1. Torque Converters For Sale
  2. sku: 7392421000370871
  3. GENESIS 45100-4J300

GENESIS 45100-4J300 Automatic Transmission Torque Converter 79K

fits model: G80, Awd. year: 2018–2020.

45100-4j300 Genesis 2018-2020 G80 Awd Automatic Transmission Torque Converter 79k Miles Oem

( Brand: Genesis ), ( Manufacturer Part Number: 45100-4J300 ), ( Part Type: Torque Transmission Converter ), ( Vintage Part: No ), ( Fitment Type: Direct Replacement )

Review GENESIS Automatic Transmission Torque Converter 79k Miles Oem fits G80 AWD 2018–2020

The **Genesis G80 (2018 2020) 4J300 8-Speed Automatic Transmission with the 45100-4J300 Torque Converter** represents a pinnacle of automotive engineering, seamlessly blending cutting-edge performance with refined luxury. This sophisticated powertrain system is designed to deliver an exhilarating yet smooth driving experience, making it a standout feature in Genesis flagship sedan. The **8-speed automatic transmission (4J300)** is a masterpiece of modern transmission technology, engineered by ZF Friedrichshafen, a leader in automotive drivetrain innovation. With its advanced **dual-clutch and wet-clutch architecture**, this transmission ensures rapid, precise gear shifts eliminating the traditional lag associated with conventional automatic transmissions. The **8-speed configuration** allows for optimal engine efficiency across a broad RPM range, enhancing fuel economy while maintaining exhilarating acceleration. Whether cruising on the highway or navigating tight city streets, the **4J300** adapts seamlessly, providing a near-instantaneous response to driver inputs through its sophisticated **adaptive shift logic** and **torque converter lock-up control**.

At the heart of this transmission s performance lies the **45100-4J300 Torque Converter**, a high-performance fluid coupling that maximizes power transfer efficiency while minimizing energy loss. Unlike traditional torque converters, this unit incorporates **advanced hydrokinetic technology** to optimize torque multiplication, particularly during low-speed acceleration, ensuring a dynamic yet controlled launch from a standstill. The converter s **variable stator design** adjusts fluid flow dynamically, reducing slippage and improving overall transmission efficiency critical for maintaining the G80 s balance between power and refinement. Additionally, the **torque converter s integrated lock-up clutch** engages at higher speeds, effectively converting the transmission into a direct-drive unit, which further enhances fuel economy and reduces heat buildup.

The **4J300 transmission** is also equipped with **Genesis proprietary shift control algorithms**, which work in tandem with the vehicle s **adaptive cruise control (ACC)** and **driver assistance systems** to anticipate driving conditions. This integration allows for smoother, more intuitive gear changes, whether the G80 is gliding effortlessly through traffic or accelerating aggressively on a winding road. The transmission s **wide ratio spread** ensures that the engine operates within its optimal efficiency zone, reducing strain and extending the lifespan of both the powertrain and the torque converter. Furthermore, the **4J300 s robust construction**, featuring high-strength materials and precision machining, ensures durability and reliability, even under the demanding conditions of daily driving or spirited performance use.

For owners seeking both luxury and performance, the **Genesis G80 s 4J300 transmission with the 45100-4J300 torque converter** delivers an unparalleled driving experience. Whether paired with the **3.3L V6** or the **3.5L V6**, this powertrain combination ensures that every shift is fluid, every acceleration is responsive, and every journey is marked by effortless sophistication. The attention to detail in its design from the **torque converter s hydrodynamic efficiency** to the **transmission s adaptive shift programming** reflects Genesis commitment to blending Korean engineering precision with European-inspired luxury. This transmission is not merely a component; it is the backbone of the G80 s dynamic yet serene character, making it a cornerstone of the vehicle s appeal for discerning drivers who demand both performance and refinement.

### **Pros and Cons of Buying a 2018-2020 Genesis G80 (4.6L V8 AWD, Automatic Transmission with Torque Converter)**

#### **Pros**

1. **Strong Engine and Performance**

The 4.6L V8 engine (from Ford) produces **300 horsepower and 300 lb-ft of torque**, providing solid acceleration and towing capacity (up to **5,000 lbs** when properly equipped). The AWD system enhances traction in various conditions, making it suitable for light off-road or snowy environments.

2. **Spacious and Luxurious Interior**

The G80 offers a **large, well-built cabin** with premium materials, comfortable seating, and good sound insulation. The **third-row seating** (optional) expands passenger capacity, making it practical for families or road trips.

3. **Comfortable Ride and Handling**

The suspension is tuned for a **smooth, relaxed ride**, which is ideal for highway driving. The AWD system also improves stability without being overly sporty, making it a good choice for those who prioritize comfort over sharp handling.

4. **Tech and Infotainment Features**

The **8-inch touchscreen** (later models) integrates with **Apple CarPlay and Android Auto**, offering modern connectivity. The **surround-view camera** (on higher trims) improves parking and maneuverability.

5. **Reliability (Compared to Competitors)**

While the V8 is not as fuel-efficient as modern turbocharged engines, it is **proven and durable** if maintained properly. Genesis has improved its reliability since earlier models, and the G80 benefits from Ford s engine heritage.

