The 2018 Buick Encore has 29 belt drive parts with verified fitment on this page — 4 part types and 10 brands, covering the 1.4L L4 Turbocharged engine. Each part includes a manufacturer part number and application notes.
On the 2018 Buick Encore, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. 28 parts of the 29 listed are Belt Tensioner (16 parts), Belt (10 parts) and Tensioner Pulley (2 parts). The other 1 part type covers the remaining 1 part.
Every part on this page is matched to the 1.4L L4 Turbocharged — the only engine offered in the 2018 Buick Encore.
The most listed brands for 2018 Buick Encore belt drive parts are ACDELCO (6 parts), GATES (5 parts) and DAYCO (5 parts), plus 7 more brands. Quality grades include Standard Replacement, Economy and Kit.
6 parts on this 2018 Buick Encore page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including ACDELCO 55595700 (Belt) and SKP SK89637 (Belt Tensioner). Click any part number to see every vehicle that part fits.
Belt
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | K050665 | 🇺🇸 US 🇨🇦 CA | Micro-V | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | 55595700 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentSerpentine | View on Amazon |
| CONTINENTAL Popular | 4060545 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi V-BeltSerpentine | View on Amazon |
| ACDELCO | 55587929 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentSerpentine | View on Amazon |
| ACDELCO | 6K544 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| ACDELCO | 5K665 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| CONTINENTAL | 4050565 | 🇺🇸 US 🇨🇦 CA | Multi V-BeltSerpentine | View on Amazon |
| DAYCO | 5050665 | 🇺🇸 US 🇨🇦 CA | Serpentine | View on Amazon |
| DAYCO | 5060545 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Serpentine | View on Amazon |
| GATES | K060544 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Micro-V | View on Amazon |
This table covers the serpentine and accessory belts that drive the front accessories. Typical signs include squeal on cold start, cracks across the ribs, or glazing on the back of the belt. A new belt on a worn tensioner will squeal within weeks — spin the idlers by hand while the belt is off.
10 Belt parts are listed for the 2018 Buick Encore, from ACDELCO, GATES, CONTINENTAL and 1 other brand. ACDELCO 55595700 carries the "Popular" badge.
In the Economy grade, GATES supplies 1 part: the catalog's value-priced group. A representative part number is GATES K050665.
The Standard Replacement section lists 9 options from ACDELCO, CONTINENTAL, DAYCO and 1 other brand — built to original-equipment specification. ACDELCO 55595700 is listed in this group.
Belt Tensioner
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular | SK89637 | 🇺🇸 US 🇨🇦 CA | MFIwithout High Output | View on Amazon |
| CLOYES | B20273 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes Hardware | View on Amazon |
| ULTRA-POWER | 39375 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | 90K38344 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | KitIncludes: Belt, Tensioner | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular | 38344 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MFI | View on Amazon |
| GM GENUINE Popular | 12638689 | 🇺🇸 US 🇨🇦 CA | DI | View on Amazon |
| LITENS Popular | 950260A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MFI | View on Amazon |
| ACDELCO | 39375 | 🇺🇸 US 🇨🇦 CA | Professional / Gold | View on Amazon |
| ACDELCO | 38344 | 🇺🇸 US 🇨🇦 CA | Professional / Gold | View on Amazon |
| CONTINENTAL | 49846 | 🇺🇸 US 🇨🇦 CA | Multi-V | View on Amazon |
| CONTINENTAL | 49804 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi-V or Smooth Pulley | View on Amazon |
| DAYCO | 89744 | 🇺🇸 US 🇨🇦 CA | DI | View on Amazon |
| DAYCO | 89637 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MFI | View on Amazon |
| GATES | 39375 | 🇺🇸 US 🇨🇦 CA | DI | View on Amazon |
| GM GENUINE | 25195388 | 🇺🇸 US 🇨🇦 CA | Contact Surface: Smooth/Backside | View on Amazon |
| LITENS | 999622A | 🇺🇸 US 🇨🇦 CA | DI | View on Amazon |
This table covers the automatic tensioners that hold belt tension. Typical signs include belt flutter, a chirp that returns after a new belt, or a damper that no longer holds the arm. Replace the tensioner with the belt at higher mileage; the labor overlaps almost entirely.
16 Belt Tensioner parts for the 2018 Buick Encore come from 9 brands — GATES, GM GENUINE, LITENS and 6 other brands. The "Popular" part is SKP SK89637.
The Economy section: 3 options from SKP, CLOYES and ULTRA-POWER. SKP SK89637 is listed in this group.
The Kit section lists 1 option from GATES — grouped under the catalog's "Kit" designation — the notes column spells out what sets them apart. GATES 90K38344 is listed in this group.
Standard Replacement: 12 parts, from GATES, GM GENUINE, LITENS and 3 other brands. A representative part number is GATES 38344.
Idler Pulley
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP | SK89052 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SmoothSmooth | View on Amazon |
This table covers the idler pulleys the belt wraps around. Typical signs include a chirp that follows engine speed, or a pulley that feels rough or has play. Replace a noisy idler with the belt — the labor is already paid for.
One part is listed for the 2018 Buick Encore — SKP SK89052.
Tensioner Pulley
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO | 89052 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Smooth | View on Amazon |
| GMB | 4463436 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the pulleys on the tensioner arm. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt.
2 Tensioner Pulley parts for the 2018 Buick Encore come from 2 brands — DAYCO and GMB.
This group includes DAYCO 89052 and GMB 4463436.
Buying Belt Drive Parts for a 2018 Buick Encore
On this vehicle, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys.
- 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 tensioner and idler pulleys with any belt at higher mileage — the labor overlaps almost entirely.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Belt Tensioner and Belt .
Frequently Asked Questions
How many belt drive parts fit the 2018 Buick Encore?
Our catalog currently lists 29 belt drive parts for the 2018 Buick Encore across 4 subcategories and 10 brands, covering the 1.4L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of belt drive problems on a 2018 Buick Encore?
Common symptoms include squealing on cold start, a belt that shows cracking or glazing, or an accessory that slows under load. 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 tensioner and idler pulleys with any belt at higher mileage — the labor overlaps almost entirely.
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 new belt on a worn tensioner will squeal within weeks — check tensioner damping and idler bearings while the belt is off. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 Buick Encore
Belt Drive Parts for Other Buick Encore Years
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