INFINITI 3110029X2B Torque Converter

( Manufacturer Part Number: 3110029X2B ), ( Part Type: Torque Converter ), ( Manufacturer Warranty: 1 Month ), ( Oe/oem Part Number: 31100-29x2b, 3y200269 ), ( Vintage Part: No ), ( Universal Fitment: Yes )

Review INFINITI Oem Torque Converter fits QX50 2021–2024

The **Infiniti QX50 Torque Converter (Part Number: 31100-29X2B, Model Years: 2021 2024)** is a precision-engineered hydraulic component designed to deliver seamless power transfer and optimal performance in the CVT (Continuously Variable Transmission) system of the latest generation QX50 SUVs. Manufactured to Infiniti s exacting standards, this torque converter is built with a robust, high-performance clutch assembly featuring a multi-plate friction system that ensures smooth acceleration, efficient fuel economy, and reliable operation under varying driving conditions. The converter incorporates a sophisticated lock-up clutch mechanism, which engages at higher speeds to minimize energy loss and enhance overall transmission efficiency, contributing to a more responsive and dynamic driving experience. Constructed from high-grade materials, including durable aluminum housing and reinforced friction plates, this torque converter is engineered to withstand the demands of daily driving, including aggressive starts, towing, and extended highway travel, while maintaining durability and longevity. Its advanced design also incorporates a precision-balanced turbine and stator assembly, reducing internal friction and heat buildup to extend the life of the transmission fluid and prevent premature wear. Whether navigating city streets, winding mountain roads, or cruising on the highway, this torque converter ensures a quiet, vibration-free operation while maintaining the QX50 s signature blend of comfort and performance. Ideal for both original equipment replacement and aftermarket upgrades, this part adheres to Infiniti s strict quality control protocols, guaranteeing compatibility and performance consistency with the factory specifications of the 2021 2024 model years.

### **Pros and Cons of buying a 2021-2024 Infiniti QX50 with the 3110029X2B Torque Converter**

#### **Pros**

1. **Reliability of the Torque Converter**

- The **3110029X2B** is a factory-spec torque converter for the **Nissan/Renault VQ35DE engine** (used in the QX50 from 2021 2024). As a direct OEM replacement, it ensures proper fitment and performance, reducing the risk of compatibility issues that can arise with aftermarket parts.

- The VQ35DE engine is known for its durability, and the stock torque converter is designed to work seamlessly with its transmission (likely a **CVT or 9-speed automatic**, depending on the model year). A genuine or high-quality aftermarket converter should provide smooth shifting and adequate torque multiplication.

2. **Performance and Driving Experience**

- The stock torque converter is tuned for the VQ35DE s power output ( 272 306 hp, depending on trims). If the vehicle has been well-maintained, the converter should handle acceleration and towing (if applicable) without slipping.

- The QX50 s CVT (in earlier models) or traditional automatic transmission (in later models) benefits from a properly functioning torque converter, ensuring efficient power transfer and responsive shifts.

3. **Cost-Effective Replacement Option**

- Purchasing the **3110029X2B** directly from a reputable supplier (such as **Nissan Parts, RockAuto, or an authorized dealer**) is often cheaper than buying a used or refurbished converter. Prices typically range between **$200 $400**, depending on the seller and condition.

- Avoiding cheap aftermarket converters that may not match the VQ35DE s requirements can prevent long-term transmission issues.

4. **Prevents Transmission Damage**

- A failing torque converter can cause **slipping, rough shifting, overheating, or even transmission failure**. Replacing it proactively (especially if symptoms like delayed engagement or overheating are present) can save thousands in transmission repairs.

- The VQ35DE is prone to **overheating** if the torque converter isn t functioning correctly, so addressing it early is crucial.

5. **Warranty Considerations (If Purchased New)**

- If buying from a **Nissan dealer or authorized supplier**, some torque converters may come with a limited warranty (e.g., 12 24 months). This provides peace of mind in case of defects.

---

#### **Cons**

1. **Potential for Counterfeit or Low-Quality Parts**

- The **3110029X2B** is a common part, making it a target for **counterfeit or substandard replacements**. Buying from **unverified sellers** (e.g., eBay without seller verification, unlicensed online marketplaces) risks receiving a fake or poorly made converter.

- **Solution:** Purchase from **Nissan-authorized dealers, RockAuto, or trusted online retailers** with return policies.

2. **Installation Complexity**

- Replacing a torque converter requires **removing the transmission**, which is a **multi-hour job** (typically 6 10 hours for a DIYer). It involves:

- Draining transmission fluid.

- Removing the transmission from the engine.

- Replacing the converter, fluid pump, and sometimes the input shaft seal.

- **Unless you have mechanical experience**, this is best left to a **transmission shop** (costing **$800 $1,500 ** in labor).

3. **Transmission Fluid Must Be Changed**

- A torque converter replacement **requires a full transmission fluid flush** to remove old fluid and contaminants. Neglecting this can lead to **slipping or premature wear** of the new converter.

- **Cost:** $100 $200 for fluid and filters.

4. **VQ35DE-Specific Weaknesses**

- **Overheating** (especially in stop-and-go traffic or heavy loads).