6. **Resale Value**

The G80 holds its value reasonably well, especially in the **luxury midsize SUV segment**, where demand remains steady.

7. **Available Safety Features**

Many models come with **standard safety tech** like blind-spot monitoring, rear cross-traffic alert, and adaptive cruise control, enhancing driver confidence.

---

#### **Cons**

1. **Poor Fuel Economy**

The V8 engine **averages around 16-18 MPG combined**, which is **significantly worse** than modern turbocharged or hybrid alternatives. High fuel costs can add up quickly, especially for long commutes.

2. **High Maintenance Costs**

The **V8 requires more frequent oil changes (every 5,000 miles)** and has **more moving parts** than smaller engines, leading to higher long-term maintenance expenses. Timing chain issues (common in Ford s 4.6L engines) can be costly if neglected.

3. **Outdated Tech in Earlier Models**

The **2018-2019 models** had a **smaller, less intuitive infotainment system** compared to newer luxury SUVs. The **2020 model improved slightly**, but it still lags behind competitors like the **Lexus RX or Cadillac XT5** in software and features.

4. **Transmission and Torque Converter Concerns**

The **6-speed automatic transmission** is generally reliable, but some owners report **rough shifting or delayed engagement**, particularly in cold weather. The **torque converter** may also require replacement over time, adding to costs.

5. **Resale Depreciation**

While the G80 holds value better than some luxury SUVs, it still **depreciates faster than premium brands** like Lexus or BMW. If you plan to sell in a few years, you may not recover as much as expected.

6. **Noise and Vibration Issues**

Some owners report **excessive wind noise** at highway speeds and **engine vibrations** through the cabin, which can be distracting over time.

7. **Limited Availability of Parts and Service**

Since Genesis is a **Korean brand**, finding **specialty parts or dealership service** can be harder than for Ford or GM luxury divisions. Independent mechanics may also be less familiar with the vehicle.

---

### **Conclusion**

The **2018-2020 Genesis G80 (4.6L V8 AWD)** is a **solid choice for buyers who prioritize space, comfort, and towing capability** over fuel efficiency and cutting-edge tech. It offers a **luxurious, roomy cabin** and a **reliable V8 engine**, making it a practical option for families or those needing extra passenger or cargo space.

However, **high fuel costs, maintenance expenses, and outdated tech** (especially in earlier models) are significant drawbacks. If you **drive mostly short distances, have a budget for fuel and repairs, and don t mind a slightly dated infotainment system**, this SUV can be a good value. But if **efficiency, modern features, or long-term cost savings** are priorities, you may want to consider alternatives like the **Lexus RX, Cadillac XT5, or even a used BMW X5** (if maintenance is managed properly).

---

### **Recommendation**

- **Buy if:**

- You need **third-row seating** or **towing capacity**.

- You **drive mostly in urban/suburban areas** and don t mind higher fuel costs.

- You **prioritize comfort and space** over the latest tech.

- You **find a well-maintained example** with **service records** (especially for timing chain and transmission health).

- **Avoid if:**

- You **frequently drive long distances** (fuel costs will add up).

- You **prefer modern infotainment** (consider a newer model or a different brand).

- You **want better fuel efficiency** (a hybrid or turbocharged SUV would be smarter).

- You **don t have a budget for potential V8 maintenance issues**.

**Final Verdict:** The G80 is a **good mid-size luxury SUV for the right buyer**, but it s not the most **cost-effective or technologically advanced** option in its class. If you can find a **clean, well-documented example with low mileage**, it can be a rewarding purchase just be prepared for higher running costs.

Details:

BODY TYPE: SEDAN 4-DOOR. TRANSMISSION: 8-SPEED AUTOMATIC A8TR1. COLOR: EXTERIOR MALLORCA BLUE PEARL PS5. MILEAGE: 79K MILES.

part #: 451004j300 price

  • $699.99

specifications torquconv:

  • for models: G80, Awd
  • for years: 2018-2020
  • brand: Genesis
  • mpn: 45100-4j300
  • part type: Torque Transmission Converter
  • vintage part: No
  • fitment type: Direct Replacement

seller torquconv:

  • rating: 99.9%
  • city: Kingsley, Michigan
  • # reviews: 58465

returns torquconv:

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

shipping torquconv:

  • transit: 4-8 Days
  • type: Fixed
  • cost: $50.00
  • service: Economy
  • class: Economy

general torquconv:

  • Car Truck Parts Accessories > Transmission Drivetrain > Torque Converters
  • condition: Used

offer torquconv:

  • best offers: True
  • options: Ship-to-home
  • started: April 23, 2026
  • availability: In Stock
  • quantity: 1
  • sold: 0

payments torquconv:

  • other
  • wallet: Apple-pay
  • credit card: Discover
for models: g80, awd, for years: 2018-2020, part type: torque transmission converter, vintage part: no, fitment type: direct replacement,
category: auto parts > car truck parts accessories > transmission drivetrain > torque converters, sku: 7392421000370871,
Genesis 45100-4J300 Is Similar To:
torquconv logo
1 offer $699.99 USD
  • Used. Offer #1 priced at $699.99 + $50.00 shipping estimate = $749.99* total. 2- CHANGE MY MIND; MILEAGE: 79K MILES.+$50.00 shipping

Copyright © torquconv.com