62 Drivetrain parts are listed for the 2021 GMC Acadia, in 24 part types, covering all 3 engine options (2.0L L4 Turbocharged, 2.5L L4 and 3.6L V6). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 GMC Acadia, 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 (13 parts), Transfer Case Fluid (7 parts) and CV Joint Boot Band (6 parts). The other 21 part types cover the remaining 36 parts.
The 2021 GMC Acadia 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 GMC Acadia drivetrain parts are GM GENUINE (33 parts), VALVOLINE (11 parts) and ELRING (6 parts), plus 6 more brands.
7 parts on this 2021 GMC Acadia page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including GM GENUINE 85150636 (CV Axle) and GM GENUINE 11611965 (CV Joint Boot Band). Click any part number to see every vehicle that part fits.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.0L L4 Turbocharged, 2.5L L4 | 23276834 | 🇺🇸 US 🇨🇦 CA | Rear Left4WD | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged, 2.5L L4 | 291342 | 🇺🇸 US 🇨🇦 CA | Rear4WD | View on Amazon |
| SKF Fits: 2.0L L4 Turbocharged, 2.5L L4 | 13544A | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| TIMKEN Fits: 2.0L L4 Turbocharged, 2.5L L4 | SL260587 | 🇺🇸 US 🇨🇦 CA | 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.
4 Axle Shaft Seal parts for the 2021 GMC Acadia come from 3 brands — GM GENUINE, SKF and TIMKEN.
Part numbers include GM GENUINE 23276834, GM GENUINE 291342 and SKF 13544A, among others listed above.
CV Axle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 2.0L L4 Turbocharged, 2.5L L4 | 85150636 | 🇺🇸 US 🇨🇦 CA | Rear Right4WD | View on Amazon |
| TOP NOTCH Popular Fits: 2.0L L4 Turbocharged, 2.5L L4 | TN20364 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| TOP NOTCH Popular Fits: 2.0L L4 Turbocharged | TN20378 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged, 2.5L L4 | 86508786 | 🇺🇸 US 🇨🇦 CA | Universal Joints Included: No | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged, 2.5L L4 | 85150638 | 🇺🇸 US 🇨🇦 CA | Rear Left4WD | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged | 85660312 | 🇺🇸 US 🇨🇦 CA | Universal Joints Included: No | View on Amazon |
| GM GENUINE Fits: 2.5L L4 | 85535784 | 🇺🇸 US 🇨🇦 CA | Universal Joints Included: No | View on Amazon |
| GSP Fits: 2.0L L4 Turbocharged | NCV17003 | 🇺🇸 US 🇨🇦 CA | Rear LeftSLE Model or SLT Model | View on Amazon |
| GSP Fits: 2.0L L4 Turbocharged, 2.5L L4 | NCV17015 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| GSP Fits: 2.0L L4 Turbocharged | NCV17020 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| TOP NOTCH Fits: 2.0L L4 Turbocharged | TN20122 | 🇺🇸 US 🇨🇦 CA | Rear LeftSLE Model or SLT Model | View on Amazon |
| TRAKMOTIVE Fits: 2.0L L4 Turbocharged, 2.5L L4 | GM86088 | 🇺🇸 US 🇨🇦 CA | Rear Leftwithout OPT G99 | View on Amazon |
| TRAKMOTIVE Fits: 2.0L L4 Turbocharged | GM86069 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | 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.
13 CV Axle parts for the 2021 GMC Acadia come from 4 brands — GM GENUINE, TOP NOTCH, GSP and 1 other brand. The "Popular" part is GM GENUINE 85150636.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.0L L4 Turbocharged | 85662927 | 🇺🇸 US 🇨🇦 CA | FrontTrans. code 9T60 | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged | 85662928 | 🇺🇸 US 🇨🇦 CA | Fits Front4WD | 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.
2 CV Joint Boot parts for the 2021 GMC Acadia come from GM GENUINE.
This group includes GM GENUINE 85662927 and GM GENUINE 85662928.
CV Joint Boot Band
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 2.5L L4 | 11611965 | 🇺🇸 US 🇨🇦 CA | Front InnerTrans.Code 9T50 | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged, 2.5L L4 | 11611752 | 🇺🇸 US 🇨🇦 CA | Rear Inboard Inner4WD | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged, 2.5L L4 | 364038 | 🇺🇸 US 🇨🇦 CA | Front Outboard OuterTrans.Code 9T60 | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged | 84167063 | 🇺🇸 US 🇨🇦 CA | Front InnerTrans.Code 9T60 | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged, 2.5L L4 | 84167070 | 🇺🇸 US 🇨🇦 CA | Fits Front InnerTrans.Code 9T60 | View on Amazon |
| GM GENUINE Fits: 2.0L L4 Turbocharged, 2.5L L4 | 84207707 | 🇺🇸 US 🇨🇦 CA | Fits Rear Outboard Inner4WD | View on Amazon |
This table covers the bands that clamp a CV boot to the joint.