- **Oil leaks** (valve cover gasket, oil pan gasket).

- **Timing chain stretch** (if not maintained properly).

- If these issues aren t addressed, they can **reduce the lifespan of the torque converter** even with a proper replacement.

5. **CVT vs. Traditional Automatic Differences**

- **2021 2022 QX50 models** (in some markets) used a **CVT**, while **2023 2024 models** (in others) switched to a **9-speed automatic**. The **3110029X2B** is designed for the **CVT**, but if your QX50 has a traditional automatic, ensure you have the correct converter (some VQ35DE applications use a different part number).

- **Solution:** Verify your **transmission type** before purchasing.

6. **Potential for Hidden Transmission Issues**

- If the **transmission itself is failing** (e.g., worn clutches, solenoid issues), replacing just the torque converter may provide **temporary relief but not a permanent fix**. A **full transmission rebuild or replacement** may be needed later.

---

### **Conclusion**

- You **suspect a failing converter** (slipping, overheating, delayed engagement).

- You **plan to replace it proactively** before it causes transmission damage.

- You **source it from a reputable supplier** to avoid counterfeit parts.

- You **address related issues** (fluid changes, engine maintenance) to maximize its lifespan.

- **High installation cost** if done professionally.

- **Complexity of the job** if attempting DIY.

- **Risk of counterfeit parts** if buying from untrusted sources.

- **Underlying transmission or engine issues** that may still need attention.

---

### **Recommendation**

1. **Diagnose First**

- **Slipping under acceleration** (common sign of a bad converter).

- **Overheating transmission fluid** (check fluid color burnt smell/brown color indicates overheating).

- **Delayed engagement** (when pressing the gas, the car doesn t immediately respond).

- Use an **OBD2 scanner** to check for **transmission-related trouble codes** (e.g., P0740 P0743 for torque converter clutch issues).

2. **Buy from a Trusted Source**

- **Nissan Dealers** (most reliable, but expensive).

- **RockAuto, Amazon (with seller reviews), or eBay (verified sellers only)**.

- Avoid **unknown sellers** offering prices significantly lower than market average.

3. **Consider Professional Installation**

- Unless you re **highly experienced with transmissions**, have a **trusted mechanic** perform the replacement. A **transmission specialist** will also:

- Inspect the **transmission for internal damage**.

- Perform a **full fluid flush**.

- Check for **related issues** (seals, solenoids, etc.).

4. **Maintain the Transmission**

- **Change transmission fluid every 30,000 60,000 miles** (CVT fluid every 30K).

- **Monitor for overheating** (avoid short trips, use transmission cooler if towing).

- **Check for leaks** (oil pan, valve cover, seals).

5. **Alternative Options**

- **Rebuilding the transmission** ( $1,500 $3,000) if internal components are worn.

- **Replacing the entire transmission** ( $3,500 $5,000) if it s severely damaged.

- **Using a high-quality aftermarket converter** (e.g., **Haynes, ACDelco, or GMB**) if you trust the brand.

### **Final Verdict**

You have **symptoms of a failing converter** and need a **direct OEM replacement**.

You **source it from a trusted supplier** to avoid fakes.

You **budget for professional installation** or have the **skills for DIY**.

You **suspect deeper transmission issues** without diagnosing first.

You **can t afford proper installation/maintenance**.

You **find a better deal on a rebuilt transmission** instead of just the converter.

- **Get a professional diagnosis** before purchasing.

- **Replace the converter ASAP** if it s the root cause of transmission problems.

- **Maintain the transmission** to ensure the new converter lasts as long as possible.

This will **extend the life of your QX50 s transmission** and **save you from costly repairs down

Details:

2024 INFINITI QX50 Autograph, Luce, Pure, Sensory, Sport 2.0L L4 - Gas. 2023 INFINITI QX50 Autograph, Luce, Pure, Sensory, Sport 2.0L L4 - Gas. 2022 INFINITI QX50 Autograph, Essential, Luce, Pure, Sensory 2.0L L4 - Gas. Car info: Infiniti QX50 Pure 2024.

Message or call us for pricing and availability. Main: Parts taken from No Water Flood.

part #: 3110029x2b prices

• $674.12-$819.85

specifications torquconv:

• for models: Qx50
• for makes: Infiniti
• for years: 2021-2024
• mpn: 3110029x2b
• part type: Torque Converter
• manufacturer warranty: 1 Month
• oe/oem part number: 31100-29x2b, 3y200269
• vintage part: No
• universal fitment: Yes

payments torquconv:

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

shipping torquconv:

• transit: 4-8 Days
• type: Fixed
• carrier: FedEx, UPS, USPS
• cost: $40.00
• service: FedEx Ground / FedEx Home Delivery, UPS Ground, USPS Ground Advantage
• class: Standard

offer torquconv:

• sold: 0
• best offers: True
• availability: In Stock
• started: February 15, 2026
• quantity: 1
• options: Ship-to-home

returns torquconv:

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

seller torquconv:

• rating: 100.0%
• city: Jacksonville, Florida
• # reviews: 1269

general torquconv:

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

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