HYUNDAI KKKBCU113389 Automatic Transmission Transaxle 2.4L 25K

( Manufacturer Part Number: KKKBCU113389 ), ( Part Type: Transmission ), ( Id: A7bc01c1-e31e-4f66-b287-5770fedac291 ), ( Interchange: 400-10825 )

Review HYUNDAI 2.4l Automatic Transmission Transaxle Us Market 25k fits TUCSON FWD 2019–2021

The **Hyundai K00B-CU113389 Tucson 2.4L FWD (2019-2021) Automatic Transaxle** is a precision-engineered, front-wheel-drive transmission designed to deliver seamless power delivery and reliable performance in Hyundai s compact SUV lineup. Built to complement the 2.4L Gamma (GDI) inline-four engine, this transaxle features a **6-speed automatic transmission** with a torque converter, ensuring smooth shifting, efficient fuel economy, and a comfortable driving experience across urban commutes, highway cruising, and light off-road conditions. The compact yet robust design integrates a **planetary gearset** and **hydraulic valve body** for optimized gear ratios, allowing for responsive acceleration while maintaining low-end torque for better towing and hill-climbing capability when paired with the engine s 178 horsepower and 165 lb-ft of torque. The transmission incorporates a **dual-clutch-like shift feel** in some models, providing near-instantaneous downshifts for spirited driving, though it retains the traditional automatic transmission architecture for simplicity and durability.

Constructed with **high-strength steel and aluminum components**, the K00B-CU113389 is engineered for longevity, featuring a **wet sump lubrication system** with a dedicated transmission fluid reservoir to minimize wear and heat buildup. The **torque converter** is tuned for efficiency, reducing parasitic drag at idle while ensuring robust power transfer during acceleration. A **shift-by-wire system** (in later 2020-2021 models) enhances shift precision and reduces mechanical wear, while the **adaptive shift logic** learns driver preferences over time, optimizing gear changes for both fuel economy and performance. This transaxle is also compatible with Hyundai s **Smart Cruise Control** and **Adaptive Front Lighting System**, integrating seamlessly with the vehicle s advanced driver aids for a refined, tech-forward experience.

For maintenance and reliability, the K00B-CU113389 is designed with **easy access points** for fluid changes, filter replacements, and minor servicing, though it is recommended to follow Hyundai s **transmission fluid change intervals** (typically every 60,000 100,000 miles) to prevent sludge buildup and extend the life of the internal components. Common issues in some early 2019 models may include **minor fluid leaks** from the torque converter housing gasket or **delayed engagement** in cold conditions, though these are generally addressable with proper fluid maintenance and occasional adjustments. When paired with the 2.4L engine, this transaxle delivers a **balanced blend of efficiency and capability**, making it ideal for drivers seeking a practical yet capable SUV without the complexity of a CVT or dual-clutch system. Whether navigating city streets, winding roads, or light off-road trails, the K00B-CU113389 ensures a **smooth, predictable, and durable** transmission experience.

### **Pros and Cons of Buying a Hyundai Tucson (2.4L FWD, 2019-2021, Automatic Transmission)**

#### **Pros**

1. **Reliability and Build Quality**

The Hyundai Tucson from 2019 2021 is known for its solid construction and durability, especially in the 2.4L Gamma II engine lineup. Hyundai has improved its reputation for long-term reliability, and this model is generally free from major engine or transmission issues if maintained properly.

2. **Comfortable and Spacious Interior**

The Tucson offers a well-padded cabin with good sound insulation, reducing road noise. The seating is supportive, and the rear legroom is generous, making it a practical choice for families or those who frequently carry passengers.

3. **Smooth Automatic Transmission**

The 6-speed automatic transmission (A6MF1) in these models is generally reliable and provides smooth shifting. Hyundai s transmission tuning has improved over recent years, reducing jerky or delayed shifts compared to older models.

