10 Best transmission coolers of 2026

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1

Mishimoto
Mishimoto MMTC-F2D-99SL Transmission Cooler, Compatible with Ford Powerstroke 7.3L, 1999-2003, Silver
Main highlights

Key Features
Direct fit for 1999-2003 Ford 7.3L Powerstroke, ensures a -10 F drop in transmission fluid temperature, and offers a 265% core volume increase.

Ideal Use Cases
Perfect for towing, heavy hauling, and performance driving with 1999-2003 Ford 7.3L Powerstrokes, requiring no modifications for installation.

Customer Reviews
Most praised for its easy installation and significant improvement in transmission cooling, leading to better vehicle performance and longevity.
9.7

Exceptional

Our Rating

9.7
worth the money

8.9
Easy installation
How do we rank?

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2

Mishimoto

Mishimoto MMTC-GMT-99 Transmission Cooler, Compatible with Chevrolet Silverado & Fits GMC Sierra, 1999-2013
9.6

Exceptional

Our Rating
3

Mishimoto

Mishimoto Universal Fit Transmission Cooler, 13-Row Stacked Plate, 22.85" X 7.10” X 1.25” Core
9.4

Excellent

Our Rating
4

PSLER

PSLER Motorcycle Oil Cooler - Motorcycle Radiator for CRF XR KLX 50/110/125/140cc Dirt Bike, Black
9.3

Excellent

Our Rating
5

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
9.0

Excellent

Our Rating

9.7
worth the money

9.7
Temperature control

9.7
materials Quality
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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.
Key specs
- material:aluminum alloy
- special features:Universal fit
- dimensions:15.66 x 7.5 x 0.75 inches
- wattage:N/A
- exterior:N/A
8.8

Very Good

Our Rating

9.5
materials Quality

9.1
worth the money

8.9
Easy installation
7

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)
8.7

Very Good

Our Rating
8

KOROP
LPD47391 40k Transmission Oil Cooler Kit Low Pressure Drop Trans Cooler Compatible with Heavy Duty 40,000 GVW Max Includes Mounting Hardware
Main highlights

Key Features
Durable brazed aluminum, 15X less flow restriction, 30% more cooling for maximum heat transfer, extends vehicle life.

Ideal Use Cases
Perfect for heavy vehicles up to 40,000lbs G.V.W, ensuring optimal performance and longevity.

Customer Praise
Most reviews highlight its exceptional cooling efficiency and durability, leading to significantly improved transmission life.
Key specs
- material:N/A
- special features:N/A
- dimensions:N/A
- Manufacturer:KOROP AUTO PARTS
- Dimensions:24 x 10 x 3 inches
8.6

Very Good

Our Rating

9.3
Easy installation

9.3
worth the money
9

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
- material:N/A
- special features:N/A
- dimensions:N/A
- Manufacturer:Gagsu
- Dimensions:25.25 x 10.5 x 3.25 inches
8.3

Good

Our Rating

9.3
Easy installation

9.3
worth the money

9.1
materials Quality
10

VelaStrides

Transmission Oil Cooler Kit, Aluminium alloy Radiator with 5/16" Tube and Hose Mounting Kit(Black) (4 Pass)

10% Off
8.2

Good

Our Rating

10 Best transmission coolers of 2026

1

Mishimoto MMTC-F2D-99SL Transmission Cooler, Compatible with Ford Powerstroke 7.3L, 1999-2003, Silver

9.7

8.9

How do we rank?

How do we rank?

Analyzing top stores

2

Mishimoto MMTC-GMT-99 Transmission Cooler, Compatible with Chevrolet Silverado & Fits GMC Sierra, 1999-2013

3

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

4

PSLER Motorcycle Oil Cooler - Motorcycle Radiator for CRF XR KLX 50/110/125/140cc Dirt Bike, Black

5

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

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

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

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

9.3

9.3

9

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

10

Transmission Oil Cooler Kit, Aluminium alloy Radiator with 5/16" Tube and Hose Mounting Kit(Black) (4 Pass)

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