The 2018 Buick Encore has 6 drivetrain parts with verified fitment on this page — 3 part types and 1 brand, covering the 1.4L L4 Turbocharged engine. Each part includes a manufacturer part number and application notes.
On the 2018 Buick Encore, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. All 6 listed parts are Axle / Differential Assembly (3 parts), Axle Bolt (2 parts) and AWD Coupling Oil Pump (1 part).
Every part on this page is matched to the 1.4L L4 Turbocharged — the only engine offered in the 2018 Buick Encore.
Every drivetrain part listed for the 2018 Buick Encore comes from GM GENUINE.
Each part number listed for the 2018 Buick Encore opens a page with every vehicle that part fits.
AWD Coupling Oil Pump
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 42769821 | 🇺🇸 US 🇨🇦 CA | AWD | View on Amazon |
This table covers the AWD Coupling Oil pumps. Typical signs include noise from the pump, no pressure, or fluid that never arrives at the outlet. Prime or fill the pump as the notes require. A dry start is a common way to kill a new unit.
This group shows a single part: GM GENUINE 42769821.
Axle / Differential Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 42655155 | 🇺🇸 US 🇨🇦 CA | RearFWD | View on Amazon |
| GM GENUINE | 42769813 | 🇺🇸 US 🇨🇦 CA | AWD | View on Amazon |
| GM GENUINE | 42655156 | 🇺🇸 US 🇨🇦 CA | RearAWD | View on Amazon |
This table covers the Axle / Differential assemblies.
GM GENUINE supplies the 3 Axle / Differential Assembly parts for the 2018 Buick Encore.
Listed part numbers: GM GENUINE 42655155, GM GENUINE 42769813 and GM GENUINE 42655156.
Axle Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 11589351 | 🇺🇸 US 🇨🇦 CA | RearSingle Use | View on Amazon |
| GM GENUINE | 11588737 | 🇺🇸 US 🇨🇦 CA | RearAWD | View on Amazon |
This table covers the Axle bolts.
2 Axle Bolt parts for the 2018 Buick Encore come from GM GENUINE.
Part numbers include GM GENUINE 11589351 and GM GENUINE 11588737.
Buying Drivetrain Parts for a 2018 Buick Encore
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Confirm you have the 1.4L L4 Turbocharged engine — every part on this page is matched to it.
- 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: Axle / Differential Assembly and Axle Bolt .
Frequently Asked Questions
How many drivetrain parts fit the 2018 Buick Encore?
Our catalog currently lists 6 drivetrain parts for the 2018 Buick Encore across 3 subcategories and 1 brand, covering the 1.4L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 2018 Buick Encore?
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 2018 Buick Encore 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 2018 Buick Encore?
Every part on this page is matched to the 1.4L L4 Turbocharged engine. 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 2018 Buick Encore
Drivetrain Parts for Other Buick Encore 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.