4. **Fuel Efficiency**

- **City:** 18 20 MPG

- **Highway:** 26 28 MPG

This is competitive for its class, though not as efficient as some turbocharged rivals.

5. **Standard Safety Features**

- Forward Collision Warning

- Lane Keeping Assist

- Blind-Spot Collision Warning

- Rear Cross-Traffic Alert

These features enhance safety, though they are not as advanced as some luxury SUVs.

6. **Affordable Maintenance Costs**

Hyundai s warranty coverage (typically 3-year/36,000-mile basic, 5-year/60,000-mile powertrain) is still in effect for many of these models, reducing repair costs. Parts and labor are also cheaper than many competitors.

7. **Good Resale Value**

The Tucson holds its value reasonably well compared to some rivals, especially in the FWD configuration, which appeals to a broader market.

8. **Tech and Convenience Features**

The infotainment system (depending on trim) includes Apple CarPlay, Android Auto, and a 7-inch touchscreen. Higher trims offer features like a 9-inch display, wireless charging, and a premium audio system.

9. **Off-Road Capability (Higher Trims)**

While not a true off-roader, the **SEL, SE, or Limited trims** offer all-wheel drive (AWD) and basic off-road tuning, making them capable on light trails or snow.

10. **Value for Money**

For the price, the Tucson offers a good balance of features, comfort, and practicality, making it a strong contender in the compact SUV segment.

---

#### **Cons**

1. **Engine Power Limitations**

The 2.4L naturally aspirated engine lacks the torque and acceleration of turbocharged rivals (e.g., Honda CR-V, Mazda CX-5). It feels underpowered in passing situations, especially when towing or driving on highways with heavy traffic.

2. **Ride Quality Can Be Firm**

While the Tucson is comfortable, some drivers find the suspension slightly stiff, particularly over rough roads. The lack of adaptive damping (found in higher trims of competitors) means less customization for different driving conditions.

3. **Interior Material Quality Varies by Trim**

Lower trims (SE, SEL) use more plastic and less premium materials, which can feel cheap compared to rivals like the Mazda CX-5 or Subaru Forester. Higher trims improve this, but it s still not as luxurious as a Toyota RAV4 or Honda CR-V.

4. **Infotainment System Lag**

The touchscreen interface can be slow to respond, and the voice recognition is not as intuitive as competitors. Some users report occasional glitches or delayed button presses.

5. **Resale Depreciation**

While the Tucson holds value better than some budget SUVs, it still depreciates faster than premium brands like Toyota or Lexus. If you plan to sell it in a few years, the loss in value may be noticeable.

6. **Limited Off-Road Performance**

Even with AWD, the Tucson is not designed for serious off-roading. It lacks features like locking differentials, higher ground clearance, or all-terrain tires on standard models.

7. **Noise Levels at High Speeds**

Some drivers report increased wind and road noise at highway speeds, though this is common in many SUVs. The cabin is well-insulated, but it s not as quiet as some rivals.

8. **Maintenance Records Matter**

Like any used vehicle, neglect can lead to issues. The 2.4L engine is generally reliable, but failure to change oil regularly or address minor problems (e.g., coolant leaks, transmission fluid changes) can lead to costly repairs.

9. **Limited Customization Options**

Hyundai s trim options are straightforward, and some features (e.g., heated seats, ventilated seats) are only available on higher trims. This can limit personalization compared to brands with more tiered models.

10. **Potential Transmission Issues (Less Common but Possible)**

While rare, some owners report minor transmission hesitation or delayed engagement, particularly in colder climates. Proper fluid changes can mitigate this, but it s worth checking service history.

---

### **Ending Conclusion**

The **2019 2021 Hyundai Tucson (2.4L FWD, automatic)** is a **solid, practical choice** for buyers who prioritize reliability, comfort, and affordability over raw power or luxury. It excels in daily driving, fuel efficiency, and safety, making it ideal for families, commuters, or those who value a no-frills but well-built SUV.

