10 Best transmission coolers of 2025

Explore top picks

Best Choice

1

Yeasliy

Yeasliy Oil Cooler 87441876 Compatible for New Holland B110B U80B B95B B110C Case 580N 590SN 570NXT 588H 586G 588G
9.8

Exceptional

Our Rating
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Value for Money

2

Mishimoto

Mishimoto Universal Fit Transmission Cooler, 13-Row Stacked Plate, 22.85" X 7.10” X 1.25” Core
9.6

Exceptional

Our Rating
3

Hayden Automotive
Hayden Automotive 678 Universal Rapid-Cool 9.5” x 11” Add-On Transmission Cooler – Not for Direct Replacement of the OE Cooler
Main highlights

Size and Capacity
Size Is 3/4 Inch X 11 Inch X 9-1/2 Inch, Gvwr Up To 24,000 Pounds, Towing Up To 5,000 Pounds

Ideal for Heavy-Duty Vehicles
Pick-Up Trucks And Vans, Class C Motor Homes, Travel Trailers To 24 Feet

Reliability and Cost-Effectiveness
Good quality product, significantly cheaper, trouble-free miles, excellent for maintaining transmission temperature, and extends transmission life
9.3

Excellent

Our Rating

9.7
worth the money

9.7
Temperature control

9.7
materials Quality
4

Gagsu
Gagsu 40k Transmission Oil Cooler lpd47391 Compatible with tru Cool Heavy Duty 40,000 GVW Max - Low Pressure Drop Trans Cooler
Main highlights

Key Features and Benefits
Handles up to 40,000 GVW with advanced low-pressure drop design, includes mounting hardware, and offers advanced cooling protection.

Ideal Use Cases
Perfect for large commercial trucks, trailers, and towing vehicles in need of efficient transmission cooling to enhance reliability and fuel efficiency.

Customer Reviews Highlight
Most praised for its easy installation process and the noticeable improvement in transmission temperature management.
Key specs
- Installation:Includes mounting hardware
- Manufacturer:Gagsu
- Dimensions:25.25 x 10.5 x 3.25 inches
- Compatibility:Heavy-duty vehicles
- Cooling Capacity:40,000 pounds GVW
9.0

Excellent

Our Rating

9.3
Easy installation

9.3
worth the money

9.1
materials Quality
5

Lucky Seven

40k Transmission Oil Cooler LPD47391, Heavy Duty 40,000 GVW Max, Low Pressure Drop, Compatible with Tru-Cool,Includes Mounting Hardware-Ideal for Heavy Vehicles,40,000 GVW transmission cooler (Silver)
8.9

Very Good

Our Rating
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6

EVIL ENERGY
EVIL ENERGY 5/16" Transmission Oil Cooler, 6 Pass Tube and Fin Cooler Kit Universal Aluminium Black…
Main highlights

Key Features
Aluminum alloy cooler enhances ATF cooling, with easy installation. CPE hoses withstand high pressures and extreme temperatures for durability.

Ideal Use Cases
Best for vehicles with 5/16 ID transmission cooler lines, requiring efficient ATF cooling in high-temperature conditions and demanding environments.

Customer Praise
Most reviews highlight its effective cooling performance, durability, and straightforward installation instructions as top benefits.
8.7

Very Good

Our Rating

9.5
materials Quality

9.1
worth the money

8.9
Easy installation
7

Roneeson

Roneeson Automatic Transmission Oil Cooler Assembly for Lexus RX350 2016-2022, RX350L 2018-2020
8.6

Very Good

Our Rating
8

SINTLY

SINTLY LPD47391 Low Pressure Drop 40k Transmission Oil Cooler Kit Compatible with Heavy Duty 40,000 GVW Max with Mounting Hardware
8.5

Good

Our Rating

9.1
Easy installation

8.7
worth the money

8.0
materials Quality
9

BARTOO

BARTOO Universal 5/16" Transmission Oil Cooler Kit, Aluminium alloy 4 Pass Tube and Fin Oil Cooler Kit(Sliver)
8.2

Good

Our Rating
10

A-Premium

A-Premium Transmission Oil Cooler, Universal Aluminium 8 Pass Tube and Fin, Oil Cooler Kit with Hose Mounting Kit
8.1

Good

Our Rating

10 Best transmission coolers of 2025

1

Yeasliy Oil Cooler 87441876 Compatible for New Holland B110B U80B B95B B110C Case 580N 590SN 570NXT 588H 586G 588G

How do we rank?

How do we rank?

Analyzing top stores

2

Mishimoto Universal Fit Transmission Cooler, 13-Row Stacked Plate, 22.85" X 7.10” X 1.25” Core

3

Hayden Automotive 678 Universal Rapid-Cool 9.5” x 11” Add-On Transmission Cooler – Not for Direct Replacement of the OE Cooler

9.7

9.7

9.7

4

Gagsu 40k Transmission Oil Cooler lpd47391 Compatible with tru Cool Heavy Duty 40,000 GVW Max - Low Pressure Drop Trans Cooler

9.3

9.3

9.1

5

40k Transmission Oil Cooler LPD47391, Heavy Duty 40,000 GVW Max, Low Pressure Drop, Compatible with Tru-Cool,Includes Mounting Hardware-Ideal for Heavy Vehicles,40,000 GVW transmission cooler (Silver)

6

EVIL ENERGY 5/16" Transmission Oil Cooler, 6 Pass Tube and Fin Cooler Kit Universal Aluminium Black…

9.5

9.1

8.9

7

Roneeson Automatic Transmission Oil Cooler Assembly for Lexus RX350 2016-2022, RX350L 2018-2020

8

SINTLY LPD47391 Low Pressure Drop 40k Transmission Oil Cooler Kit Compatible with Heavy Duty 40,000 GVW Max with Mounting Hardware

9.1

8.7

8.0

9

BARTOO Universal 5/16" Transmission Oil Cooler Kit, Aluminium alloy 4 Pass Tube and Fin Oil Cooler Kit(Sliver)

10

A-Premium Transmission Oil Cooler, Universal Aluminium 8 Pass Tube and Fin, Oil Cooler Kit with Hose Mounting Kit

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