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Transmission & Drivetrain
Transmission Coolers, Lines, and Fittings

Transmission Coolers, Lines, and Fittings

Transmission coolers are a simple solution to help prolong transmission life. Transmission heat is the prime reason for tranny failure. High performance applications like towing and high torque engines can build heat in the transmission and break down fluids. Transmission fluid works best at lower temperatures. Cool off your Ford, GM, Mopar and other vehicles with an add on transmission cooler. Transmission Coolers can add life to your transmission and prevent failures when you need your vehicle the most!

What Are Transmission Coolers, Lines, and Fittings Common Pros and Cons?

Transmission coolers, lines, and fittings are necessary in order to keep transmission fluid cool in automatic transmission applications. It is important to use the factory cooler size or larger, depending on the vehicle's GVW. Too small of a cooler will cause elevated transmission fluid temperatures and decrease transmission service life.

Which Transmission Coolers, Lines, and Fittings Are Best?

The best transmission cooler is one that closely matches the gross vehicle weight (GVW) of your car or truck or is slightly larger. This helps keep transmission fluid temperature down, lengthening its service life. The gross vehicle weight is the total weight of the vehicle, fully loaded with passengers, fuel, cargo, etc. and is usually identified on a door or doorjamb sticker. The best line fittings and size is determined by the application, transmission, cooler, and radiator sizes.

How Much Do Transmission Coolers, Lines, and Fittings Cost?

Transmission coolers range in price between $30 and $1,000, depending on size, attached cooling fan, and other options. Universal transmission cooler lines range in price between around $10 to over $50 and transmission cooler line fittings ranging in price from under $10 to around $40 each.

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24.76 in (629 mm) (1)

27 in (685.8 mm) (1)

33 in (838.2 mm) (1)

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12.75 in (323.9 mm) (7)

13 in (330.2 mm) (5)

13.5 in (342.9 mm) (2)

13.75 in (349.3 mm) (1)

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14.5 in (368.3 mm) (1)

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5 in (127 mm) (6)

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5.875 in (149.2 mm) (3)

6 in (152.4 mm) (2)

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13 in (330.2 mm) (3)

14.875 in (377.8 mm) (1)

15.125 in (384.2 mm) (1)

18.5 in (469.9 mm) (2)

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1 (4)

2 (6)

4 (5)

6 (9)

7 (3)

8 (9)

9 (1)

10 (9)

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14 (1)

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19 (4)

22 (1)

24 (1)

25 (4)

27 (1)

30 (3)

34 (3)

36 (1)

40 (1)

42 (2)

48 (1)

60 (2)

Core Height

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2 in (50.8 mm) (1)

2.5 in (63.5 mm) (2)

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2.875 in (73.025 mm) (1)

3 in (76.2 mm) (3)

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3.6 in (91.44 mm) (1)

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4 in (101.6 mm) (2)

4.5 in (114.3 mm) (1)

4.875 in (123.825 mm) (1)

5 in (127 mm) (7)

5.75 in (146.05 mm) (3)

5.125 in (130.175 mm) (1)

5.875 in (149.225 mm) (3)

6 in (152.4 mm) (3)

6.5 in (165.1 mm) (1)

6.25 in (158.75 mm) (1)

7 in (177.8 mm) (1)

7.5 in (190.5 mm) (8)

7.75 in (196.85 mm) (3)

7.625 in (193.675 mm) (1)

8 in (203.2 mm) (1)

8.5 in (215.9 mm) (1)

8.75 in (222.25 mm) (3)

9.5 in (241.3 mm) (1)

9.75 in (247.65 mm) (1)

10 in (254 mm) (8)

10.5 in (266.7 mm) (3)

10.25 in (260.35 mm) (1)

11.25 in (285.75 mm) (2)

11.85 in (301 mm) (1)

12.5 in (317.5 mm) (1)

12.625 in (320.675 mm) (1)

15.125 in (384.175 mm) (1)

Inlet Attachment

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Female Threads (16)

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Hose barb (19)

Male Threads (17)

Stock (1)

Outlet Attachment

Drain petcock (3)

Female Threads (13)

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Hose barb (18)

Male Threads (17)

Stock (1)

Overall Thickness

0.75 in (19.1 mm) (11)

0.875 in (22.2 mm) (2)

1 in (25.4 mm) (1)

