP NOTCH. The "Popular" part is TOP NOTCH TN18010.
Listed part numbers: TOP NOTCH TN18010, GSP NCV69045 and GSP NCV69250, plus the other parts above.
Differential Fill / Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.0L L4 Turbocharged | 991000CD | 🇺🇸 US 🇨🇦 CA | Front DifferentialAWD | View on Amazon |
| DORMAN Fits: 2.0L L4 Turbocharged | 991000 | 🇺🇸 US 🇨🇦 CA | Front DifferentialAWD | View on Amazon |
This table covers the Differential Fill drain plugs.
2 Differential Fill / Drain Plug parts for the 2023 Lexus IS300 come from DORMAN.
Listed part numbers: DORMAN 991000CD and DORMAN 991000.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Fits: 2.0L L4 Turbocharged | SL260600 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearBase Model | View on Amazon |
| TIMKEN Fits: 2.0L L4 Turbocharged | SL260611 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | FrontBase 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.
2 Differential Pinion Seal parts for the 2023 Lexus IS300 come from TIMKEN.
Part numbers include TIMKEN SL260600 and TIMKEN SL260611.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL Fits: 2.0L L4 Turbocharged | 104361 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Synthetic Gear Lube Limited Slip 75W-901 Quart | View on Amazon |
| VALVOLINE Fits: 2.0L L4 Turbocharged | 915052 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Advanced Full Synthetic SAE 75W-85 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 2.0L L4 Turbocharged | 915053 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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 for the 2023 Lexus IS300 come from 2 brands — VALVOLINE and MOBIL.
This group includes MOBIL 104361, VALVOLINE 915052 and VALVOLINE 915053.
Transfer Case Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL Fits: 2.0L L4 Turbocharged | 126505 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi-Vehicle ATF | 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.
This group shows a single part: MOBIL 126505.
Buying Drivetrain Parts for a 2023 Lexus IS300
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 Gear Oil .
Frequently Asked Questions
How many drivetrain parts fit the 2023 Lexus IS300?
Our catalog currently lists 15 drivetrain parts for the 2023 Lexus IS300 across 6 subcategories and 6 brands, covering both the 2.0L L4 Turbocharged and the 3.5L V6. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2023 Lexus IS300 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 2023 Lexus IS300?
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 2023 Lexus IS300 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 2023 Lexus IS300?
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 2023 Lexus IS300
Drivetrain Parts for Other Lexus IS300 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.