Best Gm Automatic Transmission Assemblies in 2026
Daisy
Last Updated: Feb 8, 2026
Daisy
Last Updated: Feb 8, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Package Dimensions: 18.034 H x 18.288 L x 19.05 W (centimeters)
Package Weight: 3.25 pounds
Offering the quality, reliability, and durability
Manufactured to OE specification for fit, form, and function
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability
Manufactured to GM OE specification for fit, form, and function
Package Dimensions: 7.874 H x 18.796 L x 18.541 W (centimeters)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Bonbo LLC US | 9.84 | ✅ | ✅ | ✅ |
Perfect Fitment – This 4th Clutch Piston and Lip Seal Installer / Protector Kit is compatible with GM - 4L80-E.
Practical Function – Used to protect inner and outer seals when working on the 4th clutch piston.
Direct Replacement – Alternative to part# T-2926, engineered and tested to meet or exceed original part standards and performance.
Premium Material – Made of top quality solid steel and constructed with a slick black finish, durable and anti corrosion, repeatedly tested to ensure excellent performance and lasting service time.
Satisfaction Guarantee – If you're not satisfied with the kit, simply return it for a full refund in 30 days or get a replacement during 1 year warranty via our customer service.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Ouyanglong | 5.15 | ✅ | ✅ | ✅ |
✔【Ideal Replacement】stL010 Transmission Cooling System Upgrade Kit. It is necessary to regularly check and replace your own transmission cooler, for example, when the load overheats, it can reduce the average operating temperature by as much as 20% and increase the service life of the ATF; it also allows you to perform oil level checks without the need for a preheat cycle.
✔【High quality and special】stL010 Transmission Cooling System Upgrade Kit. Made of high-quality metal materials with high reliability and durability, has a built-in safety bypass that immediately fills the transmission cooler. Brand new product meets or exceeds OEM standards and will be 100% tested before shipping to ensure safety, stability and durability.
✔【Compatible With】stL010Transmission Cooling System Upgrade Kit. For 2014-up Cadillac Chevy GMC Cars and trucks Transmission,2014-up GM Transmission 6L80 6L90,2016-up 8L80 8L90 8L90E 10L90. Please double check the year/make/model in the product description to make sure it fits.
✔【Cost-Effective】stL010 Transmission Cooling System Upgrade Kit. With original equipment quality, direct replacement, perfect fit, stL010 Transmission Cooling System Upgrade Kit has high cost performance for your trip.
✔【OUR WARRANTY】 Package includes 1 Transmission Cooling System Upgrade Kit. We offer a lifetime warranty!!! So, you have no worries. If you have any questions, you can contact us via email. Free exchange and refund policy for a truly worry-free after-sales service.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Acdelco | 3 |
| Gm | 2 |
| Bonbo | 1 |
| Ouyanglong | 1 |
We've carried out a comprehensive analysis of 93 reviews on automatic transmission assemblies, using our selection criteria to identify the best options in the automotive replacement parts. Our findings reveal that most customers typically select automatic transmission assemblies priced around $84.19, with top brands including and dorman and a-premium
Our team of expert editors reviewed these high-quality items and handpicked the top 7 automatic transmission assemblies for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the automotive replacement parts category. These include amazon.com, oregon performance transmission and autoplus auto parts and premiumpartswhosale .
We are dedicated to assisting our users in finding the right assemblies Products based on their needs, saving them considerable time when choosing which automatic transmission assemblies to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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