1.5 in (38.1 mm) (2)

1.25 in (31.8 mm) (2)

1.75 in (44.5 mm) (4)

2 in (50.8 mm) (4)

2.5 in (63.5 mm) (1)

3 in (76.2 mm) (2)

3.5 in (88.9 mm) (2)

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3.625 in (92.1 mm) (1)

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4 in (101.6 mm) (4)

4.313 in (109.6 mm) (1)

5 in (127 mm) (1)

5.25 in (133.4 mm) (1)

5.625 in (142.9 mm) (2)

6.25 in (158.8 mm) (1)

Outlet Size

0.375 in (9.5 mm) (5)

1/2 NPT (4)

1/4 NPT (3)

1/8 NPT (2)

3/8 NPT (1)

9/16-18 (1)

-6 AN (14)

-8 AN (3)

-10 AN (2)

-10 AN O-ring (4)

-12 AN (1)

-16 AN (3)

Core Thickness

0.75 in (19.05 mm) (11)

1 in (25.4 mm) (1)

1.5 in (38.1 mm) (5)

1.25 in (31.75 mm) (3)

1.75 in (44.45 mm) (2)

2 in (50.8 mm) (5)

3 in (76.2 mm) (4)

3.5 in (88.9 mm) (1)

3.75 in (95.25 mm) (1)

4.875 in (123.825 mm) (1)

6.25 in (158.75 mm) (1)

Cooler Construction

Heat sink (3)

Plate (15)

Stacked plate (1)

Tube and fin (15)

Cooler Finish

Black anodized (1)

Black painted (17)

Black powdercoated (1)

Gray painted (3)

Natural (9)

Polished (1)

Silver (1)

Individual Products Group Products

Transmission & Drivetrain Transmission Coolers, Lines, and Fittings

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Derale Oil Cooler Installation Kits and Accessories

$4.19 - $62.99

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JEGS Brass NPT to Hose Barb Fittings

$4.89 - $14.99

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JEGS High Performance Transmission Coolers

$39.99 - $345.92

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JEGS Aluminum NPT to Hose Barb Fittings

$3.31 - $21.59

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JEGS Automatic Transmission Fittings

$9.99 - $16.99

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JEGS GM Automatic Transmission Lines

$15.99 - $197.99

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JEGS AN Male to Hose Barb Adapters

$2.13 - $9.29

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JEGS NiCopp Nickel-Copper Brake/Fuel/Transmission Lines

$5.49 - $100.44

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Derale Adapter Fittings and Accessories

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Vibrant Performance AN Male to NPT Male Adapter Fittings

$3.99 - $33.99

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Trans Go Transmission Cooler Bypass Delete Kits

$9.00 - $13.90

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JEGS Transmission Coolers

$6.29 - $40.79

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JEGS Universal Electric Fan, Oil & Transmission Cooler Mount Kit

$8.99

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$8.99

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Right Stuff Transmission Lines

$19.99 - $96.99

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JEGS Brass Barbed Hose Connector

$5.69 - $10.99

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Derale Electra-Cool Remote Oil/Trans Cooler

$58.79 - $314.99

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JEGS Dual Pass Transmission Coolers

$40.99 - $146.90

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Derale Remote Mount In-Line Thermostats & Accessories

$9.96 - $78.74

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JEGS XHP Transmission Coolers

$38.99 - $73.99

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ICT Billet Transmission Adapter Fittings

$8.99 - $36.99

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Vibrant Performance Extension Fittings

$10.99 - $25.99

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Russell AN Hard-Line Tube Nuts & Tube Sleeves

$2.95 - $49.95

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Derale Compression Fitting Kit

$5.87 - $17.52

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Derale Series 9000 Plate & Fin Transmission Coolers & Kits

$74.33 - $83.99

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JEGS Fuel & Transmission Cooler Tubing & Kits

$25.99 - $76.36

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Derale Series 7000 Oil & Transmission Coolers

$33.90 - $80.44

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Advance Adapters Transmission Cooler Lines

$136.77

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$136.77

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Earl's Transmission Fluid Cooler Fittings

$17.04 - $61.55

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Vibrant Performance Quick Release Coupler Fittings

$89.99 - $167.99

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Vibrant Performance AN Female to AN Male Reducer / Expander Fittings

$9.59 - $30.79

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