Best Performance Automatic Transmission Lines of 2026

Robert Reyes Avatar
Robert Reyes
Last Updated: Apr 26, 2023

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Performance Automatic Transmission Lines are an essential component for any high-performance vehicle. These transmission lines are designed to handle the increased power and torque demands of high-performance engines. They are made from high-quality materials such as braided stainless steel and offer superior durability, resistance to heat and corrosion, and improved fluid flow. Performance Automatic Transmission Lines are available for a wide range of vehicles and are designed to provide optimal performance and reliability. Whether you are racing or simply looking to upgrade your vehicle's performance, these transmission lines are a must-have.

At a Glance: Our Top Picks

Derale 13032 3/8" Transmission Line Fitting Cover #TOP 1
Derale 13032 3/8" Transmission Line Fitting
ftb score rating icon 9.8
Derale 13031 5/16" Cooler line to 3/8" NPT Hose Barb Universal Transmission Line Fitting, Brass Cover #TOP 2
Derale 13031 5/16" Cooler line to 3/8" NPT Hose Barb Universal Transmission Line Fitting, Brass
ftb score rating icon 9.7
Jiffy-tite 200T1J Transmission Line Kit Cover #TOP 3
Jiffy-tite 200T1J Transmission Line Kit
ftb score rating icon 9.5

Top 4 Performance Automatic Transmission Lines

#TOP 1

Derale 13032 3/8" Transmission Line Fitting

13032
4.15 x 2.80 x 1.40 inches
0.15 pounds
Derale 13032 3/8" Transmission Line Fitting Cover
Derale 13032 3/8" Cooler line to 3/8" NPT Hose Barb Universal Transmission Line Fitting

Derale Transmission Fitting is an affordable and vehicle-specific part. The package dimensions are 8.89 L x 2.54 H x 6.604 W (centimeters), and the product dimensions are 4.15 x 2.8 x 1.4 inches. This fitting is designed to connect a 3/8" cooler line to a 3/8" NPT hose barb. The vehicle-specific fit ensures that it will work perfectly with your transmission system. The compact size of the fitting makes it easy to install and the affordable price makes it a great value for the money.

What We Like
Affordable
Vehicle-specific fit
Compact size
#TOP 2

Derale 13031 5/16" Cooler line to 3/8" NPT Hose Barb Universal Transmission Line Fitting, Brass

13031
4.25 x 2.75 x 1.38 inches
0.15 pounds
Derale 13031 5/16" Cooler line to 3/8" NPT Hose Barb Universal Transmission Line Fitting, Brass Cover
Derale 13031 5/16" Cooler line to 3/8" NPT Hose Barb Universal Transmission Line Fitting, Brass

Derale Transmission Fitting is a vehicle-specific brass fitting that connects your cooler line to the NPT hose barb. It comes in a compact size with dimensions of 1.778 H x 8.89 L x 6.604 W (centimeters), making it easy to install. This product is made in the United States and weighs only 0.15 pounds, which is lightweight and convenient to handle. The fitting is designed to provide a secure connection between the cooler line and the hose barb, ensuring that the transmission fluid flows smoothly without any leaks. This fitting is a must-have for your vehicle if you want to maintain the integrity of your transmission system.

What We Like
Easy to install
Lightweight
Secure connection
#TOP 3

Jiffy-tite 200T1J Transmission Line Kit

200T1J
4.10 x 17.00 x 0.90 inches
0.54 pounds
Jiffy-tite 200T1J Transmission Line Kit Cover
Jiffy-tite 200T1J Black Transmission Line Kit

Jiffy-tite 200T1J Transmission Line Kit is a black kit that simplifies the installation of a transmission cooler. The kit includes a line with braided steel and rubber, which can fit 1/4" NPT male fitting on the transmission side and a socket end on the cooler side. The transmission side has options to fit 1/8" or 1/4" NPT. The cooler side has -6AN male fitting. The kit also includes two adapters to convert 1/4" female NPT to 1/8" male NPT. With these features, Jiffy-tite Line Kit provides convenience and flexibility for users to install a transmission cooler without the need for additional fittings or adapters.

What We Like
Easy installation
Flexible options
No need for additional fittings
#TOP 4

Allstar ALL26700 Universal Transmission Cooler Kit

All-Star
ALL26700
272.40 x 150.00 x 18.00 inches
Allstar ALL26700 Universal Transmission Cooler Kit Cover
Allstar ALL26700 12" Length x 5" High Universal Transmission Cooler Kit with 3/8" Barbed Fitting

The Allstar Transmission Cooler Kit is a universal type cooler that measures 12 inches in length and 5 inches in height. It has a 10,000 GVW racing and comes with 3/8 inch barbed fittings. This cooler reduces the operating temperature of the fluid, extends the life of the transmission and provides better performance. It can be used as a stand-alone cooler or as an auxiliary unit to increase cooling capacity of a stock system. Increased cooling is recommended when using a high stall converter, or if the vehicle is used for towing. The kit includes rubber hose, clamps, and mounting kit for easy installation. With the Allstar Transmission Cooler Kit, you can keep your transmission running smoothly and extend its lifespan.

What We Like
Universal type cooler
Reduces operating temperature
Can be used as a stand-alone or auxiliary unit
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Where is performance automatic located?

Performance Automatic is moving! Please take note that our new address as of August 1st will be 9430 Earley Drive Hagerstown, Maryland 21740.

2. How hot do automatic transmission lines get?

Fluid Life Expectancy vs Temperature The ideal operating temperature of transmission fluid is 175 degrees. Overheating occurs after the temperature surpasses 200 degrees, and the failure rate doubles for every additional 20 degree increase after that.

3. Can you use rubber for transmission lines?

Yes, anyone can use a rubber hose for transmission cooling lines, provided it is designated for transmission cooler lines. Avoid putting it near the exhaust since rubber hoses are frequently prone to higher temperatures. Regular rubber hoses will break down and block the valve body if used.

4. How much pressure is in an automatic transmission line?

The cooler pressure is not published anywhere that I can find but most automatic transmission's have about 4 to 10 PSI. You have to keep in mind the cooler pressure is low because the oil is flowing to lubricate the gears and there is not much resistance in the lines.

Editor's Notes

During our performance automatic transmission line research, we found 4 performance automatic transmission line products and shortlisted 4 quality products. We collected and analyzed 3,476 customer reviews through our big data system to write the performance automatic transmission lines list. We found that most customers choose performance automatic transmission lines with an average price of $20.99.

The performance automatic transmission lines are available for purchase. We have researched hundreds of brands and picked the top brands of performance automatic transmission lines, including Derale, Jiffy-tite, All-Star. The seller of top 1 product has received honest feedback from 504 consumers with an average rating of 4.7.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.