This page lists 82 belt drive parts for the 2011 Kia Optima, across 5 part types, covering all 3 engine options (2.0L L4 Turbocharged, 2.4L L4 and 2.4L L4 ELECTRIC/GAS). Every part shows its brand, manufacturer part number and fitment notes.
The belt drive system on the 2011 Kia Optima spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys. The largest groups are Belt Tensioner (29 parts), Belt (26 parts) and Idler Pulley (22 parts). The other 2 part types cover the remaining 5 parts.
The 2011 Kia Optima was sold with 3 engines. 3 parts fit every engine; the other 79 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2011 Kia Optima belt drive parts are DAYCO (18 parts), GATES (12 parts) and CONTINENTAL (12 parts), plus 14 more brands. Quality grades include Standard Replacement, Economy and Kit.
18 parts on this 2011 Kia Optima page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including GATES K060837 (Belt) and CONTINENTAL 49428 (Belt Tensioner). Click any part number to see every vehicle that part fits.
Belt
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES Popular Fits: 2.0L L4 Turbocharged | K060837 | 🇺🇸 US 🇨🇦 CA | Micro-V | View on Amazon |
| CONTINENTAL Fits: 2.4L L4 | 840K6MK | 🇺🇸 US 🇨🇦 CA | Mileage MakerSerpentine | View on Amazon |
| DAYCO Fits: 2.0L L4 Turbocharged | 5060835DR | 🇺🇸 US 🇨🇦 CA | Drive Rite®Serpentine | View on Amazon |
| DAYCO Fits: 2.4L L4 | 5060840DR | 🇺🇸 US 🇨🇦 CA | Drive Rite®Serpentine | View on Amazon |
| FVP Fits: 2.0L L4 Turbocharged | 835K6 | 🇺🇸 US 🇨🇦 CA | Multi V-BeltSerpentine | View on Amazon |
| FVP Fits: 2.4L L4 | 840K6 | 🇺🇸 US 🇨🇦 CA | Multi V-BeltSerpentine | View on Amazon |
| GATES Fits: 2.4L L4 | K060840 | 🇺🇸 US 🇨🇦 CA | Micro-V | View on Amazon |
| ROADMAX Fits: 2.0L L4 Turbocharged | 6K837AP | 🇺🇸 US 🇨🇦 CA | V-RibbedSerpentine | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 2.0L L4 Turbocharged | 6K837 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| BANDO Popular Fits: 2.4L L4 | 6PK2135 | 🇺🇸 US 🇨🇦 CA | Rib Quantity: 6Inch Number: 841K6 | View on Amazon |
| DAYCO Popular Fits: 2.4L L4 | 5060840 | 🇺🇸 US 🇨🇦 CA | Serpentine | View on Amazon |
| ACDELCO Fits: 2.4L L4 | 6K840 | 🇺🇸 US 🇨🇦 CA | Professional / GoldSerpentine | View on Amazon |
| BANDO Fits: 2.0L L4 Turbocharged | 6PK2125 | 🇺🇸 US 🇨🇦 CA | Rib Quantity: 6Inch Number: 837K6 | View on Amazon |
| BANDO Fits: 2.4L L4 | 6PK2130 | 🇺🇸 US 🇨🇦 CA | Rib Quantity: 6Inch Number: 840K6 | View on Amazon |
| CONTINENTAL Fits: 2.0L L4 Turbocharged | 4060837 | 🇺🇸 US 🇨🇦 CA | Multi V-BeltSerpentine | View on Amazon |
| CONTINENTAL Fits: 2.0L L4 Turbocharged | 6PK2125 | 🇺🇸 US 🇨🇦 CA | Metric LineSerpentine | View on Amazon |
| CONTINENTAL Fits: 2.4L L4 | 4060840 | 🇺🇸 US 🇨🇦 CA | Multi V-BeltSerpentine | View on Amazon |
| DAYCO Fits: 2.0L L4 Turbocharged | 5060835 | 🇺🇸 US 🇨🇦 CA | Serpentine | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BANDO Popular Fits: 2.4L L4 ELECTRIC/GAS | 7PK970 | 🇺🇸 US | Rib Quantity: 7 | View on Amazon |
| CONTINENTAL Popular Fits: 2.4L L4 ELECTRIC/GAS | 4070381F | 🇺🇸 US | Multi V-Belt Reinforced BeltSerpentine | View on Amazon |
