SONNAX SBK-G20 Thrust Bearing Kit 34201E 4L80E 4L85E 1991-UP

( Brand: Sonnax ), ( Manufacturer Part Number: SBK-G20 ), ( Part Type: Bearing ), ( Ipn: 34201e ), ( Manufacturer Warranty: No Warranty ), ( Fitment Type: Direct Replacement ), ( Items Included: Thrust Bearing Kit ), ( Transmission Type: Automatic ), ( Country Of Origin: United States )

Review SONNAX Thrust Bearing Kit Bearings 1991 Up

Introducing the Sonnax SBK-G20 Thrust Bearing Kit, an essential upgrade for 1991 and up models of 4L80E and 4L85E automatic transmissions. This kit is designed to address common issues related to the factory thrust bearings, providing superior durability, performance, and reliability.

The SBK-G20 Thrust Bearing Kit includes a heavy-duty, triple-lip seal design for the input shaft bearing, which minimizes the potential for leaks and contamination. The bearing itself is made of high-strength steel and features a precision-machined surface for optimal fitment and smooth operation.

The output shaft bearing in this kit is also an upgrade from the OEM part. It utilizes a double-lip seal design, which reduces the possibility of oil leaks and prevents contaminants from entering the transmission. The bearing is made of high-quality steel and is precision-machined to ensure proper fitment and function.

The third component in this kit is the intermediate shaft bearing. This bearing, too, is an upgrade over the factory part, with a double-lip seal design to prevent leaks and contamination. It is machined from high-strength steel and features a precision-machined surface for smooth operation and long-lasting performance.

By upgrading to the Sonnax SBK-G20 Thrust Bearing Kit, you can expect improved transmission performance and durability. This kit is an excellent choice for high-performance applications, heavy-duty usage, or for those simply looking to prevent potential transmission issues. Installation is straightforward, and the kit includes all necessary components for a complete replacement.

In summary, the Sonnax SBK-G20 Thrust Bearing Kit is a must-have upgrade for 1991 and up 4L80E and 4L85E automatic transmissions, offering superior sealing, durability, and performance over the factory bearings. Investing in this kit will provide peace of mind and ensure optimal transmission operation for years to come.

The Sonnax SBK-G20 Thrust Bearing Kit (applicable to 4L80E and 4L85E transmissions from 1991 and up) is a popular aftermarket upgrade for those seeking improved transmission performance and durability. Let's examine the potential pros and cons of investing in this product.

1. Enhanced Clutch Performance: Sonnax thrust bearings are designed to provide better engagement and holding power, which can lead to improved clutch performance and more efficient power delivery.

2. Reduced Transmission Noise: The upgraded thrust bearings can help minimize noise, particularly during gear shifts. This can contribute to a smoother driving experience.

3. Increased Transmission Longevity: The Sonnax thrust bearings are made from high-quality materials, which can help extend the life of your transmission.

4. Suitability for High-Performance Applications: For those seeking higher power outputs or racing applications, the Sonnax SBK-G20 Thrust Bearing Kit can help accommodate the additional stresses on the transmission without compromising performance or reliability.

1. Cost: The Sonnax SBK-G20 Thrust Bearing Kit is a premium aftermarket product, and the cost may be a barrier for some buyers.

2. Installation Complexity: Installing the thrust bearings requires some level of mechanical expertise. It may be necessary to remove the transmission from the vehicle, which can be a labor-intensive and time-consuming process.

3. Potential for Unintended Consequences: In some cases, upgrading the thrust bearings without addressing other potential issues within the transmission system could lead to unintended consequences, such as increased wear on other components.

The Sonnax SBK-G20 Thrust Bearing Kit offers significant benefits for those seeking improved transmission performance and durability. However, it comes with a premium price tag and a degree of installation complexity. Careful consideration should be given to the potential benefits and the costs involved, as well as the overall condition of the transmission system. If you decide to proceed with the upgrade, it's essential to follow proper installation procedures and address any other potential issues within the transmission system to ensure optimal performance and longevity.

If you are an enthusiast looking to maximize the performance and longevity of your 4L80E or 4L85E transmission, or if you are planning high-performance applications, the Sonnax SBK-G20 Thrust Bearing Kit is an excellent investment. However, ensure you have the necessary mechanical expertise and resources to undertake the installation process. For those with more modest goals or limited budgets, it may be worth considering other less expensive transmission upgrades or maintenance procedures.

Details:

Sonnax Thrust Bearing Kit SBK-G20 5 Bearings 4L80E,4L85E 1991 -up.

part #: sbkg20 prices

• $49.92-$195.00

specifications gearreb:

• brand: Sonnax
• mpn: Sbk-g20
• part type: Bearing
• ipn: 34201e
• manufacturer warranty: No Warranty
• fitment type: Direct Replacement
• items included: Thrust Bearing Kit
• transmission type: Automatic
• country of origin: United States

general gearreb:

• Car Truck Parts Accessories > Transmission Drivetrain > Transmission Rebuild Kits
• condition: New

payments gearreb:

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

returns gearreb:

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

offer gearreb:

• started: November 5, 2025
• options: Ship-to-home
• quantity: 1
• best offers: True
• sold: 0
• availability: In Stock

shipping gearreb:

• class: Economy
• cost: $0.00
• transit: 5-12 Days
• service: Economy
• type: Fixed

seller gearreb:

• rating: 100.0%
• city: Earlysville, Virginia
• # reviews: 449

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