This page lists 34 drivetrain parts for the 2021 Toyota Highlander, across 5 part types, covering both the 2.5L L4 ELECTRIC/GAS and the 3.5L V6. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 Toyota Highlander, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. 31 parts of the 34 listed are CV Axle (17 parts), Gear Oil (12 parts) and Axle Shaft Seal (2 parts). The other 2 part types cover the remaining 3 parts.
The 2021 Toyota Highlander was sold with both the 2.5L L4 ELECTRIC/GAS and the 3.5L V6. 6 parts fit every engine; the other 28 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Toyota Highlander drivetrain parts are VALVOLINE (8 parts), TRAKMOTIVE (7 parts) and GSP (7 parts), plus 7 more brands.
5 parts on this 2021 Toyota Highlander page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including TOP NOTCH TN18199 (CV Axle) and ACDELCO 109243 (Gear Oil). Click any part number to see every vehicle that part fits.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Fits: all 2021 Highlander engines | SL260534 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left | View on Amazon |
| TIMKEN Fits: all 2021 Highlander engines | SL260535 | 🇺🇸 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 2021 Toyota Highlander come from TIMKEN. Every part fits both the 2.5L L4 ELECTRIC/GAS and the 3.5L V6.
Listed part numbers: TIMKEN SL260534 and TIMKEN SL260535.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TOP NOTCH Popular Fits: all 2021 Highlander engines | TN18199 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| TRAKMOTIVE Popular Fits: all 2021 Highlander engines | TO86044 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Popular Fits: 3.5L V6 | TO86043 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| CARDONE Fits: 3.5L V6 | 665425 | 🇺🇸 US 🇨🇦 CA | Rear RightAWD | View on Amazon |
| GSP Fits: 2.5L L4 ELECTRIC/GAS | NCV69212 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| GSP Fits: 2.5L L4 ELECTRIC/GAS | NCV69213 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| GSP Fits: all 2021 Highlander engines | NCV69228 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| GSP Fits: all 2021 Highlander engines | NCV69226 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| GSP Fits: 3.5L V6 | NCV69275 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear RightLimited or Platinum or XSE Model | View on Amazon |
| GSP Fits: 3.5L V6 | NCV69225 | 🇺🇸 US 🇨🇦 CA | Front RightAWD | View on Amazon |
| GSP Fits: 3.5L V6 | NCV69274 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear LeftLimited or Platinum or XSE Model | View on Amazon |
| TOP NOTCH Fits: 2.5L L4 ELECTRIC/GAS | TN18191 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| TRAKMOTIVE Fits: 2.5L L4 ELECTRIC/GAS | TO86039 | 🇺🇸 US 🇨🇦 CA | Rear LeftAWD | View on Amazon |
| TRAKMOTIVE Fits: 2.5L L4 ELECTRIC/GAS | TO86046 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 3.5L V6 | TO86036 | 🇺🇸 US 🇨🇦 CA | Rear RightAWD | View on Amazon |
| TRAKMOTIVE Fits: 3.5L V6 | TO86040 | 🇺🇸 US 🇨🇦 CA | Rear LeftAWD | View on Amazon |
| TRAKMOTIVE Fits: 3.5L V6 | TO86041 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear RightVIN Z (5th Digit) | 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.
17 CV Axle parts for the 2021 Toyota Highlander come from 4 brands — TRAKMOTIVE, GSP, TOP NOTCH and 1 other brand. The "Popular" part is TOP NOTCH TN18199. 4 parts fit every engine; the other 13 are engine-specific.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Fits: 3.5L V6 | SL260610 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearL Model or LE Model or XLE 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.
This group shows a single part: TIMKEN SL260610.
Gear Oil
ATF 64
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PENTOSIN Fits: 2.5L L4 ELECTRIC/GAS | 1058113 | 🇺🇸 US 🇨🇦 CA | 1 LiterATF64 or ATF44 | View on Amazon |
| PENTOSIN Fits: 2.5L L4 ELECTRIC/GAS | 1058215 | 🇺🇸 US 🇨🇦 CA | 5 LitersATF64 or ATF44 | View on Amazon |
Dexron
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 2.5L L4 ELECTRIC/GAS | 109243 | 🇺🇸 US | Container Type: Plastic Container | View on Amazon |
Multi-Vehicle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 2.5L L4 ELECTRIC/GAS | VV3246 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Quart | View on Amazon |
| LUCAS OIL Fits: 2.5L L4 ELECTRIC/GAS | 11255 | 🇺🇸 US 🇨🇦 CA | LOW VISCOSITY SYNTHETIC MULTI-VEHICLE AUTOMATIC TRANSMISSION FLUID1 qt | View on Amazon |
| LUCAS OIL Fits: 2.5L L4 ELECTRIC/GAS | 18037 | 🇺🇸 US 🇨🇦 CA | Low Viscosity Synthetic Multi-Vehicle Automatic Transmission Fluid6 Gallon | View on Amazon |
| MOBIL Fits: 2.5L L4 ELECTRIC/GAS | 126505 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle ATF | View on Amazon |
| VALVOLINE Fits: 2.5L L4 ELECTRIC/GAS | 773775 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Gallon | View on Amazon |
| VALVOLINE Fits: 2.5L L4 ELECTRIC/GAS | 881051 | 🇺🇸 US 🇨🇦 CA | Maxlife Multi-Vehicle Full Synthetic ATF5 Gallon Bay Box | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 2.5L L4 ELECTRIC/GAS | 899179 | 🇺🇸 US 🇨🇦 CA | Extended Protection Full Synthetic ATF1 Quart | View on Amazon |
| VALVOLINE Fits: 3.5L V6 | 915052 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-85 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 3.5L V6 | 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.
12 Gear Oil parts for the 2021 Toyota Highlander come from 5 brands — VALVOLINE, PENTOSIN, LUCAS OIL and 2 other brands. The "Popular" part is ACDELCO 109243.
In the ATF 64 grade, PENTOSIN supplies 2 parts: grouped under the catalog's "ATF 64" designation — the notes column spells out what sets them apart. A representative part number is PENTOSIN 1058113.
The Dexron section lists 1 option from ACDELCO — grouped under the catalog's "Dexron" designation — the notes column spells out what sets them apart. ACDELCO 109243 is listed in this group.
The Multi-Vehicle section lists 6 options from VALVOLINE, LUCAS OIL and MOBIL — grouped under the catalog's "Multi-Vehicle" designation — the notes column spells out what sets them apart. VALVOLINE VV3246 is listed in this group.
3 further parts sit outside the graded sections, with the same engine-level match.
Transfer Case Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 3.5L V6 | 915052 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-85 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 3.5L V6 | 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.
2 Transfer Case Fluid parts for the 2021 Toyota Highlander come from VALVOLINE.
Part numbers include VALVOLINE 915052 and VALVOLINE 915053.
Buying Drivetrain Parts for a 2021 Toyota Highlander
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 Gear Oil .
Frequently Asked Questions
How many drivetrain parts fit the 2021 Toyota Highlander?
Our catalog currently lists 34 drivetrain parts for the 2021 Toyota Highlander across 5 subcategories and 10 brands, covering both the 2.5L L4 ELECTRIC/GAS and the 3.5L V6. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2021 Toyota Highlander engines?
Some do. 6 parts fit every engine; the other 28 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 Toyota Highlander?
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 Toyota Highlander 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 Toyota Highlander?
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 Toyota Highlander
Drivetrain Parts for Other Toyota Highlander Years
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