| CONTINENTAL Fits: 2.4L L4 ELECTRIC/GAS | 4030310S | 🇺🇸 US | Multi V-Belt Stretch Belt | View on Amazon |
| DAYCO Fits: 2.4L L4 ELECTRIC/GAS | 3PK784EE | 🇺🇸 US | ELA® Stretch BeltSerpentine | View on Amazon |
| DAYCO Fits: 2.4L L4 ELECTRIC/GAS | A070382 | 🇺🇸 US | Serpentine | View on Amazon |
| GATES Fits: 2.4L L4 ELECTRIC/GAS | K070381EMD | 🇺🇸 US | E-Start Micro-V | View on Amazon |
| GATES Fits: 2.4L L4 ELECTRIC/GAS | K030308SF | 🇺🇸 US | Premium OE Stretch Fit Micro-V BeltRequires Installation Tool | View on Amazon |
| GATES Fits: 2.4L L4 ELECTRIC/GAS | K070381EST | 🇺🇸 US | E-Start 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.
26 Belt parts are listed for the 2011 Kia Optima, from CONTINENTAL, DAYCO, GATES and 4 other brands. GATES K060837 carries the "Popular" badge. Economy and Standard Replacement are all represented, and Standard Replacement alone accounts for 10 parts.
Belt Removal / Installation Tool
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Fits: 2.4L L4 ELECTRIC/GAS | 93875 | 🇺🇸 US 🇨🇦 CA | For Water Pump Belt | View on Amazon |
This table covers the Belt Removal / Installation tools. This is a service tool, not a wear part — match the application in the notes.
This group shows a single part: DAYCO 93875.
Belt Tensioner
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CLOYES Fits: all 2011 Optima engines | B20040 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DORMAN Fits: 2.0L L4 Turbocharged, 2.4L L4 | 419327 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: 2.0L L4 Turbocharged, 2.4L L4 | SK89618 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 2.4L L4 | ACK060840 | 🇺🇸 US 🇨🇦 CA | Professional / GoldKit | View on Amazon |
| CLOYES Fits: 2.4L L4 | B40041 | 🇺🇸 US 🇨🇦 CA | Kit | View on Amazon |
| CONTINENTAL Fits: 2.0L L4 Turbocharged | K49428B | 🇺🇸 US 🇨🇦 CA | Includes Poly-V, Tensioner Assembly and Tensioner PulleyKit | View on Amazon |
| CONTINENTAL Fits: 2.4L L4 | K49428 | 🇺🇸 US 🇨🇦 CA | Includes Poly-V, Tensioner Assembly and Idler PulleysKit | View on Amazon |
| DAYCO Fits: 2.0L L4 Turbocharged | 5060835K1 | 🇺🇸 US 🇨🇦 CA | KitIncludes: Serpentine Belt, 2 Pulleys, and Tensioner | View on Amazon |
| DAYCO Fits: 2.0L L4 Turbocharged | KIT431BCK | 🇺🇸 US 🇨🇦 CA | Kit | View on Amazon |
| DAYCO Fits: 2.4L L4 | 5060840K3 | 🇺🇸 US 🇨🇦 CA | KitIncludes: Serpentine Belt, 2 Pulleys, and Tensioner | View on Amazon |
| DAYCO Fits: 2.4L L4 | KIT438BCK | 🇺🇸 US 🇨🇦 CA | Kit | View on Amazon |
| GATES Fits: 2.0L L4 Turbocharged | 90K39071B | 🇺🇸 US 🇨🇦 CA | KitIncludes: Belt, Tensioner, 2 Idlers | View on Amazon |
| GATES Fits: 2.4L L4 | 90K39071 | 🇺🇸 US 🇨🇦 CA | KitIncludes: Belt, Tensioner, 2 Idlers | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Popular Fits: 2.0L L4 Turbocharged, 2.4L L4 | 49428 | 🇺🇸 US 🇨🇦 CA | Multi-V or Smooth Pulley | View on Amazon |
| DAYCO Popular Fits: 2.0L L4 Turbocharged, 2.4L L4 | 89618 | 🇺🇸 US 🇨🇦 CA | Pulley 1 Diameter: 65 mm | View on Amazon |
| GATES Popular Fits: 2.0L L4 Turbocharged, 2.4L L4 | 39071 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GATES Popular Fits: 2.4L L4 ELECTRIC/GAS | 38780 | 🇺🇸 US | Alternator - Left Side | View on Amazon |