GM GENUINE supplies the 6 CV Joint Boot Band parts for the 2021 GMC Acadia. GM GENUINE 11611965 carries the "Popular" badge.
Part numbers include GM GENUINE 11611965, GM GENUINE 11611752 and GM GENUINE 364038, among others listed above.
CV Joint Lock Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.0L L4 Turbocharged | 90223082 | 🇺🇸 US 🇨🇦 CA | Front InnerTrans.Code 9T60 | View on Amazon |
| GM GENUINE Fits: 2.5L L4 | 90121202 | 🇺🇸 US 🇨🇦 CA | Front InnerTrans.Code 9T50 | View on Amazon |
This table covers the CV Joint Lock rings.
GM GENUINE supplies both parts for the 2021 GMC Acadia.
Listed part numbers: GM GENUINE 90223082 and GM GENUINE 90121202.
Differential Carrier
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 24284661 | 🇺🇸 US 🇨🇦 CA | FrontFWD | View on Amazon |
This table covers the carriers that hold the differential gears in the axle.
This group shows a single part: GM GENUINE 24284661.
Differential Carrier Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 11609598 | 🇺🇸 US 🇨🇦 CA | M12X1.75X80.9 | View on Amazon |
This table covers the Differential Carrier bolts.
One part is listed for the 2021 GMC Acadia — GM GENUINE 11609598.
Differential Carrier Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 84905394 | 🇺🇸 US 🇨🇦 CA | Rear4WD | View on Amazon |
| GM GENUINE Fits: 2.5L L4 | 84417056 | 🇺🇸 US 🇨🇦 CA | Front4WD | View on Amazon |
This table covers the Differential Carrier bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
2 Differential Carrier Bushing parts for the 2021 GMC Acadia come from GM GENUINE.
Listed part numbers: GM GENUINE 84905394 and GM GENUINE 84417056.
Differential Carrier Fluid Baffle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 24298737 | 🇺🇸 US 🇨🇦 CA | FWDTrans.Code 9T50 | View on Amazon |
| GM GENUINE Fits: 2.5L L4 | 24298738 | 🇺🇸 US 🇨🇦 CA | FWDTrans.Code 9T50 | View on Amazon |
This table covers the baffles that control oil in the differential carrier.
2 Differential Carrier Fluid Baffle parts for the 2021 GMC Acadia come from GM GENUINE.
This group includes GM GENUINE 24298737 and GM GENUINE 24298738.
Differential Control Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 85001638 | 🇺🇸 US 🇨🇦 CA | Programming Required: YES | View on Amazon |
This table covers the Differential control modules.
One part is listed for the 2021 GMC Acadia — GM GENUINE 85001638.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 2.5L L4 | B18350 | 🇺🇸 US 🇨🇦 CA | 4WDBody code: NB26 | View on Amazon |
This table covers the gaskets that seal the Differential Cover. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
This group shows a single part: ELRING B18350.
Differential Cover Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 23234990 | 🇺🇸 US 🇨🇦 CA | 4WDExcept Electronic Twin Clutch Positraction Axle (G99) | View on Amazon |
This table covers the Differential Cover plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes.
One part is listed for the 2021 GMC Acadia — GM GENUINE 23234990.
Differential Fill / Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 19256069 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
| GM GENUINE Fits: 2.5L L4 | 19256068 | 🇺🇸 US 🇨🇦 CA | Rear4WD | View on Amazon |
This table covers the Differential Fill drain plugs.
2 Differential Fill / Drain Plug parts for the 2021 GMC Acadia come from GM GENUINE.
Part numbers include GM GENUINE 19256069 and GM GENUINE 19256068.
Differential Oil Slinger
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 23276833 | 🇺🇸 US 🇨🇦 CA | 4WDSLINGER ON TORQUE TUBE | View on Amazon |
This table covers the slingers that keep gear oil off the pinion seal.
This group shows a single part: GM GENUINE 23276833.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 87845955 | 🇺🇸 US 🇨🇦 CA | 4WDGROMMET | View on Amazon |
| TIMKEN Fits: 2.5L L4 | SL260561 | 🇺🇸 US 🇨🇦 CA | Rear | 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 2021 GMC Acadia come from 2 brands — GM GENUINE and TIMKEN.