However, it **lacks the punch of turbocharged engines**, has **stiffer ride quality** than some competitors, and **interior materials vary by trim**. If you re looking for a **high-performance or ultra-luxurious SUV**, this may not be the best fit. But for **budget-conscious buyers who want a dependable, spacious SUV**, the Tucson is a **strong and cost-effective option**.

---

### **Recommendation**

- You need a **reliable, fuel-efficient, and affordable** midsize SUV for daily use.

- You prioritize **comfort, safety features, and warranty coverage** over high performance.

- You plan to **keep it for 5 7 years** and maintain it properly (oil changes, fluid top-ups).

- You re okay with **moderate power** and a **slightly firm ride** for the price.

- You need **more power** (consider a turbocharged Honda CR-V or Mazda CX-5).

- You want a **softer, more luxurious ride** (Toyota RAV4, Subaru Forester).

- You plan to **tow frequently** (a V6 or diesel option would be better).

- You re sensitive to **interior material quality** (stick to higher trims like SEL or Limited).

This Tucson is a **great value** for the money, especially if you find one with **full warranty coverage remaining** and **clean maintenance records**. With proper care, it can easily last **150,000 200,000 miles**, making it a **smart long-term purchase** for the right buyer.

Details:

IMPORTANT!: OEM/AFTERMARKET part in good condition may show signs of wear, light scuffs, scratches or other imperfections as a result this being USED PART. If recommended by the manufacturer, replacement of radiator or cooler is required. All computer diagnostic codes must be cleared prior to installing. In certain types of Transmissions the TCM transmission controlling computer is incorporated with valve body which may require to be replaced.

Also fits: HYUNDAI TUCSON 19-21 AT, 2.4L, FWD. It is recommended to fill the transmission with OEM fluids. Search for more parts for HYUNDAI TUCSON. Change over sensors if needed.

Labor and/or towing fees are not warranted. Your detailed response is required and appreciated. The mechanic/installer is required to flush the transmission oil cooling lines, fill with OEM fluids, adjust shiftier mechanisms, replace external switches sensors solenoids, all filters, seals, pan gaskets and re-learn, reset or computers clear codes when installing. Part Stock #.

Replace front seal. Warranty does NOT cover labor, diagnostics. All parts are tested either before or after removal from vehicle. Remove torque converter strap.

Model: HYUNDAI TUCSON. Vehicle Stock #: HT112020. For safety reasons, unloading by hand is NOT ALLOWED. With a Power Flush machine or with an Aerosol Cooler Kit make sure that the transmission cooler lines and radiator are flushed completely to ensure cooling system is flowing.

If needed replace rear seal. Make sure to remove all 'cap-plugs. Condition: 25k. Remove oil pan and replace filter.

Install and index the torque converter properly into front pump. Transmissions: Warranty covers: Transmission case, torque converter included for automatic transmissions only and all internal components. Warranty does NOT cover: Any external wiring, sensors or other parts that can be transferred from your current transmission. Determine a failure cause of your original transmission.

If item is ON SALE, Best Offer option will not apply.

part #: kkkbcu113389 price

• $1539.99

specifications autotransmissionsgo:

• for models: Fwd, Tucson
• for makes: Hyundai
• for years: 2019-2021
• mpn: Kkkbcu113389
• part type: Transmission
• id: A7bc01c1-e31e-4f66-b287-5770fedac291
• interchange: 400-10825

seller autotransmissionsgo:

• # reviews: 3802
• city: Lincoln, Nebraska
• rating: 99.8%

offer autotransmissionsgo:

• quantity: 1
• best offers: True
• started: May 9, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home

payments autotransmissionsgo:

• wallet: Apple-pay
• other
• credit card: Discover

shipping autotransmissionsgo:

• class: Freight
• type: Fixed
• service: Flat Rate Freight
• cost: $300.00

general autotransmissionsgo:

• condition: Used
• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission

returns autotransmissionsgo:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

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