| LITENS Popular Fits: 2.0L L4 Turbocharged, 2.4L L4 | 999220A | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| LITENS Popular Fits: 2.4L L4 ELECTRIC/GAS | 999693A | 🇺🇸 US | OuterOE# 25281-2G663 (Clockwise arrow On part) | View on Amazon |
| ACDELCO Fits: 2.0L L4 Turbocharged, 2.4L L4 | 39071 | 🇺🇸 US 🇨🇦 CA | Professional / Gold | View on Amazon |
| ACKOJA Fits: 2.0L L4 Turbocharged, 2.4L L4 | A529704 | 🇺🇸 US 🇨🇦 CA | with OE No. 252822G000 | View on Amazon |
| ACKOJA Fits: all 2011 Optima engines | A520226 | 🇺🇸 US 🇨🇦 CA | with OE No. 2528125000 | View on Amazon |
| DAYCO Fits: 2.4L L4 ELECTRIC/GAS | 89745 | 🇺🇸 US | Right | View on Amazon |
| DAYCO Fits: 2.4L L4 ELECTRIC/GAS | 89746 | 🇺🇸 US | Left | View on Amazon |
| GATES Fits: 2.4L L4 ELECTRIC/GAS | 38781 | 🇺🇸 US | Alternator Side | View on Amazon |
| HYUNDAI Fits: all 2011 Optima engines | 2528125000 | 🇺🇸 US 🇨🇦 CA | To 09/22/2014 | View on Amazon |
| HYUNDAI Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 252812G663 | 🇺🇸 US 🇨🇦 CA | Outer | View on Amazon |
| INA Fits: 2.0L L4 Turbocharged, 2.4L L4 | FT40430 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| LITENS Fits: 2.4L L4 ELECTRIC/GAS | 999692A | 🇺🇸 US | InnerOE# 25281-2G652 / 25281-2G653 (Counterclockwise arrow On part) | 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.
29 Belt Tensioner parts for the 2011 Kia Optima come from 11 brands — DAYCO, GATES, CONTINENTAL and 8 other brands. The "Popular" part is CONTINENTAL 49428. They are grouped as Economy, Kit and Standard Replacement, with Standard Replacement the largest group at 16 parts from DAYCO, GATES, LITENS and 5 other brands.
Idler Pulley
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 2.4L L4 ELECTRIC/GAS, 2.4L L4 | 419699 | 🇺🇸 US 🇨🇦 CA | Smooth | View on Amazon |
| SKP Popular Fits: 2.4L L4 | SK89133 | 🇺🇸 US 🇨🇦 CA | Smooth | View on Amazon |
| SKP Popular Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | SK36307 | 🇺🇸 US 🇨🇦 CA | Smooth | View on Amazon |
| SKP Fits: 2.4L L4 | SK36443 | 🇺🇸 US 🇨🇦 CA | Grooved | View on Amazon |
| ÜRO PARTS Fits: 2.4L L4 | 11287549557 | 🇺🇸 US 🇨🇦 CA | Lower | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Popular Fits: 2.4L L4 | 89133 | 🇺🇸 US 🇨🇦 CA | Smooth | View on Amazon |
| GATES Popular Fits: 2.4L L4 | 36307 | 🇺🇸 US 🇨🇦 CA | Smooth | View on Amazon |
| LITENS Popular Fits: 2.4L L4 | 900540A | 🇺🇸 US 🇨🇦 CA | Grooved | View on Amazon |
| ACDELCO Fits: 2.4L L4 | 36443 | 🇺🇸 US 🇨🇦 CA | Professional / GoldGrooved | View on Amazon |
| ACDELCO Fits: 2.4L L4 | 36307 | 🇺🇸 US 🇨🇦 CA | GoldSmooth | View on Amazon |
| CONTINENTAL Fits: 2.4L L4 | 49193 | 🇺🇸 US 🇨🇦 CA | SmoothIncludes Hardware | View on Amazon |
| CONTINENTAL Fits: 2.4L L4 | 50016 | 🇺🇸 US 🇨🇦 CA | GroovedGrooved, Includes Hardware | View on Amazon |
| DAYCO Fits: 2.4L L4 | 89095 | 🇺🇸 US 🇨🇦 CA | Grooved | View on Amazon |
| DAYCO Fits: 2.4L L4 | 89577 | 🇺🇸 US 🇨🇦 CA | Grooved | View on Amazon |
| FOUR SEASONS Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 45025 | 🇺🇸 US 🇨🇦 CA | Smooth | View on Amazon |
| GATES Fits: 2.4L L4 | 36443 | 🇺🇸 US 🇨🇦 CA | GroovedFlanged | View on Amazon |