Listed part numbers: GM GENUINE 87845955 and TIMKEN SL260561.
Differential Ring Gear
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 24298251 | 🇺🇸 US 🇨🇦 CA | FrontFWD | View on Amazon |
This table covers the Differential Ring gears.
One part is listed for the 2021 GMC Acadia — GM GENUINE 24298251.
Differential Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 2.5L L4 | B18240 | 🇺🇸 US 🇨🇦 CA | Material: HNBR (hydrogenated nitrile butadiene rubber) | View on Amazon |
| ELRING Fits: 2.5L L4 | B18360 | 🇺🇸 US 🇨🇦 CA | Material: FPM (fluoride rubber)Radial Shaft Seal Design: BS2 BD | View on Amazon |
This table covers the seals at the Differential. 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.
ELRING supplies both parts for the 2021 GMC Acadia.
Listed part numbers: ELRING B18240 and ELRING B18360.
Drive Shaft Retainer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 23432713 | 🇺🇸 US 🇨🇦 CA | SINGLE USE | View on Amazon |
This table covers the Drive Shaft retainers.
One part is listed for the 2021 GMC Acadia — GM GENUINE 23432713.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 2.5L L4 | VV975 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| ACDELCO Fits: 2.5L L4 | 105050 | 🇺🇸 US | Pentosin CHF-11S33.8 OZ | View on Amazon |
| VALVOLINE Fits: 2.5L L4 | 889785 | 🇺🇸 US 🇨🇦 CA | Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: 2.5L L4 | 882505 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 2.5L L4 | 723856 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil5 Gallon | 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.
5 Gear Oil parts for the 2021 GMC Acadia come from 2 brands — VALVOLINE and ACDELCO. The "Popular" part is VALVOLINE VV975.
This group includes VALVOLINE VV975, ACDELCO 105050 and VALVOLINE 889785 and the remaining parts above.
Retaining Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 24231157 | 🇺🇸 US 🇨🇦 CA | FrontFWD | View on Amazon |
This table covers the Retaining rings.
This group shows a single part: GM GENUINE 24231157.
Torque Tube
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 2.5L L4 | 85686599 | 🇺🇸 US 🇨🇦 CA | 4WDExcept Electronic Twin Clutch Positraction Axle (G99) | View on Amazon |
This table covers the Torque tubes.
One part is listed for the 2021 GMC Acadia — GM GENUINE 85686599.
Transfer Case Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 2.5L L4 | 795390 | 🇺🇸 US 🇨🇦 CA | Housing Bolt | View on Amazon |
This table covers the Transfer Case bolts.
One part is listed for the 2021 GMC Acadia — ELRING 795390.
Transfer Case Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 2.5L L4 | VV975 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Popular Fits: 2.5L L4 | 889785 | 🇺🇸 US 🇨🇦 CA | Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: 2.5L L4 | 882505 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 2.5L L4 | 723856 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil5 Gallon | View on Amazon |
| VALVOLINE Fits: 2.5L L4 | 819195 | 🇺🇸 US 🇨🇦 CA | VPS Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 2.5L L4 | 902146 | 🇺🇸 US 🇨🇦 CA | Extended Protection Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: 2.5L L4 | 904644 | 🇺🇸 US 🇨🇦 CA | VPS Full Synthetic SAE 75W-90 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.
7 Transfer Case Fluid parts for the 2021 GMC Acadia come from VALVOLINE. The "Popular" part is VALVOLINE VV975.
Part numbers include VALVOLINE VV975, VALVOLINE 889785 and VALVOLINE 882505, among others listed above.
Transfer Case Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 2.5L L4 | B18330 | 🇺🇸 US 🇨🇦 CA | 4WDBody code: NB26 | View on Amazon |
| ELRING Fits: 2.5L L4 | B18340 | 🇺🇸 US 🇨🇦 CA | Rear propshaft at transfer caseSLE Model | View on Amazon |
This table covers the gaskets that seal the Transfer Case. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
ELRING supplies both parts for the 2021 GMC Acadia.
This group includes ELRING B18330 and ELRING B18340.
Buying Drivetrain Parts for a 2021 GMC Acadia
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 Transfer Case Fluid .
Frequently Asked Questions
How many drivetrain parts fit the 2021 GMC Acadia?
Our catalog currently lists 62 drivetrain parts for the 2021 GMC Acadia across 24 subcategories and 9 brands, covering all 3 engine options (2.0L L4 Turbocharged, 2.5L L4 and 3.6L V6). Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2021 GMC Acadia 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 GMC Acadia?
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 GMC Acadia 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 GMC Acadia?
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 GMC Acadia
Drivetrain Parts for Other GMC Acadia Years
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