32 Drivetrain parts are listed for the 2021 Mazda CX-30, in 4 part types, covering all 3 engine options (2.0L L4, 2.5L L4 and 2.5L L4 Turbocharged). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 Mazda CX-30, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. 31 parts of the 32 listed are CV Axle (11 parts), Gear Oil (10 parts) and Transfer Case Fluid (10 parts). The other 1 part type covers the remaining 1 part.
The 2021 Mazda CX-30 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Mazda CX-30 drivetrain parts are VALVOLINE (20 parts), TRAKMOTIVE (7 parts) and TOP NOTCH (2 parts), plus 2 more brands.
6 parts on this 2021 Mazda CX-30 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including TOP NOTCH TN90066 (CV Axle) and VALVOLINE VV982 (Gear Oil). 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, 2.5L L4 Turbocharged | SL260477 | 🇺🇸 US 🇨🇦 CA | Rear | 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.
This group shows a single part: TIMKEN SL260477.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TOP NOTCH Popular Fits: 2.5L L4 Turbocharged | TN90066 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| TOP NOTCH Popular Fits: 2.5L L4 Turbocharged | TN90067 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| GSP Fits: 2.5L L4 Turbocharged | NCV47120 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| GSP Fits: 2.5L L4 Turbocharged | NCV47121 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| TRAKMOTIVE Fits: 2.0L L4, 2.5L L4 Turbocharged | MZ86050 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| TRAKMOTIVE Fits: 2.0L L4, 2.5L L4 Turbocharged | MZ86049 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| TRAKMOTIVE Fits: 2.0L L4 | MZ86026 | 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 2.0L L4 | MZ86047 | 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 2.5L L4 Turbocharged | MZ86031 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE Fits: 2.5L L4 Turbocharged | MZ86028 | 🇺🇸 US 🇨🇦 CA | AARInboard Joint Boot Material: Neoprene | View on Amazon |
| TRAKMOTIVE Fits: 2.5L L4 Turbocharged | MZ86030 | 🇺🇸 US 🇨🇦 CA | AARInboard Joint Boot Material: Thermoplastic | 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.
11 CV Axle parts for the 2021 Mazda CX-30 come from 3 brands — TRAKMOTIVE, TOP NOTCH and GSP. The "Popular" part is TOP NOTCH TN90066.
Gear Oil
SAE 75W-140
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 2.5L L4 Turbocharged | VV982 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-14 0 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | 889787 | 🇺🇸 US 🇨🇦 CA | Full Synthetic SAE 75W-14 0 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | 887344 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-14 0 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | VV981 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-14 0 Gear Oil5 Gallon | View on Amazon |
SAE 75W-90
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 2.5L L4 Turbocharged | VV975 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | VV820 | 🇺🇸 US 🇨🇦 CA | Daily Protection SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | 889785 | 🇺🇸 US 🇨🇦 CA | Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | 882505 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | 723856 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil5 Gallon | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | VV822 | 🇺🇸 US 🇨🇦 CA | Daily Protection SAE 75W-90 Gear Oil16 Gallon KEG | 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.
10 Gear Oil parts for the 2021 Mazda CX-30 come from VALVOLINE. The "Popular" part is VALVOLINE VV982.
The SAE 75W-140 section lists 4 options from VALVOLINE — grouped under the catalog's "SAE 75W-140" designation — the notes column spells out what sets them apart. VALVOLINE VV982 is listed in this group.
The SAE 75W-90 section lists 6 options from VALVOLINE — grouped under the catalog's "SAE 75W-90" designation — the notes column spells out what sets them apart. VALVOLINE VV975 is listed in this group.
Transfer Case Fluid
SAE 75W-140
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 2.5L L4 Turbocharged | VV982 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-14 0 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | 889787 | 🇺🇸 US 🇨🇦 CA | Full Synthetic SAE 75W-14 0 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | 887344 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-14 0 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | VV981 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-14 0 Gear Oil5 Gallon | View on Amazon |
SAE 75W-90
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 2.5L L4 Turbocharged | VV975 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | VV820 | 🇺🇸 US 🇨🇦 CA | Daily Protection SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | 889785 | 🇺🇸 US 🇨🇦 CA | Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | 882505 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | 723856 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil5 Gallon | View on Amazon |
| VALVOLINE Fits: 2.5L L4 Turbocharged | VV822 | 🇺🇸 US 🇨🇦 CA | Daily Protection SAE 75W-90 Gear Oil16 Gallon KEG | 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.
10 Transfer Case Fluid parts for the 2021 Mazda CX-30 come from VALVOLINE. The "Popular" part is VALVOLINE VV982.
The SAE 75W-140 section: 4 options from VALVOLINE. VALVOLINE VV982 is listed in this group.
The SAE 75W-90 section: 6 options from VALVOLINE. VALVOLINE VV975 is listed in this group.
Buying Drivetrain Parts for a 2021 Mazda CX-30
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 2021 Mazda CX-30?
Our catalog currently lists 32 drivetrain parts for the 2021 Mazda CX-30 across 4 subcategories and 5 brands, covering all 3 engine options (2.0L L4, 2.5L L4 and 2.5L L4 Turbocharged). Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2021 Mazda CX-30 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 2021 Mazda CX-30?
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 Mazda CX-30 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 Mazda CX-30?
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 Mazda CX-30
Drivetrain Parts for Other Mazda CX-30 Years
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