| HAYDEN Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | 5025 | 🇺🇸 US 🇨🇦 CA | Smooth | View on Amazon |
| INA Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | FP05561 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| INA Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | FP06201 | 🇺🇸 US 🇨🇦 CA | Smooth | View on Amazon |
| LITENS Fits: 2.4L L4 | 900903A | 🇺🇸 US 🇨🇦 CA | Smooth | View on Amazon |
| LITENS Fits: 2.4L L4 ELECTRIC/GAS | 900712A | 🇺🇸 US | Grooved | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACKOJA Fits: 2.4L L4, 2.4L L4 ELECTRIC/GAS | A520220 | 🇺🇸 US 🇨🇦 CA | with Dual Automatic A/CFrom 12/31/2010 | 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.
22 Idler Pulley parts are listed for the 2011 Kia Optima, from SKP, DAYCO, LITENS and 9 other brands. DORMAN 419699 carries the "Popular" badge.
In the Economy grade, SKP, DORMAN and ÜRO PARTS supply 5 parts: the catalog's value-priced group. A representative part number is DORMAN 419699.
The Standard Replacement section lists 16 options from DAYCO, LITENS, GATES and 5 other brands — built to original-equipment specification. DAYCO 89133 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Tensioner Pulley
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Fits: 2.4L L4 | SK89161 | 🇺🇸 US 🇨🇦 CA | Smooth | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Fits: 2.4L L4 | 50113 | 🇺🇸 US 🇨🇦 CA | Smooth | View on Amazon |
| DAYCO Fits: 2.4L L4 | 89161 | 🇺🇸 US 🇨🇦 CA | Smooth | View on Amazon |
| LITENS Fits: 2.4L L4 | 900713A | 🇺🇸 US 🇨🇦 CA | Smooth | 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.
4 Tensioner Pulley parts for the 2011 Kia Optima come from 4 brands — SKP, CONTINENTAL, DAYCO and 1 other brand.
The Economy section: 1 option from SKP. SKP SK89161 is listed in this group.
Standard Replacement: 3 parts, from CONTINENTAL, DAYCO and LITENS. A representative part number is CONTINENTAL 50113.
This group includes SKP SK89161, CONTINENTAL 50113 and DAYCO 89161 and the remaining parts above.
Buying Belt Drive Parts for a 2011 Kia Optima
On this vehicle, the belt drive system spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys.
- Match the engine first. Some belt drive 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 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 2011 Kia Optima?
Our catalog currently lists 82 belt drive parts for the 2011 Kia Optima across 5 subcategories and 17 brands, covering all 3 engine options (2.0L L4 Turbocharged, 2.4L L4 and 2.4L L4 ELECTRIC/GAS). Each part is matched to the engine(s) it fits.
Do belt drive parts differ between 2011 Kia Optima engines?
Some do. 3 parts fit every engine; the other 79 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 belt drive problems on a 2011 Kia Optima?
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 2011 Kia Optima 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 2011 Kia Optima?
First match the engine — each row shows which engine(s) the part fits. 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 2011 Kia Optima
Belt Drive Parts for Other Kia Optima Years
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